WO2012082213A2 - Conductive open frameworks - Google Patents

Conductive open frameworks Download PDF

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Publication number
WO2012082213A2
WO2012082213A2 PCT/US2011/053423 US2011053423W WO2012082213A2 WO 2012082213 A2 WO2012082213 A2 WO 2012082213A2 US 2011053423 W US2011053423 W US 2011053423W WO 2012082213 A2 WO2012082213 A2 WO 2012082213A2
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Prior art keywords
substituted
hetero
cof
group
alkenyl
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PCT/US2011/053423
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French (fr)
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WO2012082213A3 (en
Inventor
Omar M. Yaghi
Shun Wan
Christian J. Doonan
Bo Wang
Hexiang Deng
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The Regents Of The University Of California
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Priority to KR1020137009686A priority Critical patent/KR20140022362A/en
Application filed by The Regents Of The University Of California filed Critical The Regents Of The University Of California
Priority to US13/876,126 priority patent/US9269473B2/en
Priority to CA2812294A priority patent/CA2812294A1/en
Priority to MX2013003174A priority patent/MX2013003174A/en
Priority to CN2011800569055A priority patent/CN103228663A/en
Priority to RU2013119647/04A priority patent/RU2013119647A/en
Priority to BR112013007140A priority patent/BR112013007140A2/en
Priority to EP11848340.3A priority patent/EP2614067A4/en
Priority to AU2011341641A priority patent/AU2011341641A1/en
Priority to JP2013530415A priority patent/JP2013540760A/en
Publication of WO2012082213A2 publication Critical patent/WO2012082213A2/en
Publication of WO2012082213A3 publication Critical patent/WO2012082213A3/en
Priority to US15/050,136 priority patent/US9978474B2/en

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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F5/00Compounds containing elements of Groups 3 or 13 of the Periodic System
    • C07F5/02Boron compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/26Synthetic macromolecular compounds
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D487/00Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
    • C07D487/22Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains four or more hetero rings
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F5/00Compounds containing elements of Groups 3 or 13 of the Periodic System
    • C07F5/02Boron compounds
    • C07F5/04Esters of boric acids
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00Compounds containing elements of Groups 4 or 14 of the Periodic System
    • C07F7/02Silicon compounds
    • C07F7/08Compounds having one or more C—Si linkages
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/06Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
    • H01B1/12Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances organic substances
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/32Hydrogen storage

Definitions

  • the application relates generally to porous materials that comprise organic frameworks.
  • the application also relates to materials that are useful as conductive materials, to store and separate gas molecules, as well as sensors based upon the
  • organic porous materials are more environmentally friendly than comparable frameworks.
  • Another existing class of porous organic materials includes polyacetylenes containing bulky substituent groups.
  • PTMSP has been . observed since 1983. This material contained a large free volume ( ⁇ 30%), and was able to separate organic compounds from gases or water. The stability of PTMSP is limited by its rapid loss of microporosity due to non-uniform pore structure, exposure to heat, oxygen, radiation, or UV light, or any
  • PIMs intrinsic microporosity
  • PIMs relatively high surface areas (430-850 m 2 /g) .
  • the porosity of PIMs is likely due to their highly rigid and contorted molecular structures which inhibit efficiently packing in space. PIMs, however, display marked hysteresis at low pressures.
  • the disclosure provides electrical or proton conductive open organic covalent frameworks comprised of one or more types of cores and one or more types of linking moieties.
  • a covalent-organic framework [ 0009 ] In a certain embodiment, a covalent-organic framework
  • COF disclosed herein comprises a plurality of cores, wherein each core forms at least one covalent bond to at least one linking moiety; and where the COF comprises a conductive core moiety and/or comprises a conductive linking moiety.
  • a COF disclosed herein contains one or more cores that are substantially planar and which contain one or more substituted or unsubstituted aryls, substituted or unsubstituted aromatic heterocycles , substituted or unsubstituted alkenes, or combinations thereof.
  • a COF disclosed herein contains one or more cores which has a structure selected from the group comprising Formula I, II, III, IV, and V:
  • R 1 -R 59 are independently selected from the group comprising H, D, FG, (C1-C2 0 ) alkyl, substituted (Ci-C 20 ) alkyl , (d-C 20 ) alkenyl, substituted (C1-C20) alkenyl, (C 1 -C 20 ) alkynyl , substituted (Ci- C 20 )alkynyl, hetero- (Ci-C 20 ) alkyl, substituted hetero- (C 1 -C 20 ) alkyl , hetero- (Ci-C 20 ) alkenyl , substituted hetero- (C 1 -C 20 ) alkenyl, hetero- (Ci-C 20 ) alkynyl, substituted hetero- (C 1 -C 20 ) alkynyl, substituted hetero- (C
  • R 9 and R 10 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and
  • R 11 and R 12 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and heterocycle;
  • X 1 -X 13 are independently selected from the group comprising carbon, oxygen, sulfur, silicon, phosphorous, and nitrogen;
  • Y 1 -Y 7 are independently selected from the group comprising H, D, and FG;
  • a 1 -A 21 are independently selected from the group comprising C, N, Si and P;
  • a COF disclosed herein has one or more cores with a structure of Formula I:
  • R 1 -R 12 are independently selected from the group comprising H, D, FG, (Ci-Ce) alkyl, substituted (Ci- C 6 )alkyl, (Ci-C 6 ) alkenyl , substituted (Ci-C 6 ) alkenyl , (C ! -C 6 ) alkynyl , substituted (Ci ⁇
  • R 11 and R 12 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and
  • X x -X 8 are independently selected from the group comprising carbon and nitrogen;
  • Y x -Y 4 are independently selected from the group comprising H, D, and FG;
  • a COF disclosed herein has one or more cores with a structure of Formula lb:
  • R x -R 4 , R 80 -R 95 are independently selected from the group comprising H, D, FG, (Ci-C 6 ) alkyl, substituted (C x - C 6 )alkyl, (Ci ⁇ C 6 )alkenyl, substituted (Ci-C 6 ) alkenyl , (Ci-C 6 ) alkynyl , substituted (C x -C 6 ) alkynyl, hetero- (Ci-C 6 ) alkyl , substituted hetero- (Ci-C 6 ) alkyl , hetero- (C !
  • X 1 -X 4 are independently selected from the group comprising carbon and nitrogen;
  • a COF disclosed herein has one or more cores with a structure of Formula la:
  • R 1 -R 12 , R 60 -R 79 are independently selected from the group comprising H, D, FG, (Ci-C 6 ) alkyl, substituted (Ci- C 6 )alkyl, (C x - C 6 )alkenyl, substituted (Ci-C 6 ) alkenyl , (d-C 6 ) alkynyl, substituted (Ci-C 6 ) alkynyl, hetero- (Cx-Ce) alkyl, substituted hetero- (Ci-C 6 ) alkyl , hetero- (Ci-C 6 ) alkenyl , substituted hetero- (Ci-C 6 ) alkenyl, hetero- (Ci- C 6 ) alkynyl, substituted hetero- (Ci-C 6 ) alkynyl , (Ci-C 6 ) cycloalkyl , substituted (Ci-C 6 ) cycloalkyl, aryl, substituted
  • a COF disclosed herein has one or more cores with a structure of Formula la:
  • R 1 -R 12 , R 60 -R 61 , R 63 -R 66 , R 68 -R 71 , R 73 -R 76 , R 78 -R 79 are H.
  • R 62 , R 67 , R 72 , and R 77 are FG.
  • a COF disclosed herein has one or more cores and/or linking moieties that has a linking cluster that contains at least one heteroatom.
  • a COF disclosed herein has one or more cores and/or linking moieties that has a linking cluster which contains a heteroatom selected from the group comprising B, O, N, S, Si, P, Al, F, CI, Br, and I.
  • a COF disclosed herein has one or more cores and/or linking moieties that has a linking cluster which contains a B, 0 and N.
  • a COF disclosed herein has one or more cores and/or linking moieties that has a linking cluster with the formula wherein x is number from 1 to 2, y is a number from 1 to 8, z is a number from 1 to 8, and R is selected from the group comprising H, D, and FG .
  • a COF disclosed herein contains one or more linking moieties that has an organic-based parent chain which is comprised of one or more substituted or unsubstituted rings; wherein one or more of these rings is further substituted with one or more functional groups, including additional
  • linking moiety contains at least one linking cluster.
  • a COF disclosed herein has one or more linking moieties with a structure selected from the group comprising Formula II, III, IV, V, VII, VIII, IX, and X:
  • a 1 -A 56 are independently selected from the group comprising C, Si, N and P;
  • n is a number from 1 to 8;
  • T is selected from the group comprising an atom that can assume tetrahedral molecular geometry, a tetrahedral group, and a tetrahedral cluster;
  • C 2 o)alkynyl hetero- (C 1 -C 20 ) alkyl, substituted hetero- (Ci-C 20 ) alkyl, hetero- (C 1 -C 20 ) alkenyl , substituted hetero- (C ! -C 2 o) alkenyl , hetero- (C1-C 20 ) alkynyl, substituted hetero- (C 1 -C20) alkynyl, (Ci- C 20 ) cycloalkyl , substituted (C 1 -C 2 0) cycloalkyl , aryl, substituted aryl, heterocycle, and substituted heterocycle;
  • X 9 -X x ⁇ are independently selected from the group comprising carbon, oxygen, sulfur, silicon, phosphorous, and nitrogen;
  • Y 5 -Y 7 are independently selected from the group comprising H, D, and FG;
  • a COF disclosed herein has one or more linking moieties with a structure of Formula IV:
  • a -A are independently either C or N;
  • R 35 -R 44 are independently selected from the group comprising H, D, FG, (Ci-C 6 ) alkyl, substituted (Ci-C 6 ) alkyl , (Ci ⁇ C 6 ) alkenyl , substituted (Ci-C 6 ) alkenyl, (Cj-C 6 ) alkynyl , substituted (Cj- C 6 ) alkynyl, hetero- (C 1 -C5) alkyl , substituted hetero- (C 1 -C5) alkyl , hetero- (C 1 -C5) alkenyl , substituted hetero- (C 1 -C5) alkenyl, hetero- (Ci- C 5 ) alkynyl, substituted hetero- (C 1 -C5) alkynyl , (Ci-C 8 ) cycloalkyl, substituted (Ci-C 8 ) cycloalkyl, aryl, substituted aryl, heterocycle, and substituted heterocycle;
  • a COF disclosed herein has one or more linking moieties with a structure of Formula IV:
  • a 16 -A 21 are C
  • R 36 -R 48 , R"-R" are H;
  • R 35 , R 4 ⁇ R 39 -R 40 are FG.
  • a COF disclosed herein has one or more linking moieties selected from the group comprising:
  • a COF disclosed herein has one or more linking moieties with a structure of Formula VII:
  • a -A are independently either C or N;
  • R 96_ R ioi are nc j e p enc j en tiy selected from the group comprising H, D, FG, (Ci-Cs) alkyl, substituted (Ci-C 6 ) alkyl , (Ci-C 6 ) alkenyl, substituted (Ci-C 6 ) alkenyl , (Ci-C 6 ) alkynyl, substituted (Ci ⁇
  • C 6 alkynyl, hetero- (Ci-C 5 ) alkyl , substituted hetero- (Ci-C 5 ) alkyl , hetero- (Ci-C 5 ) alkenyl, substituted hetero- (Ci ⁇ C 5 ) alkenyl, hetero- (Ci- C 5 ) alkynyl, substituted hetero- (C 1 -C5) alkynyl , (Ci-C B ) cycloalkyl , substituted (Ci-C 8 ) cycloalkyl, aryl, substituted aryl, heterocycle, and substituted heterocycle; and
  • a COF disclosed herein has one or more linking moieties with a structure of Formula VII:
  • a 28 -A 30 are C;
  • R 96 , R 98 -R 99 , R 101 are independently either an H or D;
  • R 97 and R 100 are FG .
  • a COF disclosed herein has one or more linking moieties selected from the group comprising:
  • a COF disclosed herein has one or more linking moieties that has a linking cluster selected from the group comprising acyl halide, halide, ester, carboxylic acid, amine, hydroxyl, ether, and amide.
  • a COF disclosed herein is post-synthesis functionalized to comprise a metal or conductive moiety .
  • a COF disclosed herein has hole conducting mobilities of at least 3.0 cm 2 V “1 s "1 . In yet another embodiment, a COF disclosed herein has hole conducting mobilities of at least 8.0 cnrW 1 .
  • a COF disclosed herein can hold a charge for at least 75 ps.
  • a COF disclosed herein can be used in the manufacture of a flexible display, a semiconductor, a gas storage device, and/or a chemical sensor.
  • a COF can be used as
  • Figure 1A-B shows X-ray analysis of (A) COF-366, and (B)
  • COF-66 with the observed pattern in dark grey, the refined profile in light grey, and the difference plot in medium grey (observed minus refined profiles) .
  • the bottom trace is the calculated PXRD pattern from Materials Studio.
  • Figure 2A-B shows structural representations of (A) COF-
  • Carbon, nitrogen and oxygen are represented as light grey, medium grey and dark grey spheres, respectively.
  • Figure 3A-B shows structural representations of (A) COF-
  • Figure 4A-B shows carrier mobility.
  • A FP TRMC profile of COF-366 (light grey) and COF-66 (dark grey) at 25 °C upon irradiation with a 355 nm pulse laser at a power of 1.4 * 10 16 and 2.1 x 10 16 photons cm “2 , respectively.
  • B Accumulated number of photo induced charge carriers upon 355 nm pulse exposure to COF-366 (dark grey) / COF-66 (light grey) sandwiched by ITO and Al electrodes. Excitation was carried out at the photon density of 9.1 x 10 15 photons cm "2 .
  • Figure 5 shows simulated powder patterns for the staggered (dark grey) and eclipsed models (light grey) for COF-366. Experimental diffraction pattern was overlaid (black) .
  • Figure 6 shows simulated powder patterns for the staggered (dark grey) and eclipsed models (light grey) for COF-66. Experimental diffraction pattern was overlaid (black) .
  • Figure 7 shows solid-state 13 C NMR spectrum for TAPP.
  • Figure 8A-B shows (A) solid-state 13 C NMR spectrum for
  • COF-366 and (B) the COF-366 structure with the carbons labeled to match the 1 C NMR spectrum.
  • Figure 9 shows Solid-state 13 C NMR spectrum for TBPP.
  • Figure 10A-B shows (A) solid-state 1 C NMR spectrum for
  • Figure 11 shows the n B MAS NMR spectrum for TBPP.
  • Figure 12 shows the n B MAS NMR spectrum for COF-66
  • Figure 13 shows an SEM image of COF-366.
  • Figure 14 shows an SEM image of COF-66.
  • Figure 15 shows a TGA trace for an activated sample of
  • Figure 16 shows a TGA trace for an activated sample of
  • Figure 17 shows I-V profiles of a 2 um width Au gap with
  • COF-366 (light grey) and COF-66 (medium grey).
  • Inset Gold electrode used for conductivity measurements.
  • Figure 18 shows Argon adsorption isotherm for COF-366 measured at 87 K.
  • Figure 19 shows Argon adsorption isotherm for COF-66 measured at 87 K.
  • Figure 20 shows Ar adsorption isotherm at 87 K for COF-
  • Figure 21 shows Pore size distribution for COF-366, calculated from a NLDFT fit to the Ar adsorption data for COF-366 in Figure 20.
  • Figure 22 shows Ar adsorption isotherm at 87 K for COF-
  • Figure 23 shows Pore size distribution for COF-66, calculated from a NLDFT fit to the Ar adsorption data for COF-66 in Figure 22.
  • Figure 24A-B shows UV-Vis diffuse reflectance spectra
  • Figure 25 shows the Fluorescence Spectra of (a) COF-366
  • Figure 26 shows FP-TRMC profiles of COF-366 (light grey) and COF-66 (dark grey) at 25 °C on irradiation with a 355-nm pulse laser with different photon densities: 3.6 x 10 16 , 2.7 X 10 16 , 1.8 x 10 16 , 9.1 X 10 15 , 6.4 x 10 15 , 4.6 X 10 15 , and 1.8 x 10 15 photons cm “2 , respectively.
  • the ⁇ values were almost constant when the photon density decreased to the level of 10 15 photons cm "2 .
  • Figure 27 shows Kinetic traces of transient
  • the light grey and dark grey lines are the COF-366 and COF-66, respectively.
  • This figure indicates the new absorption band around 540 and 510 nm (for COF-66 and COF-366, respectively) in the transient spectra is originated by the formation of radical cations of porphyrin units.
  • Figure 30 (a, c) indicates that the transients show good agreement with each other in the shorter time region; therefore, it is possible to obtain the 'pure' conductivity values in this region by subtracting the contribution from the thermal effect.
  • Figure 30 (b, d) shows the deviation in the two transient curves, especially in the longer time region.
  • Figure 31A-C shows current transients observed under the positive bias mode at a variety of electric field strengths in the TOF measurement for (a) COF-66 and (b) COF-366. Excitation was carried out at 355 nm, 9.1 x 10 15 photons cm “2 ; (c) The linear plot of current transients under positive and negative bias modes at 1.1 x 10" V-cm "1 for COF-66.
  • Figure 32 shows dependence of hole drift mobility on applied electric field strength observed in a COF-66 film.
  • Figure 33 shows correlation between the values of electric conductivity estimated by the non-contact microwave conductivity measurement and the conventional four-contacts/Hall effect measurement techniques in inorganic electric semi-conducting or conducting materials of Si (squares), 1O 2 (circles), and Sn(_> 2 (solid circles) with a variety of dopant concentrations.
  • Conductive organic materials are highly valued due to their electronic and optoelectronic properties, low cost, low molecular weight, and the relative ease in which they can be fabricated.
  • the flexibility of the structures has also opened up new applications, such as flexible displays. It is widely believed that strong cofacial interaction between polymer chains allows charge carriers to be easily transported from one chain to another.
  • linear polymers have only confined lateral overlap, and materials with large intermolecular conduction cross-section have so far remained a challenge to fabricate.
  • COFs with structures based on covalently linked porphyrin ring units to give sheets in which the porphyrin ring units are stacked laterally to give an efficient conducting interface.
  • COF-66 and COF-366 two porphyrin ring COFs that were found to have hole conducting mobilities as high as 8.1 and 3.0 cm 2 V _1 s _1 .
  • COF-66, COF-366 and other similar multifunctional conducting COFs combine thermal stability with high charge mobility and pore accessibility.
  • COF-66 and COF-366 were the first COFs to exhibit such properties, and therefore they provide an important step towards the manufacture of plastic electronics and optoelectronics.
  • a crucial characteristic of a semiconductor is the ability to control its electrical conductance.
  • the most important conductive property characterizing the charge transport ability is the charge carrier mobility ( ⁇ ) .
  • Highly crystalline structures that have close interactions between segments are required in order to enhance the charge carrier mobility of organic semiconductors.
  • two-dimensional flat sheet structures provide an ideal morphology to maximize intermolecular interactions. This is especially the case when all the atoms of one sheet are
  • Such assemblages provide a broad path for charge carriers moving from one sheet to another, thereby enabling the eclipsed integration of n-electronic components into a well-defined 2D layered framework.
  • COFs are a class of porous crystalline materials that are constructed by linking secondary building units (SBUs) by covalent bonds to produce predetermined structures. According to reticular chemistry principles, the geometrical features of the SBUs determine the topology of the frameworks. Within the COF class of materials, depending on the degree of connectivity and geometry of the selected organic building units, both 3D structures and 2D layered materials can be prepared. By stacking the organic layers of 2D COFs, materials with attractive properties have been prepared. These materials feature a variety of pore sizes and high surface area. Moreover, these materials were found to adsorb gases when they were tested with H 2 and NH3.
  • SBUs secondary building units
  • interlayer distances in these 2D structures were shorter than would be predicted, which would suggest interactions with the aromatic systems between the layers.
  • a 2D COF with an extended ⁇ -conjugated system that has short interlayer distances could be expected to exhibit electronic interactions between the separated sheets.
  • the disclosure provides extended ⁇ -conjugated 2D COFs that would allow for close packing of the separated sheets so as to allow for electronic interactions between the separated sheets.
  • two novel COFs (COF-366 and COF-66) were fabricated that exhibited the highest charge carrier mobility, among known organic conducting polymers.
  • Covalently linked organic networks differ from existing cross-linked polymers and other polymeric materials whose
  • COF structures contain light elements (B, C, N, and 0) which provide advantages over other similar materials; in that these light element containing materials combine the thermodynamic strength of a covalent bond, as seen in diamond and boron carbides, with the functionality of organic units.
  • Covalent organic frameworks of the disclosure are based, in part, by choosing certain building blocks and by using
  • the disclosure provides novel two- and three-dimensional covalent organic frameworks (3-D COFs)
  • a covalent organic framework refers to a two- or three-dimensional network of covalently bonded cores, wherein the cores are bonded to one another through one or more linking moieties.
  • a COF comprises two or more networks covalently bonded to one another.
  • the networks may be comprised of a single type of core structure.
  • the networks alternatively may be comprised of one or more different type of core structures.
  • the networks may be comprised of a single type of linking moiety.
  • the networks alternatively may be comprised of one or more different types of linking moieties. These COFs are extended in the same sense that polymers are extended.
  • covalent organic network refers collectively to both covalent organic frameworks and to covalent organic polyhedra .
  • Covalent organic polyhedra refers to a non- extended covalent organic network. Polymerization in such polyhedra does not occur usually because of the presence of. capping ligands that inhibit polymerization.
  • Covalent organic polyhedra are covalent organic networks that comprise cores that are linked to each other by one or more linking moieties so that the spatial structure of the network is a polyhedron. Typically, the polyhedra of this variation are 2 or 3 dimensional structures.
  • a "linking cluster” refers to one or more functional groups that are capable of undergoing reactions with functional groups and/or linking clusters found on another structure so as to form one or more covalent bonds connecting the two or more structures together so as to form a larger linked and/or fused structure.
  • This fused structure may be linked and/or fused with additional structures through additional linking clusters so as to ultimately form 2D or 3D covalent organic frameworks.
  • reaction mechanisms may be used in forming the one or more covalent bonds between the two or more structures, including, but not limited to, condensation, radical, unimolecular substitution ( S N 1 ) , bimolecular substitution ( S N 2 ) , nucleophilic aromatic substitution (S N Ar ), unimolecular elimination (El), bimolecular elimination (E2), E1 C B elimination, pericyclic, electrocylic, sigmatropic rearrangements, cycl ' oaddition, and electrophilic aromatic substitution.
  • the linking cluster is
  • alkyl refers to an alkyl group that contains 1 to 30 carbon atoms. Where if there is more than 1 carbon, the carbons may be connected in a linear manner, or alternatively if there are more than 2 carbons then the carbons may also be linked in a branched fashion so that the parent chain contains one or more secondary, tertiary, or quaternary carbons. An alkyl may be substituted or unsubstituted, unless stated otherwise.
  • alkenyl refers to an alkenyl group that contains 1 to 30 carbon atoms. While a Cx.alkenyl can form a double bond to a carbon of a parent chain, an alkenyl group of three or more carbons can contain more than one double bond. It certain instances the alkenyl group will be conjugated, in other cases an alkenyl group will not be conjugated, and yet other cases the alkenyl group may have stretches of conjugation and stretches of nonconjugation .
  • the carbons may be connected in a linear manner, or alternatively if there are more than 3 carbons then the carbons may al'so be linked in a branched fashion so that the parent chain contains one or more secondary, tertiary, or quaternary carbons.
  • An alkenyl may be substituted or unsubstituted, unless stated otherwise.
  • alkynyl refers to an alkynyl group that contains 1 to 30 carbon atoms. While a Ci-alkynyl can form a triple bond to a carbon of a parent chain, an alkynyl group of three or more carbons can contain more than one triple bond. Where if there is more than 1 carbon, the carbons may be connected in a linear manner, or alternatively if there are more than 4 carbons then the carbons may also be linked in a branched fashion so that the parent chain contains one or more secondary, tertiary, or quaternary carbons. An alkynyl may be substituted or unsubstituted, unless stated otherwise.
  • cycloalkyl refers to an alkyl that contains at least 3 carbon atoms but no more than 12 carbon atoms connected so that it forms a ring.
  • a "cycloalkyl” for the purposes of this disclosure encompass from 1 to 7 cycloalkyl rings, wherein when the cycloalkyl is greater than 1 ring, then the cycloalkyl rings are joined so that they are linked, fused, or a combination thereof.
  • a cycloalkyl may be substituted or unsubstituted, or in the case of more than one cycloalkyl ring, one or more rings may be
  • one or more rings may be substituted, or a
  • aryl refers to a conjugated planar ring system with delocalized pi electron clouds that contain only carbon as ring atoms.
  • An "aryl” for the purposes of this disclosure encompass from 1 to 7 aryl rings wherein when the aryl is greater than 1 ring the aryl rings are joined so that they are linked, fused, or a combination thereof.
  • An aryl may be substituted or unsubstituted, or in the case of more than one aryl ring, one or more rings may be unsubstituted, one or more rings may be
  • heterocycie refers to ring structures that contain at least 1 noncarbon ring atom.
  • a “heterocycie” for the purposes of this disclosure encompass from 1 to 7 heterocycie rings wherein when the heterocycie is greater than 1 ring the heterocycie rings are joined so that they are linked, fused, or a combination thereof.
  • a heterocycie may be aromatic or nonaromatic, or in the case of more than one heterocycie ring, one or more rings may be nonaromatic, one or more rings may be aromatic, or a combination thereof.
  • a heterocycie may be substituted or unsubstituted, or in the case of more than one heterocycie ring one or more rings may be unsubstituted, one or more rings may be substituted, or a
  • the noncarbon ring atom is either N, 0, S, Si, Al, B, or P. In case where there is more than one noncarbon ring atom, these noncarbon ring atoms can either be the same element, or combination of different elements, such as N and O.
  • heterocycles include, but are not limited to: a monocyclic heterocycie such as, aziridine, oxirane, thiirane, azetidine, oxetane, thietane, pyrrolidine, pyrroline,
  • homopiperazine 1 , 3-dioxepane, 4 , 7-dihydro-l , 3-dioxepin, and hexamethylene oxide; and polycyclic heterocycles such as, indole, indoline, isoindoline, quinoline, tetrahydroquinoline,
  • isoquinoline tetrahydroisoquinoline, 1, 4-benzodioxan, coumarin, dihydrocoumarin, benzofuran, 2 , 3-dihydrobenzofuran, isobenzofuran, chromene, chroman, isochroman, xanthene, phenoxathiin, thianthrene, indolizine, isoindole, indazole, purine, phthalazine,
  • phenothiazine phenoxazine, 1, 2-benzisoxazole, benzothiophene , benzoxazole, benzthiazole, benzimidazole , benztriazole,
  • heterocycle includes polycyclic heterocycles wherein the ring fusion between two or more rings includes more than one bond common to both rings and more than two atoms common to both rings.
  • bridged heterocycles include quinuclidine, diazabicyclo [ 2.2.1 ] heptane and 7-oxabicyclo [2.2.1] heptane .
  • heterocyclic group refers to a heterocycle that has had one or more hydrogens removed therefrom.
  • heterocyclyl used alone or as a suffix or prefix, refers a monovalent radical derived from a heterocycle by removing one hydrogen therefrom.
  • Heterocyclyl includes, for example, monocyclic heterocyclyls, such as, aziridinyl, oxiranyl, thiiranyl, azetidinyl, oxetanyl, thietanyl, pyrrolidinyl ,
  • heterocyclyl includes aromatic heterocyclyls or heteroaryl, for example, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, thienyl, furyl, furazanyl, pyrrolyl, imidazolyl, thiazolyl, oxazolyl, pyrazolyl, isothiazolyl , isoxazolyl, 1,2,3- triazolyl, tetrazolyl, 1 , 2 , 3-thiadiazolyl , 1 , 2 , 3-oxadiazolyl , 1, 2, 4-triazolyl, 1 , 2 , 4-thiadiazolyl , 1, 2, 4-oxadiazolyl, 1,3,4- triazolyl, 1, 3, -thiadiazolyl, and 1,3,4 oxadiazolyl.
  • aromatic heterocyclyls or heteroaryl for example, pyridinyl, pyrazinyl, pyrimidinyl
  • heterocyclyl encompasses polycyclic heterocyclyls (including both aromatic or non-aromatic), for example, indolyl, indolinyl, isoindolinyl , quinolinyl, tetrahydroquinolinyl , isoquinolinyl , tetrahydroisoquinolinyl , 1 , 4-benzodioxanyl , coumarinyl,
  • phenanthrolinyl phenazinyl, phenothiazinyl , phenoxazinyl , 1,2- benzisoxazolyl , benzothiophenyl , benzoxazolyl , benzthiazolyl , benzimidazolyl , benztriazolyl , thioxanthinyl , carbazolyl,
  • heterocyclyl includes polycyclic heterocyclyls wherein the ring fusion between two or more rings includes more than one bond common to both rings and more than two atoms common to both rings.
  • bridged heterocycles include, but is not limited to, quinuclidinyl , diazabicyclo [ 2.2.1 ] heptyl ; and 7- oxabicyclo [2.2.1] heptyl .
  • hetero-aryl used alone or as a suffix or prefix, refers to a heterocyclyl having aromatic character.
  • heteroaryls include, but is not limited to, pyridine, pyrazine, pyrimidine, pyridazine, thiophene, furan, furazan, pyrrole, imidazole, thiazole, oxazole, pyrazole, isothiazole, isoxazole,
  • hetero- when used as a prefix, such as, hetero- alkyl, hetero-alkenyl , hetero-alkynyl , or hetero-hydrocarbon, for the purpose of this disclosure refers to the specified hydrocarbon having one or more carbon atoms replaced by non-carbon atoms as part of the parent chain. Examples of such noncarbon atoms include, but are not limited to, N, O, S, Si, Al, B, and P. If there is more than one noncarbon atom in the hetero-hydrocarbon chain then this atom may be the same element or may be a combination of different elements, such as N and O.
  • unsubstituted with respect to hydrocarbons, heterocycles, and the like, refers to structures wherein the parent chain contains no substituents .
  • substituted refers to an atom or group of atoms substituted in place of a hydrogen atom.
  • a substituent would include deuterium atoms.
  • hydrocarbons refers to groups of atoms that contain only carbon and hydrogen. Examples of hydrocarbons that can be used in this disclosure include, but are not limited to, alkanes, alkenes, alkynes, aryls, and benzyls.
  • the term "functional group” or " FG” refers to specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules. While the same functional group will undergo the same or similar chemical reaction (s) regardless of the size of the molecule it is a part of, its relative reactivity can be modified by nearby functional groups. The atoms of functional groups are linked to each other and to the rest of the molecule by covalent bonds. Examples of FG that can be used in this disclosure, include, but are not limited to, substituted or unsubstituted alkyls, substituted or
  • heterocycles halos, haloformyls, oxgen containing groups (e.g. hydroxyls, anhydrides, carbonyls, carboxyls, carbonates,
  • oxgen containing groups e.g. hydroxyls, anhydrides, carbonyls, carboxyls, carbonates,
  • carboxylates aldehydes, esters, hydroperoxy, peroxy, ethers, and orthoesters
  • nitrogen-containing groups e.g. carboxamides, amines, imines, imides, azides, azos, cyanates, isocyanates, nitrates, nitriles, isonitriles, nitrosos, nitros, nitrosooxy
  • sulfur-containing groups sulfhydryls, sulfides, disulfides, sulfinyls, sulfos, thiocyanates, isothiocyanates , and
  • carbonothioyls carbonothioyls
  • phosphorous-containing groups e.g. phosphinos, phosphonos, and phosphates
  • silicon-containing groups Si(OH) 3 , Si(SH) 4 , silanes, silyls, and siloxanes
  • boron containing groups e.g. boronic acid, boronic esters, and boronic ethers
  • metal or metalloid-containing groups e.g. Ge(OH) 3 , Ge(SH) 4 , As0 3 H, As0H, As(SH) 3 , Sn(OH) 3 , Sn(CH 3 ) 3 , and Sn(Bu) 3 ).
  • a wavy line intersecting another line in a chemical formula where this line is connected to an atom on one end and nothing on the other end indicates that this atom is covalently bonded to another atom that is present but not being shown.
  • a bond that is represented by a straight line and a dashed line indicates that this bond can be a single covalent bond or alternatively a doubly covalent bond.
  • a “core” refers to an organic compound which can form one or more covalent bonds with a linking moiety through a linking cluster.
  • a core comprises a substantially planar parent chain that is comprised mainly of aryls, heterocylces ,
  • heteroalkenyls , heteroalkynyls or a combination thereof; wherein the parent chain may be unsubstituted or substituted with one or more functional groups, including substituted or unsubstituted hydrocarbons, heterocycles , or a combination thereof; and wherein the core can form one or more covalent bonds with one or more linking clusters of one or more linking moieties.
  • cores are planar conjugated structures that contain from two to eight aryls, aromatic heterocycles, or combination thereof.
  • core stuctures include, but are not limited to, porphyrin, porphyrin analogs, corrinoid, corrinoid analogs, naphthalene, naphthalene analogs, anthracene, anthracene analogs, phenathrene, phenathrene analogs, pyrene, pyrene analogs, linked 2 to 8 aryl rings, linked 2 to 8 aromatic heterocyle rings, fused 2 to 8 aryl and aromatic heterocycle rings, and linked 2 to 8 aryl and aromatic heterocycle rings.
  • a “linking moiety” refers to an organic compound which can form one or more covalent bonds with a core through a linking cluster.
  • a linking moiety comprises a parent chain of a hydrocarbon, hetero-alkane, hetero-alkene, hetero-alkyne, or heterocycles; where this parent chain may be substituted with one or more functional groups, including additional substituted or unsubstituted hydrocarbons, and heterocycles , or a combination thereof; and wherein the linking moiety contains at least one linking cluster.
  • heterocycles, hetero-alkanes , hetero-alkenes, and hetero-alkynes one or more heteroatoms can function as a linking cluster.
  • heteroatoms include, but are not limited to, nitrogen, oxygen, sulfur, boron, phosphorus, silicon or aluminum atoms making up the ring.
  • a heterocycle, hetero-alkane, hetero-alkene , or hetero-alkyne can also be functionalized with one or more linking clusters.
  • a heterocycle, hetero-alkane, hetero-alkene, or hetero-alkyne can also be functionalized with one or more ligands to add or increase denticity of the hetero-based parent chain.
  • one or more of the linking clusters of the hydrocarbon-based linking moiety can arise from functionalizing the hydrocarbon parent chain with one or more functional groups that can then act as a linking cluster.
  • Such groups include, but are not limited to, carboxylic acids, hydroxyls, amines, imines, thiols, phosphines, ketones, aldehydes, halides, cyanos, boronic acid and nitros.
  • portions of a hydrocarbon itself can function as a linking cluster, for example by forming carbenes and carbocations . It is also well known that functional groups that can be linking clusters that are also Lewis bases, have lone pair electrons available and/or can be
  • post framework reactants refers to all known substances that are directly involved in a chemical reaction. Post framework reactants typically are substances, either elemental or compounds, which have not reached the optimum number of electrons in their outer valence levels and/or have not reached the most favorable energetic state due to ring strain, bond length, low bond dissociation energy, and the like. Some examples of post framework reactants include, but are not limited to:
  • each R is independently selected from the group comprising: H, sulfonates, tosylates, azides, triflates, ylides, alkyl, aryl, OH, alkoxy, alkenes, alkynes, phenyl and substitutions of the foregoing, sulfur-containing groups (e.g., thioalkoxy, thionyl chloride) , silicon-containing groups, nitrogen-containing groups (e.g., amides and amines), oxygen-containing groups (e.g., ketones, carbonates, aldehydes, esters, ethers, and anhydrides), halogen, nitro, nitrile, nitrate, nitroso, amino, cyano, ureas, boron- containing groups (e.g., sodium borohydr
  • the disclosure provides covalently linked organic networks of any number of net structures (e.g., frameworks) .
  • the covalently linked organic network comprises a plurality of -cores wherein at least two cores contain one or more linking clusters capable of forming one or more covalent bonds with one or more linking clusters of one or more linking moieties.
  • the cores are linked to- one another by at least one linking moiety.
  • Variations of the covalently linked organic networks can provide surface areas from about 1 to about 20,000 m 2 /g or more, typically about 2000 to about 18,000 m 2 /g, but more commonly about 3,000 to about 6,000 m 2 /g.
  • each core is linked to at least one, typically two, distinct cores through one or more linking moieties.
  • the covalently linked organic networks are COFs that have extended structures.
  • these COFs are crystalline materials that may be either polycrystalline or even single crystals.
  • the cores may be the same throughout the net (i.e., a homogenous net) or may be different or alternating types of cores (i.e., a heterogeneous net). Since the COFs are extended structures, variations may form into analogous nets to the nets found in metallic organic frameworks as described in Reticular Chemistry: Occurrence and Taxonomy of Nets and Grammar for the Design of Frameworks, Acc. Chem. Res. 2005, 38, 176-182. The entire disclosure of this article is hereby incorporated by reference.
  • a COF disclosed herein is generated from cores that have the same structure. In another embodiment, a COF disclosed herein is generated from at least two cores that have a different structure.
  • a COF disclosed herein is generated from one or more cores comprised of fused aryl rings. In a certain embodiment, a COF disclosed herein is generated from one or more cores comprised of fused aromatic heterocycles. In yet a further embodiment, a COF disclosed herein is generated from one or more cores comprised of fused aryl and aromatic heterocycle rings. In another embodiment, a COF disclosed herein is generated from one or more cores that have a porphyrin or porphyrin analog based structure .
  • a COF disclosed herein is generated from one or more cores that have a structure selected
  • R ⁇ R 59 are independently selected from the group comprising H, D, FG, (Ci-C 20 ) alkyl, substituted (C 1 -C 20 )alkyl, (Ci-C 20 ) alkenyl, substituted (C1-C2 0 ) alkenyl, (C 1 -C 20 ) alkynyl, substituted (Ci- C 20 ) alkynyl, hetero- (C 1 -C 20 ) alkyl , substituted hetero- (Ci-C 20 ) alkyl, hetero- (C x -C 2 o) alkenyl, substituted hetero- (Ci-C 20 ) alkenyl, hetero- (C 1 -C 20 ) alkynyl, substituted hetero- (Ci-C 20 ) alkynyl , (Ci ⁇
  • R 7 and R 8 are linked together to form a substituted or ⁇ unsubstituted ring selected from the group comprising cycloalkyl, aryl and heterocycle, wherein R 9 and R 10 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and
  • X ⁇ X 13 are independently selected from the group comprising carbon, oxygen, sulfur, silicon, phosphorous, and nitrogen;
  • Y x -Y 7 are independently selected from the group comprising H, D, and FG;
  • a 1 -A 21 are independently selected from the group comprising C, N, Si or P;
  • a COF disclosed herein is generated from one or more cores that have a structure of Formula I :
  • R 1 -R 12 are independently selected from the group comprising H, D, FG, (Ci-C 6 ) alkyl, substituted (Ci- C 6 )alkyl, (Ci-C 6 ) alkenyl , substituted (Cj-Cg) alkenyl, (0 ⁇ -0 6 ) alkynyl, substituted (Ci ⁇
  • R u and R 12 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and
  • X 1 -X 8 are independently selected from the group comprising carbon or nitrogen;
  • ⁇ 1 - ⁇ " are independently selected from the group comprising H, D, FG;
  • a X may not exceed its maximum valence by binding a Y, or R 1 -R 4 .
  • the covalent organic framework is generated from one or more cores of Formula I that have a structure of Formula la:
  • R 1 -R 12 , R 60 -R 19 are independently selected from the group comprising H, D, FG, (Ci-C 6 ) alkyl , substituted (Ci ⁇ C 6 )alkyl, (Ci- C 6 )alkenyl, substituted (Ci-C 6 ) alkenyl, (d-C 6 ) alkynyl, substituted (Ci-C 6 ) alkynyl, hetero- (Ci-C 6 ) alkyl , substituted hetero- (Ci-C 6 ) alkyl , hetero- (Ci ⁇ C 6 ) alkenyl, substituted hetero- (Ci-C 6 ) alkenyl , hetero- (Ci- C 6 ) alkynyl, substituted hetero- (Ci-C 6 ) alkynyl , (Ci-C 6 ) cycloalkyl, substituted (Ci-C 6 ) cycloalkyl, aryl, substituted aryl
  • the covalent organic framework is generated from one or more cores of Formula la:
  • R 1_ R 12 R 60_ R 61 f R 63_ R 66 ( R 68_ R 71 f R 73_ R 76 f R 78_ r 79 a ⁇ Q H _
  • R 62 , R 67 , R 72 , and R 77 are FG.
  • a COF disclosed herein is generated from one or more cores of Formula I that have a structure of Formula lb:
  • R 1 -R 4 , R 80 -R 95 are independently selected from the group comprising H, D, FG, (Ci-C 6 ) alkyl, substituted (Ci ⁇ C 6 )alkyl, (Ci ⁇ C 6 )alkenyl, substituted (Ci-C 6 ) alkenyl , (Ci-C 6 ) alkynyl , substituted (Ci-C 6 ) alkynyl , hetero- (Ci-C 6 ) alkyl , substituted hetero- (d-C 6 ) alkyl , hetero- (Ci-C 6 ) alkenyl , substituted hetero- (Ci-Ce) alkenyl , hetero- (Ci- C 6 ) alkynyl, substituted hetero- (d-C 6 ) alkynyl, (Ci-C 6 ) cycloalkyl , substituted (C ! -C 6 ) cycloalkyl, aryl, substituted
  • X ⁇ X 4 are independently selected from the group comprising carbon and nitrogen;
  • a core and/or linking moiety disclosed herein comprises a compound having structural Formula (ID :
  • a x -A 9 are independently either C or N;
  • R 13 -R 24 are independently selected from the group comprising H, D, FG, (C x -C 6 ) alkyl, substituted (Ci-C 6 ) alkyl , (Ci-C 6 ) alkenyl , substituted (d-C 6 ) alkenyl, (Ci-C 6 ) alkynyl, substituted (Ci ⁇
  • C 6 alkynyl, hetero- (C 1 -C5) alkyl, substituted hetero- (C 1 -C5) alkyl , hetero- (Ci-C 5 ) alkenyl , substituted hetero- (C 1 -C5) alkenyl, hetero- (Ci- C 5 ) alkynyl, substituted hetero- (C 1 -C5) alkynyl, (Cx-Ce) cycloalkyl, substituted (Ci-C 8 ) cycloalkyl, aryl, substituted aryl, heterocycle, and substituted heterocycle; and
  • a core and/or linking moiety of Formula (II) has the structure:
  • a core and/or linking moiety disclosed herein comprises a compound having structural Formula (III) :
  • a 10 -A 15 are independently either C or N;
  • R 25_ R 34 are i n ⁇ j e p enclen tly selected from the group comprising H, D, FG, (Cx-Ce) alkyl, substituted (Ci-C 6 ) alkyl , (C ! -C 6 ) alkenyl, substituted (Ci-C 6 ) alkenyl , (C !
  • a core and/or linking moiety of Formula (III) has the structure selected from the group comprising:
  • a core and/or linking moiety disclosed herein comprises a compound having structural Formula (IV) :
  • a 16 -A 21 are independently either C or N;
  • R 35 -R' !4 are independently selected from the group comprising H, D, FG, (Ci-C 6 ) alkyl, substituted (Ci-C 6 ) alkyl , (Ci-C 6 ) alkenyl , substituted (Ci-C 6 ) alkenyl, (Cx-Ce) alkynyl, substituted (Ci ⁇
  • C 6 alkynyl, hetero- (Ci-C 5 ) alkyl, substituted hetero- (Ci ⁇ C 5 ) alkyl , hetero- (Ci-C 5 ) alkenyl , substituted hetero- (C 1 -C5) alkenyl , hetero- (Ci- C 5 ) alkynyl, substituted hetero- (C 1 -C 5 ) alkynyl, (Ci-C 8 ) cycloalkyl , substituted (Ci-C e ) cycloalkyl , aryl, substituted aryl, heterocycle, and substituted heterocycle; and
  • a core and/or linking moiety disclosed herein comprises a compound having structural Formula (V) :
  • ⁇ 9 - ⁇ 14 are independently either C, N or P;
  • Y 5 -Y 7 are independently either H, D, or FG;
  • a 22 -A 27 are independently either C or N;
  • R 5 -R 59 are independently selected from the group comprising H, D, FG, (Ci-C 6 ) alkyl, substituted (C ! -C 6 ) alkyl , (Ci-C 6 ) alkenyl , substituted (d-C 6 ) alkenyl, (Ci-Ce) alkynyl, substituted (Ci- C 6 ) alkynyl, hetero- (C 1 -C5) alkyl , substituted hetero- (C 1 -C5) alkyl , hetero- (C 1 -C5) alkenyl , substituted hetero- (C 1 -C5) alkenyl , hetero- (Ci- C 5 ) alkynyl, substituted, hetero- (C 1 -C5) alkynyl, (Ci-C 8 ) cycloalkyl, substituted (Ci-C 8 ) cycloalkyl, aryl, substituted aryl, heterocycle, and substituted heterocycle
  • the linking moiety of the COF comprises an organic-based parent chain comprising alkyl, hetero-alkyl , alkenyl, hetero-alkenyl , alkynyl, hetero-alkynyl , one or more cycloalkyl rings, one or more cycloalkenyl rings, one or more cycloalkynyl rings, one of more aryl rings, one or more heterocycle' rings, or any combination of the preceding groups, including larger ring structures composed of linked and/or fused ring systems of different types of rings; wherein this organic-based parent chain may be further substituted with one or more functional groups, including additional substituted or unsubstituted hydrocarbons and heterocycle groups, or a combination thereof; and wherein the linking moiety contains at least one (e.g. 1, 2, 3, 4, 5, 6,...) linking cluster.
  • the linking moiety of the COF has an organic-based parent chain that is comprised of one or more substituted or unsubstituted rings; wherein one or more of these rings is further substituted with one or more functional groups, including additional substituted or unsubstituted hydrocarbons and heterocycle groups, or a combination thereof; and wherein the linking moiety contains at least one (e.g. 1, 2, 3, 4, 5, 6,%) linking cluster.
  • the linking- moiety of the COF has an organic-based parent chain that is comprised of one or more substituted or unsubstituted rings; wherein one or more of these rings are further substituted with one or more functional groups, including additional substituted or unsubstituted hydrocarbons and heterocycle groups, or a combination thereof; and wherein the linking moiety contains at least one (e.g. 1, 2, 3, 4, 5, 6,...) linking cluster that is either a carboxylic acid, ester, aldehyde, amine, thiol, cyano, nitro, hydroxyl, or heterocycle ring
  • heteroatom such as the N in pyridine.
  • the linking moiety of the COF has an organic-based parent chain that is comprised of one or more substituted or unsubstituted rings; wherein one or more of these rings are further substituted with one or more functional groups, including additional substituted or unsubstituted hydrocarbons and heterocycle groups, or a combination thereof; and wherein the linking moiety contains at least one (e.g. 1, 2, 3, 4, 5, 6,%) linking cluster that is either a carboxylic acid, ester, aldehyde, amine, or hydroxyl.
  • the linking moiety of the COF has an organic-based parent chain that is comprised of one or more substituted or unsubstituted rings; wherein one or more of these rings are further substituted with one or more functional groups, including additional substituted or unsubstituted hydrocarbons and heterocycle groups, or a combination thereof; and wherein the linking moiety contains at least one (e.g. 1, 2, 3, 4, 5, 6,%) aldehyde or hydroxyl linking cluster.
  • the linking moiety of the COF has an organic-based parent chain that is comprised of one or more substituted or unsubstituted rings; wherein one or more of these rings are further substituted with two or more functional groups, including additional substituted or unsubstituted hydrocarbon and heterocycle groups, or a combination thereof; and wherein the linking moiety contains at least two (e.g. 2, 3, 4, 5, 6,%) aldehyde or hydroxyl linking clusters.
  • the linking moiety of the COF has an organic-based parent chain that is comprised of one or more substituted or unsubstituted rings; wherein one or more of these rings are further substituted with two or more functional groups, including additional substituted or unsubstituted hydrocarbon and heterocycle groups, or a combination thereof; and wherein the linking moiety contains at least four (e.g. 4, 5, 6,%) hydroxyl clusters .
  • the COF is generated from one or more linking moieties comprising structures of Formula II, III, IV, V, VII, VIII, IX, and X:
  • a 1 -A 56 are independently selected from the group comprising C, Si, N and P;
  • n is a number from 1 to 8;
  • T is an atom that can assume tetrahedral molecular geometry (e.g., carbon, silicon, germanium, tin), a tetrahedral group, or a tetrahedral cluster;
  • R i3_ R i45 are n d e p enc i en iy selected from the group comprising H, D, FG, (C 1 -C 20 ) alkyl, substituted (Ci-C 20 ) alkyl , (Ci-C 20 ) alkenyl , substituted (C 1 -C 20 ) alkenyl , (Ci-C 20 ) alkynyl , substituted (Ci- C 20 )alkynyl, hetero- ⁇ Ci-C 20 ) alkyl , substituted hetero- (Ci- ⁇ o) alkyl, hetero- (Ci-C 2 o) alkenyl , substituted hetero- (Ci-C 2 o) alkenyl, hetero- (Ci-C 20 ) alkynyl, substituted hetero- (Ci-C 20 o) alkynyl , (d- C 2 o) cycloalkyl, substituted (Ci ⁇
  • X 9 -X 14 are independently selected from the group comprising carbon, oxygen, sulfur, silicon, phosphorous, and nitrogen;
  • Y -Y 7 are independently selected from the group comprising H, D, and FG;
  • a linking moiety capable of linking a one or more cores disclosed herein comprises a compound having structural Formula (IV) :
  • a 1 "-A" are C;
  • R 36 -R 48 , R 1 -R 43 are H;
  • a linking moiety of Formula (IV) capable of linking a one or more cores disclosed herein is a compound selected from the group comprising:
  • a linking moiety capable of linking a one or more cores disclosed herein comprises a compound having structural Formula (VII):
  • A"-A are independently either C or N;
  • R 96 -R 101 are independently selected from the group comprising H, D, FG, (Ci-C 6 ) alkyl, substituted (Ci-C 6 ) alkyl, (Ci-C 6 ) alkenyl, substituted (Ci-C 6 ) alkenyl, (Ci-C 6 ) alkynyl , substituted (Ci ⁇
  • C 6 alkynyl, hetero- (C 1 -C5) alkyl, substituted hetero- (C 1 -C5) alkyl , hetero- (C 1 -C5) alkenyl , substituted hetero- (C 1 -C5) alkenyl , hetero- (Ci- Cs) alkynyl, substituted hetero- (C 1 -C5) alkynyl, (Ci-C 8 ) cycloalkyl, substituted (Ci-C e ) cycloalkyl, aryl, substituted aryl, heterocycle, and substituted heterocycle; and
  • a linking moiety capable of linking a one or more cores disclosed herein comprises a compound having structural Formula (VII) :
  • a linking moiety of Formula (VII) capable of linking a one or more cores disclosed herein is a compound selected from the group comprising:
  • a linking moiety capable of linking a one or more cores disclosed herein comprises a compound having structural Formula (VIII) :
  • a 31 -A 36 are independently either C or N;
  • R io2_ R iii are i n ⁇ j e p enc jently selected from the group comprising H, D, FG, (Ci-C 6 ) alkyl, substituted (Ci-C 6 ) alkyl, (Ci-C 6 ) alkenyl , substituted (Cj-Ce) alkenyl, (Ci-C 6 ) alkynyl, substituted (Ci ⁇
  • C 6 alkynyl, hetero- (C 1 -C5) alkyl, substituted hetero- ( ⁇ - ⁇ ) alkyl, hetero- (C 1 -C5) alkenyl , substituted hetero- (Cx-Cs) alkenyl , hetero-(C ! - C 5 ) alkynyl, substituted hetero- (C ! -C 5 ) alkynyl, (Ci-Ce) cycloalkyl, substituted (Ci-C 8 ) cycloalkyl , aryl, substituted aryl, heterocycle, and substituted heterocycle; and
  • a linking moiety capable of linking a one or more cores disclosed herein comprises a compound having structural Formula (IX) :
  • n is a number from 1 to 8 ;
  • a ⁇ -A 44 are independently either C or N;
  • a linking moiety capable of linking a one or more cores disclosed herein comprises a compound having structural Formula (X) :
  • T is either a C, Si, or Ge
  • a 45 -A 56 are independently either C or N;
  • R i26_ R i 5 are i nc ⁇ e p enc ⁇ ently selected from the group comprising H, D, FG, (Ci-Ce) alkyl, substituted (C x -C 6 ) alkyl , (d-Ce) alkenyl, substituted (Ci-C 6 ) alkenyl, (Ci-C 6 ) alkynyl, substituted (Ci ⁇
  • C 6 alkynyl, hetero- (Ci ⁇ C 5 ) alkyl, substituted hetero- (C1-C5) alkyl, hetero- (C1-C5 ) alkenyl , substituted hetero- (C ! -C 5 ) alkenyl , hetero- (Cj- C 5 ) alkynyl, substituted hetero- (C1-C5) alkynyl, (Ci-C 8 ) cycloalkyl, substituted (Ci-C 8 ) cycloalkyl, aryl, substituted aryl, heterocycle, and substituted heterocycle;
  • the linking moiety may have two or more linking clusters (e.g., three or more linking clusters) to obtain 2D and 3D- frameworks including cages and ring structures.
  • the disclosure provides a COF comprising two or more cores covalently bonded to one or more linking moieties through one or more linking clusters.
  • one or more linking clusters contain one or more atoms selected from the group comprising carbon, boron, oxygen, nitrogen and phosphorus.
  • one or more linking clusters contain oxygen or nitrogen .
  • a core and/or linking moiety contains at least one boron-containing linking cluster.
  • a core and/or linking moiety contains a boron- containing linking cluster which forms a covalent bond with a boron-lacking linking cluster.
  • a core and/or linking moiety contains a boron-containing linking cluster which forms a covalent bond with a boron-lacking linking cluster through a condensation reaction.
  • a core and/or linking moiety disclosed herein has at least one (e.g. 1, 2, 3, 4, 5, 6,%) linking
  • a core is linked to one or more linking moieties by at least 2, at least 3 or at least 4 boron containing linking clusters.
  • the boron- containing linking cluster comprises at least 2 or at least 4 oxygens capable of forming a link.
  • a boron-containing linking cluster disclosed herein comprises Formula (VI):
  • the COFs of the disclosure may optionally further comprise a guest species. Such a guest species may increase the surface area of the covalently linked organic networks.
  • the covalently linked organic networks of the disclosure further comprise an adsorbed chemical species.
  • adsorbed chemical species include for example, ammonia, carbon dioxide, carbon monoxide, hydrogen, amines, methane, oxygen, argon, nitrogen, organic dyes, polycyclic organic molecules, metal ions, inorganic clusters, organometallic clusters, and combinations thereof .
  • adding, removing, and/or modifying heating and/or cooling steps adding, removing, and/or modifying distillation steps, adding, removing, and/or modifying the atmosphere of one or more reactions, using or not using molecular sieves, etc.); removing, adding, or substituting solvents; adding or replacing catalysts; changing and/or modifying linking cluster functional groups (e.g. converting a functional group to a different functional group, modifying an existing functional group to make it more reactive, modifying an existing functional group so as to make it reactive under certain reaction conditions) ; protecting and de-protecting functional groups of the cores and/or linking moieties; and adding, replacing, or removing purification steps.
  • linking cluster functional groups e.g. converting a functional group to a different functional group, modifying an existing functional group to make it more reactive, modifying an existing functional group so as to make it reactive under certain reaction conditions
  • reaction mechanisms can be utilized to form one or more covalent bonds between one or more cores and one or more linking moieties.
  • reaction mechanisms include, but are not limited to, condensation, radical, S M 1 , S N 2 , S N AR , El, E2, E1 C B elimination, pericyclic, electrocylic, sigmatropic
  • linking clusters that react differently under the same conditions or alternatively under different conditions, one can tailor COFs so as to directionally, or not directionally, covalently bond one or more cores with one or more linking moieties so as to form heterogeneous nets.
  • reactivities can react with different linking clusters from a linking moiety in a predictive manner.
  • the reactivities of such linking clusters can vary not only based on composition, but also based on steric effects, electronic effects, neighboring atom effects, and/or a combination thereof.
  • one or more covalent bonds are formed between one or more cores and one or more linking moieties by using condensation reactions, for example, enamine formation, imine formation, Claisen condensation, aldol
  • typical reactions that can be used to form one or more covalent bonds between one or more cores and one or more linking moieties include, but are not limited to, Suzuki couplings, Chan-Lam couplings, Liebeskind-Srogl couplings, general S N 1 -based reactions, general S N 2 -based reactions, olefin metathesis, and conjugate addition based reactions.
  • the preparation of the frameworks of the disclosure can be carried out in either an aqueous or non-aqueous solvent system.
  • the solvent may be polar or non-polar, or a combination thereof, as the case may be.
  • the reaction mixture or suspension comprises a solvent system, linking moieties, and cores.
  • the reaction solution, mixture or suspension may further contain a catalyst.
  • the reaction mixture may be heated at an elevated temperature or maintained at ambient temperature, depending on the reaction components.
  • non-aqueous solvents that can be used in the reaction to make the framework and/or used as non-aqueous solvent for a post synthesized framework reaction, include, but is not limited to: n-hydrocarbon based solvents, such as pentane, hexane, octadecane, and dodecane; branched and cyclo-hydrocarbon based solvents, such as cycloheptane, cyclohexane, methyl cyclohexane, cyclohexene, cyclopentane; aryl and substituted aryl based solvents, such as benzene, toluene, xylene, chlorobenzene , nitrobenzene, cyanobenzene, naphthalene, and aniline; mixed hydrocarbon and aryl based solvents, such as, mixed hexanes, mixed pentanes, naptha, and petroleum ether; alcohol based
  • ester based solvents such as, butylacetate, sec-butyl acetate, tert-butyl acetate, diethyl carbonate, ethyl acetate, ethyl acetoacetate , ethyl lactate, ethylene carbonate, hexyl acetate, isobutyl acetate, isopropyl acetate, methyl acetate, propyl acetate, and propylene carbonate; ether based solvents, such as, di- tert-butyl ether, diethyl ether, diglyme, diisopropyl ether, 1,4-dioxane, 2- methyltetrahydrofuran, tetrahydrofuran (THF) , and tetrahydropyran; glycol ether based solvents, such as, 2-butoxyethanol ,
  • halogenated based solvents such as, carbon tetrachloride, cholorbenzene, chloroform, 1 , 1-dichloroethane , 1,2- dichloroethane, 1 , 2-dichloroethene, dichloromethane (DCM), diiodomethane, epichlorohydrin, hexachlorobutadiene, hexafluoro-2- propanol, perfluorodecalin, perfluorohexane, tetrabromomethane, 1, 1, 2, 2-tetrchloroethane, tetrachloroethylene, 1,3,5- trichlorobenzene, 1, 1, 1-trichloroethane, 1, 1, 2-trichloroethane, trichlproethylene, 1 , 2 , 3-trichlorobenzene, 1, 1, 1-trichloroethane, 1, 1, 2-trichloroethane, trichlproethylene, 1
  • nitromethane sulfur based solvents, dimethyl sulfoxide (DMSO), methylsulfonylmethane, sulfolane, isocyanomethane, thiophene, and thiodiglycol ; urea, lactone and carbonate based solvents, such as l-3-dimethyl-3, 4, 5, 6-tetrahydro-2 (1H) -pyrimidinone (DMPU), 1-3- dimethyl-2-imidazolidinone , butyrolactone , cis-2 , 3-butylene carbonate, trans-2 , 3-butylene carbonate, 2, 3-butylene carbonate; carboxylic acid based solvents, such as formic acid, acetic acid, chloracetic acid, trichloroacetic acid, trifluoroacetic acid, propanoic acid, butanoic acid, caproic acid, oxalic acid, and benzoic acid; boron and phosphorous based solvents, such as triethy
  • the nonaqueous solvent used as the solvent system in synthesizing the framework has a pH less than 7.
  • the solvent system used to synthesize the framework is an aqueous solution that has a pH less than 7.
  • the nonaqueous solvent used as the solvent system in synthesizing the framework has a pH greater than 7.
  • the solvent system used to synthesize the framework is an aqueous solution that has a pH greater than 7.
  • the solvent system used to synthesize the framework is an aqueous solution or non aqueous solution that has a neutral pH.
  • the solvent system used to synthesize the frameworks contains mesitylene.
  • the solvent system used to synthesize the frameworks contains acetic acid.
  • the solvent system used to synthesize the frameworks contains an alcohol.
  • the COF crystalline product may be either
  • polycrystalline or a single crystal For example, after the chemical reactions a porous, semicrystalline to crystalline organic material with high surface area is produced.
  • COFs having any of the following framework type codes can be obtained: ABW ACO AEI AEL AEN AET AFG AFI AFN AFO AFR AFS AFT AFX AFY AHT ANA APC APD AST ASV ATN ATO ATS ATT ATV AWO AWW BCT *BEA BEC BIK BOG BPH BREI CAK1 CAS
  • the covalent-organic frameworks set forth above may include an interpenetrating covalent-organic framework that increases the surface area of the covalent-organic framework.
  • the frameworks of the disclosure may include an interpenetrating covalent-organic framework that increases the surface area of the covalent-organic framework.
  • a COF of the disclosure may be generated by first utilizing a plurality of linking moieties having different functional groups, wherein at least one of these functional groups may be modified, substituted, or eliminated with a different functional group post-synthesis of the COF.
  • at least one linking moiety comprises a functional group that may be post-synthesized reacted with a post framework reactant to further increase the diversity of the functional groups of the COF.
  • the COFs may be further modified by reacting with one or more post framework reactants that may or may not have denticity.
  • the COFs as-synthesized are not reacted with a post framework reactant.
  • the COFs as-synthesized are reacted with at least one post framework reactant.
  • the COFs as-synthesized are reacted with at least two post framework reactants.
  • the COFs as- ' synthesized are reacted with at least one post framework reactant that will result in adding denticity to the framework.
  • Examples of chemical reaction mechanisms contemplated by this disclosure include, but is not limited to, condensation, radical, S N 1 , S N 2 , S N AR , El, E2, E1 C B elimination, nucleophilic internal substitution (S N 1 ) , pericyclic, electrocylic, sigmatropic rearrangements, cycloaddition, and electrophilic aromatic substitution, electrophilic addition, oxidation, reduction, cycloadition, ring closing metathesis (RCM) , pericylic, electrocylic, rearrangement, carbene, carbenoid, cross coupling, and degradation.
  • linking moieties and/or cores that possess appropriate reactive functionalities can be chemically transformed by a suitable reactant post framework synthesis to add further functionalities to the COF.
  • a suitable reactant post framework synthesis By modifying the organic moieties and/or cores within the COF post-synthesis, access to functional groups that were previously inaccessible or accessible only through great difficulty and/or cost is possible and facile.
  • the post framework reactant is selected to have a property selected from the group comprising, binds a metal ion, increases the hydrophobicity of the framework, modifies the gas sorption of the framework, modifies the pore size of the framework, and tethers a catalyst to the framework.
  • the post framework reactant can be a saturated or unsaturated heterocycle.
  • the post framework reactant has 1-20 carbons with functional groups including atoms such as N, S, and 0.
  • the post framework reactant is selected to modulate the size of the pores in the framework.
  • the post framework reactant is selected to increase the hydrophobicity of the framework.
  • the post framework reactant is selected to increase or add catalytic efficiency to the framework .
  • the post framework reactant is selected to increase the charge mobility of the framework.
  • the post framework reactant is selected to increase the time the framework holds a charge.
  • a post framework reactant is selected so that organometallic complexes can be tethered to the framework.
  • organometallic complexes can be used, for example, as heterogeneous catalysts
  • the post framework reactant is selected to modulate gas separation of the framework.
  • the post framework reactant creates an electric dipole moment on the surface of the framework when it chelates a metal ion.
  • a gas storage material comprising a COF.
  • the COF includes one or more sites for storing gas molecules.
  • Gases that may be stored in the gas storage material of the disclosure include gas molecules comprising available electron density for attachment to the one or more sites on the surface are of a pore or
  • Such electron density includes molecules having multiple bonds between two atoms contained therein or molecules having a lone pair of electrons.
  • gases include, but are not limited to, the gases comprising a component selected from the group comprising ammonia, argon, carbon dioxide, carbon monoxide, hydrogen, and combinations thereof.
  • the gas storage material is a hydrogen storage material that is used to store hydrogen (H 2 ) .
  • the gas storage material is a carbon dioxide storage material that may be used to separate carbon dioxide from a gaseous mixture.
  • the gaseous storage site comprises a pore in a COF.
  • this activation involves removing one or more chemical moieties (guest molecules) from the COF.
  • guest molecules include species such as water, solvent molecules contained within the COF, and other chemical moieties having electron density available for attachment.
  • the COFs provided herein include a plurality of pores for gas ads'orption.
  • the plurality of pores has a unimodal size distribution.
  • the plurality of pores have a multimodal (e.g., bimodal) size distribution.
  • Sorption is a general term that refers to a process that results in the association of atoms or molecules with a target material. Sorption includes both adsorption and absorption.
  • Absorption refers to a process in which atoms or molecules move into the bulk of a porous material, such as the absorption of water by a sponge.
  • Adsorption refers to a process in which atoms or molecules move from a bulk phase (that is, solid, liquid, or gas) onto a solid or liquid surface.
  • the term adsorption may be used in the context of solid surfaces in contact with liquids and gases. Molecules that have been adsorbed onto solid surfaces are referred to generically as adsorbates, and the surface to which they are adsorbed as the substrate or adsorbent.
  • Adsorption is usually described through isotherms, that is, functions which connect the amount of adsorbate on the adsorbent, with its pressure (if gas) or concentration (if liquid).
  • desorption refers to the reverse of adsorption, and is a process in which molecules adsorbed on a surface are transferred back into a bulk phase.
  • porous compounds adsorb guest molecules
  • the mechanism of adsorption is complicated.
  • developments of a new class of materials whose structure are well organized are prerequisites, because one needs to consider specific interaction between adsorbent and adsorptive.
  • Recently discovered crystalline porous materials of COFs are good candidates to acquire general knowledge systematically. That is, not only apparent surface area and pore volume but also pore size distribution and adsorption sites needs to be analyzed by use of Ar isotherms .
  • the materials provided herein may be used for methane storage and purification of natural gases.
  • the advantage of COFs over well studied activated carbons is related to the robust porous structures and the ease to functionalize the pore and surface by choosing appropriate organic linkers. Improvements in this disclosure are that i) optimized pore size for CH 4 sorption has been discovered and ii) functionalized compounds show good sorption capacities. These discoveries will lead COFs to become more selective and more efficient gas sorption and purification adsorbents. The ability of gas sorption has been examined by measuring CH 4 isotherms under wide range pressure. Some compound showed high capacity rather than zeolite 13X and MAXSORB (carbon powder) which are widely used as adsorbents or separation agents.
  • the materials may be used for gas storage and separation.
  • the advantage of COFs over well studied activated carbons and zeolites is related to the robust porous structures and the ease to functionali ze the pore and surface by choosing appropriate organic linkers and/or metal ions.
  • COFs Covalent Organic Frameworks
  • C0 2 i.e. green house gas
  • porous COFs having functionalized pores, high surface area, and high chemical and thermal stability as adsorbents for reversible hydrogen storage. These materials could be widely applicable to store significant amounts of H 2 in a safe and practical way. [00181 ] In another embodiment, the materials may be used in an
  • H 2 tank for hydrogen-powered fuel cells H 2 tank for hydrogen-powered fuel cells .
  • the disclosure also provides chemical sensors (e.g.
  • resistometric sensors capable of sensing the presence of an analyte of interest.
  • sensors that act as analogs of the mammalian olfactory system.
  • sensor systems are easily contaminated.
  • the porous structures of the disclosure provide a defined interaction area that limits contamination.
  • various polymers are used in sensor systems including conductive polymers (e.g.,
  • the disclosure provides electrical devices comprising COFs of the disclosure for use in displays and screens as well as other components.
  • Scheme I demonstrates the synthesis of 5,10,15,20- tetrakis- [4- (4 , 4, 5, 5-tetramethyl- [1,3, 2 ] dioxaborolan-2-yl ) -phenyl] - porphyrin (Intermediate 1).
  • Scheme II demonstrates the synthesis of tetra (p-boronic acid-phenyl) porphyrin (TBPP) , a core of the disclosure.
  • Tetra (p-boronic acid-phenyl) porphyrin (TBPP) 4 Sodium periodate (6.0 g) was added to a solution of 3 (2.5 g, 2.2 mmol ) in THF/H 2 0 (4:1) (100 mL) . After stirring the solution at 60 °C for 30 mL, 1M HC1 (20 mL) was added. The mixture was stirred at ambient temperature for about 16 hours. The solvent was removed in vacuo. The resulting crude solid was resuspended in water, filtered, and washed thoroughly with water (200 mL) .
  • Scheme III presents the synthesis of two COFs of the disclosure (COF-366 and COF-66) .
  • COF-366 A Pyrex tube was charged with terephthaldehyde (5.6 mg, 0.04 mmol), tetra (p-amino-phenyl ) porphyrin ( ⁇ ) (13.5 mg, 0.02 mmol), 0.5 mL of ethanol, 0.5 mL of mesitylene, and 0.1 mL of 6 M aqueous acetic acid. The tube was flash frozen at 77 K (liquid N 2 bath) , evacuated to an internal pressure of 150 mTorr and then flame sealed. The reaction was heated at 120 °C for 72 h.
  • COF-66 A mixture of tetra (p-boronic acid-phenyl) porphyrin (TBPP) (15.8 mg, 0.02 mmol) and 2,3,4,5- tetrahydroxyanthrancene (THAn) (10.0 mg, 0.04 mmol) in a mixture of 0.5 mL dioxane and 0.5 mL mesitylene was heated at 120 °C for 72 h. The resulting solid was collected by centrifugation, washed with anhydrous dioxane, and anhydrous acetone. The solid was then dried at ambient temperature at 10 ⁇ 2 mTorr for 12 h to afford the title product as a greenish purple powder.
  • TBPP tetra (p-boronic acid-phenyl) porphyrin
  • TAAn 2,3,4,5- tetrahydroxyanthrancene
  • Powder X-Ray Diffraction Analyses Powder X-Ray Diffraction data were collected using a Bruker D8-advance ⁇ -2 ⁇ diffractometer in reflectance Bragg-Brentano geometry employing Ni filtered Cu Ka line focused radiation at 1600 W (40 kV, 40 mA) power and equipped with a position sensitive detector (PSD) with an electronic window of 6°. Samples were mounted on zero background sample holders by dropping powders from a wide-blade spatula and then leveling the sample surface with a razor blade. Given that the particle size of the 'as synthesized' samples were already found to be quite monodisperse no sample grinding or sieving was used prior to analysis. The best counting statistics were achieved by collecting samples using a 0.02° 2 ⁇ step scan from 1 - 50° with exposure time of 1 s per step. No peaks could be resolved from the baseline for 2 ⁇ > 35° therefore this region was not considered for further analysis.
  • diffraction patterns with broad peaks including for instance, ordered mesoporous silicas. These materials exhibit only long-range order, with a well-defined framework and pore systems, but the exact location of the silicon and oxygen atoms cannot be determined precisely. In the present cases, the broadening of the peaks can be attributed to a number of defects in the perfect crystal lattice, as well as to the particle size effects. The possibility of a lack of short-range order in the structure cannot be ruled out.
  • the structural models are made based on geometrical features of the employed building blocks, which reduces the number of possibilities and allows us to propose crystalline materials models which explain the observed properties.
  • Table 1 Crystal data of simulated crystal structure in the eclipsed form (tetragonal space group) .
  • both the materials may be described as being composed of square layers, laying on the ab plane and stacking along the 001 direction with interlayer distances between the centroids of the stacked porphyrin units of 5.64 and 3.81 A for COF-366 and COF-66, respectively. Hollow channels are produced, running along the c axis, with a diameter of 20.2 and 23.2 A for COF-366 ( Figure 2) and COF-66 ( Figure 3) respectively, as calculated using the Platon cavity routine.
  • FP-TRMC Flash-photolysis time-resolved microwave conductivity was performed using an in situ TRMC system. A resonant cavity was used to obtain a high degree of sensitivity in the conductivity measurement. The resonant frequency and microwave power were set at -9.1 GHz and 3 m , respectively, so that the electric field of the microwave was small enough not to disturb the charge carrier motion.
  • the TRMC signal picked up by a diode (rise time ⁇ 1 ns), was monitored by a Tektronics model TDS3052B digital oscilloscope.
  • Time-of-flight devices [Al / thin film sample / Indium Tin Oxide (ITO)] were irradiated by 355 nm laser with a photon density of 9.1 x 10 15 cm “2 . The applied bias was changed from 2 to 10 V.
  • the transient charge-carrier conductions of COF-366 and COF-66 were investigated by performing laser flash photolysis time- resolved microwave conductivity (FP-TRMC) measurements at 25 °C on irradiation with a 355-nm pulse laser at 3.5-3.6 mJ cm ""2 pulse _1 .
  • the transient conductivity profile shows a rapid rise in current with a maximum ⁇ value of 4.1 X 10 "5 cm 2 V'V 1 (COF-366) and 1.7 X 1CT 5 cm 2 V ⁇ s "1 (COF-66) at a photon density of 9.1 X 10 15 photons cm "2 , respectively ( Figure 4a) .
  • the mobilities are high; both values are even higher than that of the inorganic amorphous silicon ( ⁇ 1 cm 2 V “1 s “1 ) , one order of magnitude higher than that of the 'state-of-the-art' PBTTT (0.72 cm 2 V _1 s " V and P3HT (0.1-0.5 cm 2 V _1 s _1 ) 5 and at least four orders of magnitude higher than those of common conjugated polymers (10 "5 ⁇ 10 "6 cm 2 V -1 s " thus marking ( Figure 4a-b) COF-366 and COF-66 as the highest- mobility highly-ordered organic semiconductors yet known.
  • the value estimated by TRMC will coincide with the value in the single crystal, if the average ordered structure of microcrystalline COFs is longer than 5 nm.
  • the high-mobility carrier conduction is related to the eclipsed arrangements and n- conjugated intra-layer structures, accounting for the high mobility present in COF-366 than in COF-66.
  • NMR nuclear magnetic resonance
  • MAS Bruker magic angle-spinning
  • the magic angle was adjusted by maximizing the number and amplitudes of the signals of the rotational echoes observed in the 79 Br MAS FID signa from KBr.
  • Cross-polarization with MAS (CP-MAS) used to acquire 13 C data at 75.47 MHz.
  • the l H and 13 C ninety- degree pulse widths were both 4 ps .
  • the CP contact time varied from 1.5 to 5 ms .
  • High power two-pulse phase modulation (TPPM) 1 H decoupling was applied during data acquisition.
  • the decoupling frequency corresponded to 72 kHz.
  • the MAS sample- spinning rate was 10 kHz.
  • Recycle delays between scans varied between 3 and 10 s, depending upon the compound as determined by observing no apparent loss in the 13 C signal from one scan to the next.
  • the 13 C chemical shifts are given relative to tetramethylsilane as zero ppm, calibrated using the methylene carbon signal of adamantine assigned to 37.77 ppm as secondary reference.
  • Various COFs and cores were studied using 13 C NMR, and the tracings are provided as follows: TAPP ( Figure 7), COF-366 (Figure 8), TBPP ( Figure 9), and COF-66 ( Figure 10).
  • the B MAS NMR tracing for TBPP is presented in Figure 11 and the n B MAS NMR tracing for COF-66 is presented in Figure 12.
  • Bottom-contact devices were fabricated for both COFs .
  • Gold electrodes were thermally deposited on a Si/Si0 2 substrate with a 300-nm Si0 2 layer to create channels that are 2-10 pm in length.
  • One drop of COF dispersion was drop-cast onto the
  • FIG. 17 presents an I-V profile of a 2 um width Au gap with COF- 366 (light grey) and COF-66 (medium grey) .
  • Inset Gold electrode used for conductivity measurements .
  • Gas Adsorption Measurements and Non-Local DFT Pore Size Distributions for COF-366 and COF-66 Low-pressure Ar adsorption measurements were performed on an Autosorb-1 (Quantachrome) volumetric analyzer. The samples were outgassed to 10 "6 Torr. Helium was used for the estimation of the dead volume, assuming that it is not adsorbed at any of the studied temperatures. A liquid Ar bath was used for adsorption measurements at 87 K.
  • the saturation pressure Po was measured throughout the Ar analyses by means of a dedicated saturation pressure transducer, which allowed us to monitor the vapor pressure for each data point.
  • Ultra-high-purity grade Ar and He (99.999% purity) were used throughout the adsorption
  • UV-Vis Diffuse Reflectance and Fluorescence Spectra of COF-366 and COF-66 UV-Vis diffuse reflectance spectra (in Kubelka- Munk unit) were recorded on a JASCO model V-570 spectrometer equipped with integration sphere. Fluorescence Spectra were recorded on a Hitachi F-2700 fluorescence spectrometer.
  • FP-TFMC Profiles at Different Photon Densities FP-TRMC profiles (Figure 26) of COF-366 (open circles) and COF-66
  • Figure 30 presents the normalized decays of FP-TRMC transient (light grey) and TAS signal (dark grey) at 440 nm for COF-66 (a, b) and COF-366 (c, d) .
  • Figure 30 indicates that the transients show good agreement with each other in the shorter time region; therefore, it is possible to obtain the 'pure' conductivity values in this region by subtracting the contribution from the thermal effect.
  • Figure 30 (b, d) also shows the deviation in the two transient curves, especially in the longer time region.
  • the lifetimes of the charged species for both COFs are ⁇ 80 ps or even longer in spite of the higher mobility of the charge carriers.
  • the lifetime of free charge carriers is the primary factor in the promotion of the effective charge carrier separation. Therefore, it is possible to consider fabricating a future hetero-j unction type solar cell based on the COFs disclosed herein due to

Abstract

The disclosure relates generally to materials that comprise conductive covalent organic frameworks. The disclosure also relates to materials that are useful to store and separate gas molecules and sensors.

Description

CONDUCTIVE OPEN FRAMEWORKS
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH
[0001] This invention was made with Government support of Grant
No. HDTRA1-08-1-0023 awarded by the United States Department of Defense, Defense Threat Reduction Agency and Grant No. DE-FG36- 05GO15001 awarded by the United States Department of Energy. The Government has certain rights in this invention.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0002] This application claims priority to U.S. Provisional
Application Serial No. 61/386,927, filed September 27, 2010, the disclosure of which is incorporated herein by reference.
TECHNICAL FIELD
[0003] The application relates generally to porous materials that comprise organic frameworks. The application also relates to materials that are useful as conductive materials, to store and separate gas molecules, as well as sensors based upon the
f ameworks .
BACKGROUND
[0004] There has been an increasing demand for porous materials in industrial applications such as gas storage, separations, catalysis and conductive materials. Some of the advantages of organic porous materials over their inorganic or metal-organic counterparts, include: lighter molecular weight, easier to functionalize, and generally have better kinetic stability.
Moreover, organic porous materials are more environmentally friendly than comparable frameworks.
[0005] Current methods to introduce porosity into polymeric structures are largely based on processing the polymers under certain conditions, or by preparing the polymers from colloidal systems. All glassy polymers contain some void space (free volume), although this is usually less than 5% of the total volume. It is possible to "freeze-in" up to 20% additional free volume for some glassy polymers with rigid structures by rapid cooling, from the molten state below the glass transition temperature, or by rapid solvent removal from a swollen glassy polymer. High free volume polymers are currently used in industrial membranes for transporting either gases or liquids. The voids in these materials, however, are not interconnected and therefore reflect a low accessible surface area as determined by gas adsorption. Moreover, the pore structure is irregular and not homogeneous.
[0006 ] Another existing class of porous organic materials includes polyacetylenes containing bulky substituent groups. The high gas permeabilities of poly ( 1-trimethylsilyl-l-propyne)
("PTMSP") has been . observed since 1983. This material contained a large free volume (~30%), and was able to separate organic compounds from gases or water. The stability of PTMSP is limited by its rapid loss of microporosity due to non-uniform pore structure, exposure to heat, oxygen, radiation, or UV light, or any
combination of the above.
[ 0007 ] Recently, polymers of intrinsic microporosity (PIMs) were shown to have exceptional porosity for organic polymers. As measured by gas adsorption, PIMs were reported to contain
relatively high surface areas (430-850 m2/g) . The porosity of PIMs is likely due to their highly rigid and contorted molecular structures which inhibit efficiently packing in space. PIMs, however, display marked hysteresis at low pressures.
SUMMARY
[ 0008] The disclosure provides electrical or proton conductive open organic covalent frameworks comprised of one or more types of cores and one or more types of linking moieties.
[ 0009 ] In a certain embodiment, a covalent-organic framework
(COF) disclosed herein comprises a plurality of cores, wherein each core forms at least one covalent bond to at least one linking moiety; and where the COF comprises a conductive core moiety and/or comprises a conductive linking moiety.
[ 0010 ] In a further embodiment, a COF disclosed herein contains one or more cores that are substantially planar and which contain one or more substituted or unsubstituted aryls, substituted or unsubstituted aromatic heterocycles , substituted or unsubstituted alkenes, or combinations thereof.
[0011] In yet a further embodiment, a COF disclosed herein contains one or more cores which has a structure selected from the group comprising Formula I, II, III, IV, and V:
Figure imgf000005_0001
R1-R59 are independently selected from the group comprising H, D, FG, (C1-C20) alkyl, substituted (Ci-C20) alkyl , (d-C20) alkenyl, substituted (C1-C20) alkenyl, (C1-C20) alkynyl , substituted (Ci- C20)alkynyl, hetero- (Ci-C20) alkyl, substituted hetero- (C1-C20) alkyl , hetero- (Ci-C20) alkenyl , substituted hetero- (C1-C20) alkenyl, hetero- (Ci-C20) alkynyl, substituted hetero- (C1-C20) alkynyl, (Ci~
C20) cycloalkyl, substituted (Cj-C2o) cycloalkyl, aryl, substituted aryl, heterocycle, substituted heterocycle, wherein R5 and R6 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and
heterocycle, wherein R7 and R8 are linked together to form a substituted or unsubstituted ring selected from the group
comprising cycloalkyl, aryl and heterocycle, wherein R9 and R10 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and
heterocycle, and wherein R11 and R12 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and heterocycle;
X1-X13 are independently selected from the group comprising carbon, oxygen, sulfur, silicon, phosphorous, and nitrogen;
Y1-Y7 are independently selected from the group comprising H, D, and FG;
A1-A21 are independently selected from the group comprising C, N, Si and P;
with the proviso that a X may not exceed its maximum valence by binding a Y, or R1-R'1; and
with the proviso that a A may not exceed its maximum valence by binding a R.
[0012 ] In a certain embodiment, a COF disclosed herein has one or more cores with a structure of Formula I:
Figure imgf000007_0001
wherein,
R1-R12 are independently selected from the group comprising H, D, FG, (Ci-Ce) alkyl, substituted (Ci- C6)alkyl, (Ci-C6) alkenyl , substituted (Ci-C6) alkenyl , (C!-C6) alkynyl , substituted (Ci~
C6) alkynyl, hetero- (Ci-C6) alkyl , substituted hetero- (Ci-C6) alkyl , hetero- (Ci-C6) alkenyl , substituted hetero- (Ci-Ce) alkenyl , hetero- (Ci- C6) alkynyl, substituted hetero- (Cj-C6) alkynyl, (Ci-C6) cycloalkyl , substituted (Ci-C6) cycloalkyl, aryl, substituted aryl, heterocycle, substituted heterocycle, wherein R5 and R6 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and heterocycle, wherein R7 and R8 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and
heterocycle, wherein R9 and R10 are linked together to form a substituted or unsubstituted ring selected from the group
comprising cycloalkyl, aryl and heterocycle, and wherein R11 and R12 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and
heterocycle;
Xx-X8 are independently selected from the group comprising carbon and nitrogen;
Yx-Y4 are independently selected from the group comprising H, D, and FG; and
with the proviso that a X may not exceed its maximum valence by binding a Y, or R1-R . [0013] In another embodiment, a COF disclosed herein has one or more cores with a structure of Formula lb:
Figure imgf000008_0001
wherein,
Rx-R4, R80-R95 are independently selected from the group comprising H, D, FG, (Ci-C6) alkyl, substituted (Cx- C6)alkyl, (Ci~ C6)alkenyl, substituted (Ci-C6) alkenyl , (Ci-C6) alkynyl , substituted (Cx-C6) alkynyl, hetero- (Ci-C6) alkyl , substituted hetero- (Ci-C6) alkyl , hetero- (C!-C6) alkenyl , substituted hetero- (Ci-Ce) alkenyl , hetero- (Ci- C6) alkynyl, substituted hetero- (Ci-C6) alkynyl, (Ci-C6) cycloalkyl , substituted (Ci-C6) cycloalkyl , aryl, substituted aryl, heterocycle, and substituted heterocycle;
X1-X4 are independently selected from the group comprising carbon and nitrogen; and
with the proviso that a X may not exceed its maximum valence by binding a R.
[0014 ] In a further embodiment, a COF disclosed herein has one or more cores with a structure of Formula la:
Figure imgf000009_0001
(la)
wherein,
R1-R12, R60-R79 are independently selected from the group comprising H, D, FG, (Ci-C6) alkyl, substituted (Ci- C6)alkyl, (Cx- C6)alkenyl, substituted (Ci-C6) alkenyl , (d-C6) alkynyl, substituted (Ci-C6) alkynyl, hetero- (Cx-Ce) alkyl, substituted hetero- (Ci-C6) alkyl , hetero- (Ci-C6) alkenyl , substituted hetero- (Ci-C6) alkenyl, hetero- (Ci- C6) alkynyl, substituted hetero- (Ci-C6) alkynyl , (Ci-C6) cycloalkyl , substituted (Ci-C6) cycloalkyl, aryl, substituted aryl, heterocycle, substituted heterocycle, wherein R5 and R6 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and heterocycle, wherein R7 and R8 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and
heterocycle, wherein R9 and R10 are linked together to form a substituted or unsubstituted ring selected from the group
comprising cycloalkyl, aryl and heterocycle, and wherein R11 and R12
7 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and
heterocycle .
[ 0015 ] In yet a further embodiment, a COF disclosed herein has one or more cores with a structure of Formula la:
Figure imgf000010_0001
da)
wherein,
R1-R12, R60-R61, R63-R66, R68-R71, R73-R76, R78-R79 are H.
R62, R67, R72, and R77 are FG.
[0016 ] In yet a further embodiment, a COF disclosed herein has one or more cores and/or linking moieties that has a linking cluster that contains at least one heteroatom. In another embodiment, a COF disclosed herein has one or more cores and/or linking moieties that has a linking cluster which contains a heteroatom selected from the group comprising B, O, N, S, Si, P, Al, F, CI, Br, and I. In yet another embodiment, a COF disclosed herein has one or more cores and/or linking moieties that has a linking cluster which contains a B, 0 and N.
[0017 ] In a certain embodiment, a COF disclosed herein has one or more cores and/or linking moieties that has a linking cluster with the formula
Figure imgf000011_0001
wherein x is number from 1 to 2, y is a number from 1 to 8, z is a number from 1 to 8, and R is selected from the group comprising H, D, and FG .
[0018 ] In another embodiment, a COF disclosed herein contains one or more linking moieties that has an organic-based parent chain which is comprised of one or more substituted or unsubstituted rings; wherein one or more of these rings is further substituted with one or more functional groups, including additional
substituted or unsubstituted hydrocarbons and heterocycle groups, or a combination thereof; and wherein the linking moiety contains at least one linking cluster.
[0019] In yet another embodiment, a COF disclosed herein has one or more linking moieties with a structure selected from the group comprising Formula II, III, IV, V, VII, VIII, IX, and X:
Figure imgf000012_0001
10
Figure imgf000013_0001
VII) (VIII) (IX) , and
Figure imgf000013_0002
(X)
wherein :
A1-A56 are independently selected from the group comprising C, Si, N and P;
n is a number from 1 to 8;
11 T is selected from the group comprising an atom that can assume tetrahedral molecular geometry, a tetrahedral group, and a tetrahedral cluster;
are independently selected from the group comprising H, D, FG, (C1-C20) alkyl, substituted (Ci-C20) alkyl, (C1-C20) alkenyl, substituted (Ci-C2o) alkenyl, (C1-C2o) al kynyl , substituted (Ci~
C2o)alkynyl, hetero- (C1-C20) alkyl, substituted hetero- (Ci-C20) alkyl, hetero- (C1-C20) alkenyl , substituted hetero- (C!-C2o) alkenyl , hetero- (C1-C20) alkynyl, substituted hetero- (C1-C20) alkynyl, (Ci- C20) cycloalkyl , substituted (C1-C20) cycloalkyl , aryl, substituted aryl, heterocycle, and substituted heterocycle;
X9-Xx< are independently selected from the group comprising carbon, oxygen, sulfur, silicon, phosphorous, and nitrogen;
Y5-Y7 are independently selected from the group comprising H, D, and FG;
with the proviso that a X may not exceed its maximum valence by binding a Y; and
with the proviso that an A may not exceed its maximum valence by binding a R.
[ 0020 ] In a certain embodiment, a COF disclosed herein has one or more linking moieties with a structure of Formula IV:
Figure imgf000014_0001
( IV )
wherein,
A -A are independently either C or N;
R35-R44 are independently selected from the group comprising H, D, FG, (Ci-C6) alkyl, substituted (Ci-C6) alkyl , (Ci~C6) alkenyl , substituted (Ci-C6) alkenyl, (Cj-C6) alkynyl , substituted (Cj- C6) alkynyl, hetero- (C1-C5) alkyl , substituted hetero- (C1-C5) alkyl , hetero- (C1-C5) alkenyl , substituted hetero- (C1-C5) alkenyl, hetero- (Ci- C5) alkynyl, substituted hetero- (C1-C5) alkynyl , (Ci-C8) cycloalkyl, substituted (Ci-C8) cycloalkyl, aryl, substituted aryl, heterocycle, and substituted heterocycle; and
with the proviso that an A may not exceed its maximum valence by binding a R.
[ 0021 ] In a further embodiment, a COF disclosed herein has one or more linking moieties with a structure of Formula IV:
Figure imgf000015_0001
( IV )
wherein,
A16-A21 are C;
R36-R48, R"-R" are H; and
R35, R4\ R39-R40 are FG.
[ 0022 ] In yet a further embodiment, a COF disclosed herein has one or more linking moieties selected from the group comprising:
Figure imgf000015_0002
Figure imgf000016_0001
[0023] In a further embodiment, a COF disclosed herein has one or more linking moieties with a structure of Formula VII:
Figure imgf000016_0002
! VI I ;
wherein,
A -A are independently either C or N;
R96_Rioi are ncjepencjentiy selected from the group comprising H, D, FG, (Ci-Cs) alkyl, substituted (Ci-C6) alkyl , (Ci-C6) alkenyl, substituted (Ci-C6) alkenyl , (Ci-C6) alkynyl, substituted (Ci~
C6)alkynyl, hetero- (Ci-C5) alkyl , substituted hetero- (Ci-C5) alkyl , hetero- (Ci-C5) alkenyl, substituted hetero- (Ci~C5) alkenyl, hetero- (Ci- C5) alkynyl, substituted hetero- (C1-C5) alkynyl , (Ci-CB ) cycloalkyl , substituted (Ci-C8) cycloalkyl, aryl, substituted aryl, heterocycle, and substituted heterocycle; and
with the proviso that an A may not exceed its maximum valence by binding a R.
[0024 ] In yet a further embodiment, a COF disclosed herein has one or more linking moieties with a structure of Formula VII:
Figure imgf000017_0001
(VII)
wherein,
A28-A30 are C;
R96, R98-R99, R101 are independently either an H or D; and
R97 and R100 are FG .
[ 0025 ] In a certain embodiment, a COF disclosed herein has one or more linking moieties selected from the group comprising:
Figure imgf000017_0002
Figure imgf000018_0001
.
[0026] In a further embodiment, a COF disclosed herein has one or more linking moieties that has a linking cluster selected from the group comprising acyl halide, halide, ester, carboxylic acid, amine, hydroxyl, ether, and amide.
[0027] In yet a further embodiment, a COF disclosed herein is post-synthesis functionalized to comprise a metal or conductive moiety .
[0028] In another embodiment, a COF disclosed herein has hole conducting mobilities of at least 3.0 cm2V"1s"1. In yet another embodiment, a COF disclosed herein has hole conducting mobilities of at least 8.0 cnrW1.
[0029] In a certain embodiment, a COF disclosed herein can hold a charge for at least 75 ps.
[0030] In another embodiment, a COF disclosed herein can be used in the manufacture of a flexible display, a semiconductor, a gas storage device, and/or a chemical sensor.
[0031] In another embodiment, a COF can be used as
substantially described herein with reference to the specification and figures .
DESCRIPTION OF DRAWINGS
[0032] Figure 1A-B shows X-ray analysis of (A) COF-366, and (B)
COF-66, with the observed pattern in dark grey, the refined profile in light grey, and the difference plot in medium grey (observed minus refined profiles) . The bottom trace is the calculated PXRD pattern from Materials Studio.
[0033] Figure 2A-B shows structural representations of (A) COF-
366 based on powder diffraction and modeling projected along their c axis (H atoms are omitted) . (B) COF-366 based on powder
diffraction and modeling projected along their b axis (H atoms are omitted) . Carbon, nitrogen and oxygen are represented as light grey, medium grey and dark grey spheres, respectively.
[0034] Figure 3A-B shows structural representations of (A) COF-
66 based on powder diffraction and modeling projected along their c axis (H atoms are omitted) . (B) COF-66 based on powder diffraction and modeling projected along their b axis (H atoms are omitted) . Carbon, boron, nitrogen and oxygen are represented as light grey, light to medium grey, medium grey and dark grey spheres,
respectively .
[0035] Figure 4A-B shows carrier mobility. (A) FP TRMC profile of COF-366 (light grey) and COF-66 (dark grey) at 25 °C upon irradiation with a 355 nm pulse laser at a power of 1.4 * 1016 and 2.1 x 1016 photons cm"2, respectively. (B) Accumulated number of photo induced charge carriers upon 355 nm pulse exposure to COF-366 (dark grey) / COF-66 (light grey) sandwiched by ITO and Al electrodes. Excitation was carried out at the photon density of 9.1 x 1015 photons cm"2.
[0036] Figure 5 shows simulated powder patterns for the staggered (dark grey) and eclipsed models (light grey) for COF-366. Experimental diffraction pattern was overlaid (black) .
[0037] Figure 6 shows simulated powder patterns for the staggered (dark grey) and eclipsed models (light grey) for COF-66. Experimental diffraction pattern was overlaid (black) .
[0038] Figure 7 shows solid-state 13C NMR spectrum for TAPP.
[0039] Figure 8A-B shows (A) solid-state 13C NMR spectrum for
COF-366, and (B) the COF-366 structure with the carbons labeled to match the 1C NMR spectrum.
[0040] Figure 9 shows Solid-state 13C NMR spectrum for TBPP.
[0041] Figure 10A-B shows (A) solid-state 1 C NMR spectrum for
COF-66, and (B) the COF-66 structure with the carbons labeled to match the 13C NMR spectrum.
[0042] Figure 11 shows the nB MAS NMR spectrum for TBPP.
[0043] Figure 12 shows the nB MAS NMR spectrum for COF-66
[0044] Figure 13 shows an SEM image of COF-366.
[0045] Figure 14 shows an SEM image of COF-66.
[0046] Figure 15 shows a TGA trace for an activated sample of
COF-366. [0047] Figure 16 shows a TGA trace for an activated sample of
COF-66.
[0048] Figure 17 shows I-V profiles of a 2 um width Au gap with
COF-366 (light grey) and COF-66 (medium grey). Inset: Gold electrode used for conductivity measurements.
[0049] Figure 18 shows Argon adsorption isotherm for COF-366 measured at 87 K.
[0050] Figure 19 shows Argon adsorption isotherm for COF-66 measured at 87 K.
[0051] Figure 20 shows Ar adsorption isotherm at 87 K for COF-
366, comparison between experimental (circles) and NLDFT isotherm (grey line) .
[0052] Figure 21 shows Pore size distribution for COF-366, calculated from a NLDFT fit to the Ar adsorption data for COF-366 in Figure 20.
[0053] Figure 22 shows Ar adsorption isotherm at 87 K for COF-
66, comparison between experimental (circles) and NLDFT isotherm (grey line ) .
[0054] Figure 23 shows Pore size distribution for COF-66, calculated from a NLDFT fit to the Ar adsorption data for COF-66 in Figure 22.
[0055] Figure 24A-B shows UV-Vis diffuse reflectance spectra
(Kubela-Munk spectrum) indicate that the porphyrin units in both (a) COF-366 (light grey), TAPP (dark grey), TAPP solution in DMF (black) and (b) COF-66 (light grey), TBPP solid (dark grey), TBPP solution in DMF (black) are H-aggregate.
[0056] Figure 25 shows the Fluorescence Spectra of (a) COF-366
(dashed line) and (b) COF-66 (solid line) upon excitation at 280 nm at 25 °C.
[0057] Figure 26 shows FP-TRMC profiles of COF-366 (light grey) and COF-66 (dark grey) at 25 °C on irradiation with a 355-nm pulse laser with different photon densities: 3.6 x 1016, 2.7 X 1016, 1.8 x 1016, 9.1 X 1015, 6.4 x 1015, 4.6 X 1015, and 1.8 x 1015 photons cm"2, respectively. The Φ∑μ values were almost constant when the photon density decreased to the level of 1015 photons cm"2.
[0058] Figure 27 shows Kinetic traces of transient
photoabsorption observed for COF-366 and COF-66 bound in PMMA matrix (COF: PMMA = 2:3 w/w) upon exposure to the 355-nm line of Nd: YAG laser (2.7 1016 cm"2). The light grey, dark grey, medium grey, and black lines are the decays at 460 and 540 nm of COF-66, 440 and 510 nm of COF-366, respectively. These graphs show that the kinetic traces of transient photo-absorption demonstrate almost identical decay constants for both bleaching and absorption processes .
[0059] Figure 28 shows transient photoabsorption spectra at the end-of-pulse observed for COF-366 (light grey) and COF-66 (dark grey) bound in PMMA matrix (COF: PMMA = 2:3 w/w) upon exposure to the 355-nm line of Nd: YAG laser (2.7 1016 cm"2) . The light grey and dark grey lines are the COF-366 and COF-66, respectively. This figure indicates the new absorption band around 540 and 510 nm (for COF-66 and COF-366, respectively) in the transient spectra is originated by the formation of radical cations of porphyrin units.
[0060] Figure 29A-B shows normalized FP-TRMC transients observed for (a) COF-66 and (b) COF-366 bound in PMMA matrix (COF: PMMA = 2:3 w/w) upon exposure to the 355-nm line of Nd: YAG laser with changing the excitation power from 0.64 (light/medium grey), 0.91 (dark grey), 1.8 (medium grey), 2.7 (black), and 3.6 (light grey) 1016 cm"2.
[0061] Figure 30A-D shows normalized decays of FP-TRMC transient (light grey) and TAS signal (dark grey) at 440 nm observed for (a, b) COF-66 and (c, d) COF-366 bound in PMMA matrix (COF: PMMA = 2:3, w/w) upon exposure to the 355-nm line of Nd: YAG laser (2.7 1016 cm"2). Figure 30 (a, c) indicates that the transients show good agreement with each other in the shorter time region; therefore, it is possible to obtain the 'pure' conductivity values in this region by subtracting the contribution from the thermal effect. Figure 30 (b, d) shows the deviation in the two transient curves, especially in the longer time region.
[0062] Figure 31A-C shows current transients observed under the positive bias mode at a variety of electric field strengths in the TOF measurement for (a) COF-66 and (b) COF-366. Excitation was carried out at 355 nm, 9.1 x 1015 photons cm"2; (c) The linear plot of current transients under positive and negative bias modes at 1.1 x 10" V-cm"1 for COF-66. [0063] Figure 32 shows dependence of hole drift mobility on applied electric field strength observed in a COF-66 film.
[0064] Figure 33 shows correlation between the values of electric conductivity estimated by the non-contact microwave conductivity measurement and the conventional four-contacts/Hall effect measurement techniques in inorganic electric semi-conducting or conducting materials of Si (squares), 1O2 (circles), and Sn(_>2 (solid circles) with a variety of dopant concentrations.
DETAILED DESCRIPTION
[0065] As used herein and in the appended claims, the singular forms "a," "and," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a pore" includes a plurality of such pores and reference to "the pore" includes reference to one or more pores, and so forth.
[0066] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood to one of ordinary skill in the art to which this disclosure belongs. Although methods and materials similar or equivalent to those described herein can be used in the practice of the disclosed methods and compositions, the exemplary methods, devices and materials are described herein.
[0067] All publications mentioned herein are incorporated herein by reference in full for the purpose of describing and disclosing the methodologies, which are described in the publications, which might be used in connection with the description herein. The publications discussed above and throughout the text are provided solely for their disclosure prior to the filing date of the present application. Nothing herein is to be construed as an admission that the inventors are not entitled to antedate such disclosure by virtue of prior disclosure. Moreover, with respect to similar or identical terms found in the incorporated references and terms expressly defined in this disclosure, the term definitions provided in this disclosure will control in all respects.
[0068] Conductive organic materials are highly valued due to their electronic and optoelectronic properties, low cost, low molecular weight, and the relative ease in which they can be fabricated. The flexibility of the structures has also opened up new applications, such as flexible displays. It is widely believed that strong cofacial interaction between polymer chains allows charge carriers to be easily transported from one chain to another. However, linear polymers have only confined lateral overlap, and materials with large intermolecular conduction cross-section have so far remained a challenge to fabricate.
[ 0069 ] The disclosure provides covalent organic frameworks
(COFs) with structures based on covalently linked porphyrin ring units to give sheets in which the porphyrin ring units are stacked laterally to give an efficient conducting interface. Exemplified herein, are two porphyrin ring COFs (COF-66 and COF-366) that were found to have hole conducting mobilities as high as 8.1 and 3.0 cm2 V_1s_1. COF-66, COF-366 and other similar multifunctional conducting COFs, combine thermal stability with high charge mobility and pore accessibility. COF-66 and COF-366 were the first COFs to exhibit such properties, and therefore they provide an important step towards the manufacture of plastic electronics and optoelectronics.
[ 0070 ] A crucial characteristic of a semiconductor is the ability to control its electrical conductance. The most important conductive property characterizing the charge transport ability is the charge carrier mobility (μ) . Highly crystalline structures that have close interactions between segments are required in order to enhance the charge carrier mobility of organic semiconductors.
Unlike one-dimensional polymers which usually exhibit small and limited overlap between 'slim' backbones even in the face-to-face stacking mode, two-dimensional flat sheet structures provide an ideal morphology to maximize intermolecular interactions. This is especially the case when all the atoms of one sheet are
superimposeable with the atoms of the neighboring sheet. Such assemblages provide a broad path for charge carriers moving from one sheet to another, thereby enabling the eclipsed integration of n-electronic components into a well-defined 2D layered framework.
[0071 ] COFs are a class of porous crystalline materials that are constructed by linking secondary building units (SBUs) by covalent bonds to produce predetermined structures. According to reticular chemistry principles, the geometrical features of the SBUs determine the topology of the frameworks. Within the COF class of materials, depending on the degree of connectivity and geometry of the selected organic building units, both 3D structures and 2D layered materials can be prepared. By stacking the organic layers of 2D COFs, materials with attractive properties have been prepared. These materials feature a variety of pore sizes and high surface area. Moreover, these materials were found to adsorb gases when they were tested with H2 and NH3. Remarkably, the interlayer distances in these 2D structures were shorter than would be predicted, which would suggest interactions with the aromatic systems between the layers. A 2D COF with an extended π-conjugated system that has short interlayer distances could be expected to exhibit electronic interactions between the separated sheets.
These COFs, therefore, could potentially be good conductors.
[ 0072 ] The disclosure provides extended π-conjugated 2D COFs that would allow for close packing of the separated sheets so as to allow for electronic interactions between the separated sheets. By utilizing porphyrin units, two novel COFs (COF-366 and COF-66) were fabricated that exhibited the highest charge carrier mobility, among known organic conducting polymers.
[ 0073 ] Covalently linked organic networks differ from existing cross-linked polymers and other polymeric materials whose
properties are a result of various processing techniques that take advantage of clearly defined molecular architectures that are intrinsic to the material. Accurate control over the position of selected organic units is required in order to allow for optimum exploitation of the material properties.
[ 0074 ] Existing crystalline covalently linked materials such as diamond, graphite, silicon carbide, carbon nitride, and boron nitride are formed under very high pressures (1-10 GPa) or very high temperatures (500-2400 °C) . These extreme synthetic conditions limit the flexibility needed in the formation of extended or functionalized structures, since the structural or chemical integrity of many organic monomer units is not preserved under these conditions.
[ 0075 ] In physical organic chemistry, synthesizing covalent networks under mild conditions that allows for periodic molecular structures but with long-range order has been problematic in the field for many years. Many attempts to solve this problem revolved around pre-organizing organic moieties via hydrogen bonding or metal-ligand interactions and then diffusing reactive non-metallic cross-linking agents into the channels. After these organic moieties were linked, the linking agents were removed. While forming covalent networks under mild conditions, these networks commonly suffered from incomplete polymerization or loss of crystallinity upon removal of the cross-linking or templating metal agents. The disclosure provided herein solves this long-standing problem by presenting covalent organic frameworks (COFs) in which the building blocks are linked by strong covalent bonds (C-C, C-O, B-O) . The methods disclosed herein, indicate that while
problematic, it is possible to overcome the long standing
"crystallization problem" for covalently linked solids. The disclosure provides successful crystallization methods where a balance between the kinetic and thermodynamic factors can be reached so that reversible covalent bond formation is stabilized, a requirement for extended organic crystal structures. The disclosed COF structures contain light elements (B, C, N, and 0) which provide advantages over other similar materials; in that these light element containing materials combine the thermodynamic strength of a covalent bond, as seen in diamond and boron carbides, with the functionality of organic units.
[ 0076 ] Solving the practical and conceptual challenges of synthesizing covalent networks under mild conditions that allows for periodic molecular structures but with long-range order has been extremely challenging and elusive. Firstly, unlike 0-D and 1-D systems, the insolubility of 2-D and 3-D structures precludes the use of step-wise synthesis, making their isolation in crystalline form very difficult. Secondly, the number of possible structures that may result from linking specific building unit geometries into 2-D or 3-D extended structures is essentially infinite,
complicating their synthesis by design. While presenting a challenging synthesis problem, the expected properties of these materials: lightweight, inexpensive starting materials, and potentially high chemical and thermal stabilities would meet long felt needs in the physical chemical industry, such as environmentally friendly conductors for electronic devices, that are not being filled by alternative materials. These industry needs could only be met by employing specific organic units in a periodic array at the molecular scale, where one could specifically tailor structure, functionality, and material properties of these arrays in order to fulfill the particular requirements of the industrial application. In order to perform such applications, would require that the networks be synthesized under mild conditions so as not to destroy the structural or physical functionality of the building blocks in these extended networks.
[0077 ] Covalent organic frameworks of the disclosure are based, in part, by choosing certain building blocks and by using
reversible condensation reactions to crystallize 2-D and 3-D COFs, wherein the building blocks are linked by covalent bonds. In addition, the disclosure demonstrates the usefulness of reticular chemistry. The novel COFs disclosed herein, which solved the "crystallization problem," were designed using reticular chemistry principles. For example, using reticular chemistry, nets were developed by linking different cores. The different cores can each be linked to a different number of additional cores (e.g., 2, 3, 4 or more) through a linking moiety. Each net can then be further linked to any number of additional nets.
[0078] Accordingly, the disclosure provides novel two- and three-dimensional covalent organic frameworks (3-D COFs)
synthesized from molecular building blocks using concepts of reticular chemistry. For example, two nets based on triangular and tetrahedral cores, ctn and bor, were targeted and their respective 3-D COFs synthesized as crystalline solids by condensation reactions .
[0079] A covalent organic framework ("COF") refers to a two- or three-dimensional network of covalently bonded cores, wherein the cores are bonded to one another through one or more linking moieties. In one aspect a COF comprises two or more networks covalently bonded to one another. The networks may be comprised of a single type of core structure. The networks alternatively may be comprised of one or more different type of core structures.
Moreover, the networks may be comprised of a single type of linking moiety. The networks alternatively may be comprised of one or more different types of linking moieties. These COFs are extended in the same sense that polymers are extended.
[ 0080 ] The term "covalent organic network" refers collectively to both covalent organic frameworks and to covalent organic polyhedra .
[ 0081 ] The term "covalent organic polyhedra" refers to a non- extended covalent organic network. Polymerization in such polyhedra does not occur usually because of the presence of. capping ligands that inhibit polymerization. Covalent organic polyhedra are covalent organic networks that comprise cores that are linked to each other by one or more linking moieties so that the spatial structure of the network is a polyhedron. Typically, the polyhedra of this variation are 2 or 3 dimensional structures.
[ 0082 ] A "linking cluster" refers to one or more functional groups that are capable of undergoing reactions with functional groups and/or linking clusters found on another structure so as to form one or more covalent bonds connecting the two or more structures together so as to form a larger linked and/or fused structure. This fused structure may be linked and/or fused with additional structures through additional linking clusters so as to ultimately form 2D or 3D covalent organic frameworks. Any number of reaction mechanisms may be used in forming the one or more covalent bonds between the two or more structures, including, but not limited to, condensation, radical, unimolecular substitution ( SN 1 ) , bimolecular substitution ( SN 2 ) , nucleophilic aromatic substitution (SN Ar), unimolecular elimination (El), bimolecular elimination (E2), E1CB elimination, pericyclic, electrocylic, sigmatropic rearrangements, cycl'oaddition, and electrophilic aromatic substitution. Typically, the linking cluster is
covalently bonded to one or more other linking clusters or functional groups through a condensation reaction.
[ 0083 ] The term "alkyl" refers to an alkyl group that contains 1 to 30 carbon atoms. Where if there is more than 1 carbon, the carbons may be connected in a linear manner, or alternatively if there are more than 2 carbons then the carbons may also be linked in a branched fashion so that the parent chain contains one or more secondary, tertiary, or quaternary carbons. An alkyl may be substituted or unsubstituted, unless stated otherwise.
[0084 ] The term "alkenyl" refers to an alkenyl group that contains 1 to 30 carbon atoms. While a Cx.alkenyl can form a double bond to a carbon of a parent chain, an alkenyl group of three or more carbons can contain more than one double bond. It certain instances the alkenyl group will be conjugated, in other cases an alkenyl group will not be conjugated, and yet other cases the alkenyl group may have stretches of conjugation and stretches of nonconjugation . Additionally, if there is more than 1 carbon, the carbons may be connected in a linear manner, or alternatively if there are more than 3 carbons then the carbons may al'so be linked in a branched fashion so that the parent chain contains one or more secondary, tertiary, or quaternary carbons. An alkenyl may be substituted or unsubstituted, unless stated otherwise.
[0085] The term "alkynyl" refers to an alkynyl group that contains 1 to 30 carbon atoms. While a Ci-alkynyl can form a triple bond to a carbon of a parent chain, an alkynyl group of three or more carbons can contain more than one triple bond. Where if there is more than 1 carbon, the carbons may be connected in a linear manner, or alternatively if there are more than 4 carbons then the carbons may also be linked in a branched fashion so that the parent chain contains one or more secondary, tertiary, or quaternary carbons. An alkynyl may be substituted or unsubstituted, unless stated otherwise.
[0086] The term "cylcloalkyl " refers to an alkyl that contains at least 3 carbon atoms but no more than 12 carbon atoms connected so that it forms a ring. A "cycloalkyl" for the purposes of this disclosure encompass from 1 to 7 cycloalkyl rings, wherein when the cycloalkyl is greater than 1 ring, then the cycloalkyl rings are joined so that they are linked, fused, or a combination thereof. A cycloalkyl may be substituted or unsubstituted, or in the case of more than one cycloalkyl ring, one or more rings may be
unsubstitued, one or more rings may be substituted, or a
combination thereof.
[0087] The term "aryl" refers to a conjugated planar ring system with delocalized pi electron clouds that contain only carbon as ring atoms. An "aryl" for the purposes of this disclosure encompass from 1 to 7 aryl rings wherein when the aryl is greater than 1 ring the aryl rings are joined so that they are linked, fused, or a combination thereof. An aryl may be substituted or unsubstituted, or in the case of more than one aryl ring, one or more rings may be unsubstituted, one or more rings may be
substituted, or a combination thereof.
[0088 ] The term "heterocycie" refers to ring structures that contain at least 1 noncarbon ring atom. A "heterocycie" for the purposes of this disclosure encompass from 1 to 7 heterocycie rings wherein when the heterocycie is greater than 1 ring the heterocycie rings are joined so that they are linked, fused, or a combination thereof. A heterocycie may be aromatic or nonaromatic, or in the case of more than one heterocycie ring, one or more rings may be nonaromatic, one or more rings may be aromatic, or a combination thereof. A heterocycie may be substituted or unsubstituted, or in the case of more than one heterocycie ring one or more rings may be unsubstituted, one or more rings may be substituted, or a
combination thereof. Typically, the noncarbon ring atom is either N, 0, S, Si, Al, B, or P. In case where there is more than one noncarbon ring atom, these noncarbon ring atoms can either be the same element, or combination of different elements, such as N and O. Examples of heterocycles include, but are not limited to: a monocyclic heterocycie such as, aziridine, oxirane, thiirane, azetidine, oxetane, thietane, pyrrolidine, pyrroline,
imidazolidine, pyrazolidine, pyrazoline, dioxolane, sulfolane 2,3- dihydrofuran, 2 , 5-dihydrofuran tetrahydrofuran, thiophane, piperidine, 1, 2, 3, 6-tetrahydro-pyridine, piperazine, morpholine, thiomorpholine, pyran, thiopyran, 2 , 3-dihydropyran,
tetrahydropyran, 1, -dihydropyridine, 1,4-dioxane, 1,3-dioxane, dioxane, homopiperidine , 2 , 3 , 4 , 7-tetrahydro-lH-azepine
homopiperazine, 1 , 3-dioxepane, 4 , 7-dihydro-l , 3-dioxepin, and hexamethylene oxide; and polycyclic heterocycles such as, indole, indoline, isoindoline, quinoline, tetrahydroquinoline,
isoquinoline , tetrahydroisoquinoline, 1, 4-benzodioxan, coumarin, dihydrocoumarin, benzofuran, 2 , 3-dihydrobenzofuran, isobenzofuran, chromene, chroman, isochroman, xanthene, phenoxathiin, thianthrene, indolizine, isoindole, indazole, purine, phthalazine,
naphthyridine, quinoxaline, quinazoline, cinnoline, pteridine, phenanthridine, perimidine, phenanthroline, phenazine,
phenothiazine, phenoxazine, 1, 2-benzisoxazole, benzothiophene , benzoxazole, benzthiazole, benzimidazole , benztriazole,
thioxanthine, carbazole, carboline, acridine, pyrolizidine, and quinolizidine . In addition to the polycyclic heterocycles described above, heterocycle includes polycyclic heterocycles wherein the ring fusion between two or more rings includes more than one bond common to both rings and more than two atoms common to both rings. Examples of such bridged heterocycles include quinuclidine, diazabicyclo [ 2.2.1 ] heptane and 7-oxabicyclo [2.2.1] heptane .
[0089 ] The terms "heterocyclic group", "heterocyclic moiety", "heterocyclic", or "heterocyclo" used alone or as a suffix or prefix, refers to a heterocycle that has had one or more hydrogens removed therefrom.
[0090 ] The term "heterocyclyl " used alone or as a suffix or prefix, refers a monovalent radical derived from a heterocycle by removing one hydrogen therefrom. Heterocyclyl includes, for example, monocyclic heterocyclyls, such as, aziridinyl, oxiranyl, thiiranyl, azetidinyl, oxetanyl, thietanyl, pyrrolidinyl ,
pyrrolinyl, imidazolidinyl , pyrazolidinyl , pyrazolinyl, dioxolanyl, sulfolanyl, 2 , 3-dihydrofuranyl , 2 , 5-dihydrofuranyl ,
tetrahydrofuranyl , thiophanyl, piperidinyl, 1 , 2 , 3, 6-tetrahydro- pyridinyl, piperazinyl, morpholinyl, thiomorpholinyl , pyranyl, thiopyranyl, 2 , 3-dihydropyranyl , tetrahydropyranyl , 1,4- dihydropyridinyl , 1 , 4 -dioxanyl , 1 , 3-dioxanyl , dioxanyl,
homopiperidinyl , 2,3,4, -tetrahydro-lH-azepinyl, homopiperazinyl , 1, 3-dioxepanyl, 4 , 7-dihydro-l , 3-dioxepinyl , and hexamethylene oxidyl . In addition, heterocyclyl includes aromatic heterocyclyls or heteroaryl, for example, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, thienyl, furyl, furazanyl, pyrrolyl, imidazolyl, thiazolyl, oxazolyl, pyrazolyl, isothiazolyl , isoxazolyl, 1,2,3- triazolyl, tetrazolyl, 1 , 2 , 3-thiadiazolyl , 1 , 2 , 3-oxadiazolyl , 1, 2, 4-triazolyl, 1 , 2 , 4-thiadiazolyl , 1, 2, 4-oxadiazolyl, 1,3,4- triazolyl, 1, 3, -thiadiazolyl, and 1,3,4 oxadiazolyl. Additionally, heterocyclyl encompasses polycyclic heterocyclyls (including both aromatic or non-aromatic), for example, indolyl, indolinyl, isoindolinyl , quinolinyl, tetrahydroquinolinyl , isoquinolinyl , tetrahydroisoquinolinyl , 1 , 4-benzodioxanyl , coumarinyl,
dihydrocoumarinyl , benzofuranyl , 2 , 3-dihydrobenzofuranyl ,
isobenzofuranyl , chromenyl, chromanyl, isochromanyl , xanthenyl, phenoxathiinyl , thianthrenyl , indolizinyl, isoindolyl, indazolyl, purinyl, phthalazinyl , naphthyridinyl , quinoxalinyl , quinazolinyl , cinnolinyl, pteridinyl, phenanthridinyl , perimidinyl,
phenanthrolinyl , phenazinyl, phenothiazinyl , phenoxazinyl , 1,2- benzisoxazolyl , benzothiophenyl , benzoxazolyl , benzthiazolyl , benzimidazolyl , benztriazolyl , thioxanthinyl , carbazolyl,
carbolinyl, acridinyl, pyrolizidinyl, and quinoli zidinyl . In addition to the polycyclic heterocyclyls described above,
heterocyclyl includes polycyclic heterocyclyls wherein the ring fusion between two or more rings includes more than one bond common to both rings and more than two atoms common to both rings.
Examples of such bridged heterocycles include, but is not limited to, quinuclidinyl , diazabicyclo [ 2.2.1 ] heptyl ; and 7- oxabicyclo [2.2.1] heptyl .
[0091] The term "hetero-aryl " used alone or as a suffix or prefix, refers to a heterocyclyl having aromatic character. Examples of heteroaryls include, but is not limited to, pyridine, pyrazine, pyrimidine, pyridazine, thiophene, furan, furazan, pyrrole, imidazole, thiazole, oxazole, pyrazole, isothiazole, isoxazole,
1.2.3-triazole, tetrazole, 1 , 2 , 3-thiadiazole , 1 , 2 , 3-oxadiazole,
1.2. -triazole, 1 , 2 , 4-thiadiazole, 1, 2, 4-oxadiazole, 1,3,4- triazole, 1, 3, -thiadiazole, and 1 , 3 , -oxadiazole .
[0092] The term "hetero-" when used as a prefix, such as, hetero- alkyl, hetero-alkenyl , hetero-alkynyl , or hetero-hydrocarbon, for the purpose of this disclosure refers to the specified hydrocarbon having one or more carbon atoms replaced by non-carbon atoms as part of the parent chain. Examples of such noncarbon atoms include, but are not limited to, N, O, S, Si, Al, B, and P. If there is more than one noncarbon atom in the hetero-hydrocarbon chain then this atom may be the same element or may be a combination of different elements, such as N and O. [ 0093] The term "unsubstituted" with respect to hydrocarbons, heterocycles, and the like, refers to structures wherein the parent chain contains no substituents .
[ 0094 ] The term "substituted" with respect to hydrocarbons, heterocycles, and the like, refers to structures wherein the parent chain contains one or more substituents.
[ 0095 ] The term "substituent" refers to an atom or group of atoms substituted in place of a hydrogen atom. For purposes of this disclosure, a substituent would include deuterium atoms.
[ 0096 ] The term "hydrocarbons" refers to groups of atoms that contain only carbon and hydrogen. Examples of hydrocarbons that can be used in this disclosure include, but are not limited to, alkanes, alkenes, alkynes, aryls, and benzyls.
[ 0097 ] The term "functional group" or " FG" refers to specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules. While the same functional group will undergo the same or similar chemical reaction (s) regardless of the size of the molecule it is a part of, its relative reactivity can be modified by nearby functional groups. The atoms of functional groups are linked to each other and to the rest of the molecule by covalent bonds. Examples of FG that can be used in this disclosure, include, but are not limited to, substituted or unsubstituted alkyls, substituted or
unsubstituted alkenyls, substituted or unsubstituted alkynyls, substituted or unsubstituted aryls, substituted or unsubstituted hetero-alkyls, substituted or unsubstituted hetero-alkenyls, substituted or unsubstituted hetero-alkynyls, substituted or unsubstituted hetero-aryls, substituted or unsubstituted
heterocycles, halos, haloformyls, oxgen containing groups (e.g. hydroxyls, anhydrides, carbonyls, carboxyls, carbonates,
carboxylates, aldehydes, esters, hydroperoxy, peroxy, ethers, and orthoesters ) , nitrogen-containing groups (e.g. carboxamides, amines, imines, imides, azides, azos, cyanates, isocyanates, nitrates, nitriles, isonitriles, nitrosos, nitros, nitrosooxy) , sulfur-containing groups (sulfhydryls, sulfides, disulfides, sulfinyls, sulfos, thiocyanates, isothiocyanates , and
carbonothioyls) , phosphorous-containing groups (e.g. phosphinos, phosphonos, and phosphates), silicon-containing groups (Si(OH)3, Si(SH)4, silanes, silyls, and siloxanes) , boron containing groups (e.g. boronic acid, boronic esters, and boronic ethers), and metal or metalloid-containing groups (e.g. Ge(OH)3, Ge(SH)4, As03H, As0H, As(SH)3, Sn(OH)3, Sn(CH3)3, and Sn(Bu)3).
[0098] As used herein, a wavy line intersecting another line in a chemical formula where this line is connected to an atom on one end and nothing on the other end indicates that this atom is covalently bonded to another atom that is present but not being shown.
[0099] A bond that is represented by a straight line and a dashed line indicates that this bond can be a single covalent bond or alternatively a doubly covalent bond.
[00100] A "core" refers to an organic compound which can form one or more covalent bonds with a linking moiety through a linking cluster. Generally, a core comprises a substantially planar parent chain that is comprised mainly of aryls, heterocylces ,
heteroalkenyls , heteroalkynyls or a combination thereof; wherein the parent chain may be unsubstituted or substituted with one or more functional groups, including substituted or unsubstituted hydrocarbons, heterocycles , or a combination thereof; and wherein the core can form one or more covalent bonds with one or more linking clusters of one or more linking moieties. Typically cores are planar conjugated structures that contain from two to eight aryls, aromatic heterocycles, or combination thereof. Examples of core stuctures include, but are not limited to, porphyrin, porphyrin analogs, corrinoid, corrinoid analogs, naphthalene, naphthalene analogs, anthracene, anthracene analogs, phenathrene, phenathrene analogs, pyrene, pyrene analogs, linked 2 to 8 aryl rings, linked 2 to 8 aromatic heterocyle rings, fused 2 to 8 aryl and aromatic heterocycle rings, and linked 2 to 8 aryl and aromatic heterocycle rings.
[00101 ] A "linking moiety" refers to an organic compound which can form one or more covalent bonds with a core through a linking cluster. Generally, a linking moiety comprises a parent chain of a hydrocarbon, hetero-alkane, hetero-alkene, hetero-alkyne, or heterocycles; where this parent chain may be substituted with one or more functional groups, including additional substituted or unsubstituted hydrocarbons, and heterocycles , or a combination thereof; and wherein the linking moiety contains at least one linking cluster. In the case of heterocycles, hetero-alkanes , hetero-alkenes, and hetero-alkynes, one or more heteroatoms can function as a linking cluster. Examples of such heteroatoms include, but are not limited to, nitrogen, oxygen, sulfur, boron, phosphorus, silicon or aluminum atoms making up the ring. Moreover, a heterocycle, hetero-alkane, hetero-alkene , or hetero-alkyne, can also be functionalized with one or more linking clusters. Moreover, a heterocycle, hetero-alkane, hetero-alkene, or hetero-alkyne, can also be functionalized with one or more ligands to add or increase denticity of the hetero-based parent chain. In the case of hydrocarbons, typically one or more of the linking clusters of the hydrocarbon-based linking moiety can arise from functionalizing the hydrocarbon parent chain with one or more functional groups that can then act as a linking cluster. Examples of such groups, include, but are not limited to, carboxylic acids, hydroxyls, amines, imines, thiols, phosphines, ketones, aldehydes, halides, cyanos, boronic acid and nitros. In certain cases, portions of a hydrocarbon itself can function as a linking cluster, for example by forming carbenes and carbocations . It is also well known that functional groups that can be linking clusters that are also Lewis bases, have lone pair electrons available and/or can be
deprotonated to form stronger Lewis bases. The deprotonated version of these linking clusters, therefore, are encompassed by disclosure and anywhere a ligand that is depicted in a non- deprotenated form, the deprotenated form should be presumed to be included, unless stated otherwise. For example, although the structural Formulas presented herein are illustrated as having carboxylic acid ligands, for the purposes of this disclosure, those illustrated structures should be interpreted as including both carboxylic acid and/or carboxylate ligands.
[ 00102 ] The term "post framework reactants" refers to all known substances that are directly involved in a chemical reaction. Post framework reactants typically are substances, either elemental or compounds, which have not reached the optimum number of electrons in their outer valence levels and/or have not reached the most favorable energetic state due to ring strain, bond length, low bond dissociation energy, and the like. Some examples of post framework reactants include, but are not limited to:
Figure imgf000035_0001
, I-R, Br-R, CR3-Mg-Br, CH2R-Li, CR3, Na-R, and K-R; and wherein each R is independently selected from the group comprising: H, sulfonates, tosylates, azides, triflates, ylides, alkyl, aryl, OH, alkoxy, alkenes, alkynes, phenyl and substitutions of the foregoing, sulfur-containing groups (e.g., thioalkoxy, thionyl chloride) , silicon-containing groups, nitrogen-containing groups (e.g., amides and amines), oxygen-containing groups (e.g., ketones, carbonates, aldehydes, esters, ethers, and anhydrides), halogen, nitro, nitrile, nitrate, nitroso, amino, cyano, ureas, boron- containing groups (e.g., sodium borohydride, and catecholborane) , phosphorus-containing groups (e.g., phosphorous tribromide) , and aluminum-containing groups (e.g., lithium aluminum hydride) .
[00103 ] The disclosure provides covalently linked organic networks of any number of net structures (e.g., frameworks) . The covalently linked organic network comprises a plurality of -cores wherein at least two cores contain one or more linking clusters capable of forming one or more covalent bonds with one or more linking clusters of one or more linking moieties. The cores are linked to- one another by at least one linking moiety. Variations of the covalently linked organic networks (both the frameworks and polyhedra) can provide surface areas from about 1 to about 20,000 m2/g or more, typically about 2000 to about 18,000 m2/g, but more commonly about 3,000 to about 6,000 m2/g.
[00104 ] Typically each core is linked to at least one, typically two, distinct cores through one or more linking moieties. In a variation of this embodiment, the covalently linked organic networks are COFs that have extended structures. In a further refinement these COFs are crystalline materials that may be either polycrystalline or even single crystals. The cores may be the same throughout the net (i.e., a homogenous net) or may be different or alternating types of cores (i.e., a heterogeneous net). Since the COFs are extended structures, variations may form into analogous nets to the nets found in metallic organic frameworks as described in Reticular Chemistry: Occurrence and Taxonomy of Nets and Grammar for the Design of Frameworks, Acc. Chem. Res. 2005, 38, 176-182. The entire disclosure of this article is hereby incorporated by reference.
[00105 ] In an embodiment, a COF disclosed herein is generated from cores that have the same structure. In another embodiment, a COF disclosed herein is generated from at least two cores that have a different structure.
[00106] In a further embodiment, a COF disclosed herein is generated from one or more cores comprised of fused aryl rings. In a certain embodiment, a COF disclosed herein is generated from one or more cores comprised of fused aromatic heterocycles. In yet a further embodiment, a COF disclosed herein is generated from one or more cores comprised of fused aryl and aromatic heterocycle rings. In another embodiment, a COF disclosed herein is generated from one or more cores that have a porphyrin or porphyrin analog based structure .
[00107 ] In a certain embodiment, a COF disclosed herein is generated from one or more cores that have a structure selected
V:
Figure imgf000036_0001
(I) ( I D
Figure imgf000037_0001
, and
Figure imgf000037_0002
(V)
wherein :
R^R59 are independently selected from the group comprising H, D, FG, (Ci-C20) alkyl, substituted (C1-C20)alkyl, (Ci-C20) alkenyl, substituted (C1-C20) alkenyl, (C1-C20) alkynyl, substituted (Ci- C20) alkynyl, hetero- (C1-C20) alkyl , substituted hetero- (Ci-C20) alkyl, hetero- (Cx-C2o) alkenyl, substituted hetero- (Ci-C20) alkenyl, hetero- (C1-C20) alkynyl, substituted hetero- (Ci-C20) alkynyl , (Ci~
C20) cycloalkyl, substituted (Ci-C20) cycloalkyl, aryl, substituted aryl, heterocycle, substituted heterocycle, wherein R5 and R6 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and
heterocycle, wherein R7 and R8 are linked together to form a substituted or^unsubstituted ring selected from the group comprising cycloalkyl, aryl and heterocycle, wherein R9 and R10 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and
heterocycle, and wherein R11 and R12 are linked together to form a substituted or unsubstituted ring selected from the group
comprising cycloalkyl, aryl and heterocycle;
X^X13 are independently selected from the group comprising carbon, oxygen, sulfur, silicon, phosphorous, and nitrogen;
Yx-Y7 are independently selected from the group comprising H, D, and FG;
A1-A21 are independently selected from the group comprising C, N, Si or P;
with the proviso that a X may not exceed its maximum valence by binding a Y, or R1-R4; and
with the proviso that a A may not exceed its maximum valence by binding a R.
[00108 ] In another embodiment, a COF disclosed herein is generated from one or more cores that have a structure of Formula I :
Figure imgf000038_0001
(I)
wherein,
R1-R12 are independently selected from the group comprising H, D, FG, (Ci-C6) alkyl, substituted (Ci- C6)alkyl, (Ci-C6) alkenyl , substituted (Cj-Cg) alkenyl, (0χ-06) alkynyl, substituted (Ci~
C6)alkynyl, hetero- (Ci-C6) alkyl, substituted hetero- (Ci-C6) alkyl, hetero- (Ci-C6) alkenyl, substituted hetero- (Ci-C6) alkenyl, hetero- (Ci- C6)alkynyl, substituted hetero- (Ci-C6) alkynyl, (Ci-C6) cycloalkyl, substituted (Ci-C6) cycloalkyl, aryl, substituted aryl, heterocycle, substituted heterocycle, wherein R5 and R6 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and heterocycle, wherein R7 and R8 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and
heterocycle, wherein R9 and R10 are linked together to form a substituted or unsubstituted ring selected from the group
comprising cycloalkyl, aryl and heterocycle, and wherein Ru and R12 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and
heterocycle;
X1-X8 are independently selected from the group comprising carbon or nitrogen;
Υ1-Υ" are independently selected from the group comprising H, D, FG; and
with the proviso that a X may not exceed its maximum valence by binding a Y, or R1-R4.
[00109 ] In a further embodiment, the covalent organic framework is generated from one or more cores of Formula I that have a structure of Formula la:
Figure imgf000040_0001
(la)
wherein,
R1-R12, R60-R19 are independently selected from the group comprising H, D, FG, (Ci-C6) alkyl , substituted (Ci~ C6)alkyl, (Ci- C6)alkenyl, substituted (Ci-C6) alkenyl, (d-C6) alkynyl, substituted (Ci-C6) alkynyl, hetero- (Ci-C6) alkyl , substituted hetero- (Ci-C6) alkyl , hetero- (Ci~C6) alkenyl, substituted hetero- (Ci-C6) alkenyl , hetero- (Ci- C6) alkynyl, substituted hetero- (Ci-C6) alkynyl , (Ci-C6) cycloalkyl, substituted (Ci-C6) cycloalkyl, aryl, substituted aryl, heterocycle, substituted heterocycle, wherein R5 and R6 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and heterocycle, wherein R7 and R8 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and
heterocycle, wherein R9 and R10 are linked together to form a substituted or unsubstituted ring selected from the group
comprising cycloalkyl, aryl and heterocycle, and wherein Ru and R12 are linked together to form a substituted or unsubstituted ring selected from the group comprising cycloalkyl, aryl and heterocycle
[00110] In further embodiment, the covalent organic framework is generated from one or more cores of Formula la:
Figure imgf000041_0001
(la)
wherein,
R1_R12; R60_R61f R63_R66( R68_R71f R73_R76f R78_r79 a∑Q H_
R62, R67, R72, and R77 are FG.
[00111] In a certain embodiment, a COF disclosed herein is generated from one or more cores of Formula I that have a structure of Formula lb:
Figure imgf000042_0001
wherein,
R1-R4, R80-R95 are independently selected from the group comprising H, D, FG, (Ci-C6) alkyl, substituted (Ci~ C6)alkyl, (Ci~ C6)alkenyl, substituted (Ci-C6) alkenyl , (Ci-C6) alkynyl , substituted (Ci-C6) alkynyl , hetero- (Ci-C6) alkyl , substituted hetero- (d-C6) alkyl , hetero- (Ci-C6) alkenyl , substituted hetero- (Ci-Ce) alkenyl , hetero- (Ci- C6) alkynyl, substituted hetero- (d-C6) alkynyl, (Ci-C6) cycloalkyl , substituted (C!-C6) cycloalkyl, aryl, substituted aryl, heterocycle, and substituted heterocycle;
X^X4 are independently selected from the group comprising carbon and nitrogen; and
with the proviso that a X may not exceed its maximum valence by binding a R.
[00112 ] In another embodiment, a core and/or linking moiety disclosed herein comprises a compound having structural Formula (ID :
Figure imgf000043_0001
( I D
wherein,
Ax-A9 are independently either C or N;
R13-R24 are independently selected from the group comprising H, D, FG, (Cx-C6) alkyl, substituted (Ci-C6) alkyl , (Ci-C6) alkenyl , substituted (d-C6) alkenyl, (Ci-C6) alkynyl, substituted (Ci~
C6)alkynyl, hetero- (C1-C5) alkyl, substituted hetero- (C1-C5) alkyl , hetero- (Ci-C5) alkenyl , substituted hetero- (C1-C5) alkenyl, hetero- (Ci- C5) alkynyl, substituted hetero- (C1-C5) alkynyl, (Cx-Ce) cycloalkyl, substituted (Ci-C8) cycloalkyl, aryl, substituted aryl, heterocycle, and substituted heterocycle; and
with the proviso that an A may not exceed its maximum valence by binding a R.
[ 00113 ] In a further embodiment, a core and/or linking moiety of Formula (II) has the structure:
Figure imgf000043_0002
[ 00114 ] In another embodiment, a core and/or linking moiety disclosed herein comprises a compound having structural Formula (III) :
Figure imgf000044_0001
(III)
wherein,
A10-A15 are independently either C or N;
R25_R34 are in<jepenclently selected from the group comprising H, D, FG, (Cx-Ce) alkyl, substituted (Ci-C6) alkyl , (C!-C6) alkenyl, substituted (Ci-C6) alkenyl , (C!-C6) alkynyl , substituted (Cx- C6)alkynyl, hetero- (C1-C5) alkyl , substituted hetero- (d-C5) alkyl , hetero- (C1-C5) alkenyl, substituted hetero- (Ct-Cs) alkenyl , hetero-(C!- C5) alkynyl, substituted hetero- (Ci~Cb) alkynyl , (Ci-C8) cycloalkyl , substituted (Ci-C8) cycloalkyl, aryl, substituted aryl, heterocycle, and substituted heterocycle; and
with the proviso that an A may not exceed its maximum valence by binding a R.
[00115] In a further embodiment, a core and/or linking moiety of Formula (III) has the structure selected from the group comprising:
Figure imgf000044_0002
[00116] In a further embodiment, a core and/or linking moiety disclosed herein comprises a compound having structural Formula (IV) :
Figure imgf000045_0001
( I V )
wherein,
A16-A21 are independently either C or N;
R35-R'!4 are independently selected from the group comprising H, D, FG, (Ci-C6) alkyl, substituted (Ci-C6) alkyl , (Ci-C6) alkenyl , substituted (Ci-C6) alkenyl, (Cx-Ce) alkynyl, substituted (Ci~
C6) alkynyl, hetero- (Ci-C5) alkyl, substituted hetero- (Ci~C5) alkyl , hetero- (Ci-C5) alkenyl , substituted hetero- (C1-C5) alkenyl , hetero- (Ci- C5) alkynyl, substituted hetero- (C1-C5) alkynyl, (Ci-C8 ) cycloalkyl , substituted (Ci-Ce) cycloalkyl , aryl, substituted aryl, heterocycle, and substituted heterocycle; and
with the proviso that an A may not exceed its maximum valence by binding a R.
[00117] In another embodiment, a core and/or linking moiety disclosed herein comprises a compound having structural Formula (V) :
Figure imgf000046_0001
(V)
wherein,
Χ914 are independently either C, N or P;
Y5-Y7 are independently either H, D, or FG;
A22-A27 are independently either C or N;
R 5-R59 are independently selected from the group comprising H, D, FG, (Ci-C6) alkyl, substituted (C!-C6) alkyl , (Ci-C6) alkenyl , substituted (d-C6) alkenyl, (Ci-Ce) alkynyl, substituted (Ci- C6) alkynyl, hetero- (C1-C5) alkyl , substituted hetero- (C1-C5) alkyl , hetero- (C1-C5) alkenyl , substituted hetero- (C1-C5) alkenyl , hetero- (Ci- C5) alkynyl, substituted, hetero- (C1-C5) alkynyl, (Ci-C8) cycloalkyl, substituted (Ci-C8) cycloalkyl, aryl, substituted aryl, heterocycle, and substituted heterocycle;
with the proviso that an A may not exceed its maximum valence by binding a R; and
with the proviso that an X.may not exceed its maximum valence by binding a Y.
[00118 ] In one embodiment, the linking moiety of the COF comprises an organic-based parent chain comprising alkyl, hetero-alkyl , alkenyl, hetero-alkenyl , alkynyl, hetero-alkynyl , one or more cycloalkyl rings, one or more cycloalkenyl rings, one or more cycloalkynyl rings, one of more aryl rings, one or more heterocycle' rings, or any combination of the preceding groups, including larger ring structures composed of linked and/or fused ring systems of different types of rings; wherein this organic-based parent chain may be further substituted with one or more functional groups, including additional substituted or unsubstituted hydrocarbons and heterocycle groups, or a combination thereof; and wherein the linking moiety contains at least one (e.g. 1, 2, 3, 4, 5, 6,...) linking cluster.
[00119] In yet a further embodiment, the linking moiety of the COF has an organic-based parent chain that is comprised of one or more substituted or unsubstituted rings; wherein one or more of these rings is further substituted with one or more functional groups, including additional substituted or unsubstituted hydrocarbons and heterocycle groups, or a combination thereof; and wherein the linking moiety contains at least one (e.g. 1, 2, 3, 4, 5, 6,...) linking cluster.
[00120] In yet a further embodiment, the linking- moiety of the COF has an organic-based parent chain that is comprised of one or more substituted or unsubstituted rings; wherein one or more of these rings are further substituted with one or more functional groups, including additional substituted or unsubstituted hydrocarbons and heterocycle groups, or a combination thereof; and wherein the linking moiety contains at least one (e.g. 1, 2, 3, 4, 5, 6,...) linking cluster that is either a carboxylic acid, ester, aldehyde, amine, thiol, cyano, nitro, hydroxyl, or heterocycle ring
heteroatom, such as the N in pyridine.
[00121 ] In another embodiment, the linking moiety of the COF has an organic-based parent chain that is comprised of one or more substituted or unsubstituted rings; wherein one or more of these rings are further substituted with one or more functional groups, including additional substituted or unsubstituted hydrocarbons and heterocycle groups, or a combination thereof; and wherein the linking moiety contains at least one (e.g. 1, 2, 3, 4, 5, 6,...) linking cluster that is either a carboxylic acid, ester, aldehyde, amine, or hydroxyl.
[00122 ] In another embodiment, the linking moiety of the COF has an organic-based parent chain that is comprised of one or more substituted or unsubstituted rings; wherein one or more of these rings are further substituted with one or more functional groups, including additional substituted or unsubstituted hydrocarbons and heterocycle groups, or a combination thereof; and wherein the linking moiety contains at least one (e.g. 1, 2, 3, 4, 5, 6,...) aldehyde or hydroxyl linking cluster.
[00123 ] In another embodiment, the linking moiety of the COF has an organic-based parent chain that is comprised of one or more substituted or unsubstituted rings; wherein one or more of these rings are further substituted with two or more functional groups, including additional substituted or unsubstituted hydrocarbon and heterocycle groups, or a combination thereof; and wherein the linking moiety contains at least two (e.g. 2, 3, 4, 5, 6,...) aldehyde or hydroxyl linking clusters.
[00124 ] In yet another embodiment, the linking moiety of the COF has an organic-based parent chain that is comprised of one or more substituted or unsubstituted rings; wherein one or more of these rings are further substituted with two or more functional groups, including additional substituted or unsubstituted hydrocarbon and heterocycle groups, or a combination thereof; and wherein the linking moiety contains at least four (e.g. 4, 5, 6,...) hydroxyl clusters .
[00125] In a certain embodiment, the COF is generated from one or more linking moieties comprising structures of Formula II, III, IV, V, VII, VIII, IX, and X:
Figure imgf000049_0001

Figure imgf000050_0001
(VII) (VIII) (IX) , and
Figure imgf000050_0002
(X)
wherein :
A1-A56 are independently selected from the group comprising C, Si, N and P;
n is a number from 1 to 8; T is an atom that can assume tetrahedral molecular geometry (e.g., carbon, silicon, germanium, tin), a tetrahedral group, or a tetrahedral cluster;
Ri3_Ri45 are ndepencien iy selected from the group comprising H, D, FG, (C1-C20) alkyl, substituted (Ci-C20) alkyl , (Ci-C20) alkenyl , substituted (C1-C20) alkenyl , (Ci-C20) alkynyl , substituted (Ci- C20)alkynyl, hetero- {Ci-C20) alkyl , substituted hetero- (Ci-^o) alkyl, hetero- (Ci-C2o) alkenyl , substituted hetero- (Ci-C2o) alkenyl, hetero- (Ci-C20) alkynyl, substituted hetero- (Ci-C20) alkynyl , (d- C2o) cycloalkyl, substituted (Ci~C2o) cycloalkyl , aryl, substituted aryl, heterocycle, and substituted heterocycle;
X9-X14 are independently selected from the group comprising carbon, oxygen, sulfur, silicon, phosphorous, and nitrogen;
Y -Y7 are independently selected from the group comprising H, D, and FG;
with the proviso that a X may not exceed its maximum valence by binding a Y; and
with the proviso that an A may not exceed its maximum valence by binding a R.
[ 00126 ] In yet a further embodiment, a linking moiety capable of linking a one or more cores disclosed herein comprises a compound having structural Formula (IV) :
Figure imgf000051_0001
wherein,
A1"-A" are C;
R36-R48, R 1-R43 are H; and
Figure imgf000051_0002
[ 00127 ] In a further embodiment, a linking moiety of Formula (IV) capable of linking a one or more cores disclosed herein is a compound selected from the group comprising:
Figure imgf000052_0001
[ 00128 ] In another embodiment, a linking moiety capable of linking a one or more cores disclosed herein comprises a compound having structural Formula (VII):
Figure imgf000053_0001
(VII)
wherein,
A"-A are independently either C or N;
R96-R101 are independently selected from the group comprising H, D, FG, (Ci-C6) alkyl, substituted (Ci-C6) alkyl, (Ci-C6) alkenyl, substituted (Ci-C6) alkenyl, (Ci-C6) alkynyl , substituted (Ci~
C6) alkynyl, hetero- (C1-C5) alkyl, substituted hetero- (C1-C5) alkyl , hetero- (C1-C5) alkenyl , substituted hetero- (C1-C5) alkenyl , hetero- (Ci- Cs) alkynyl, substituted hetero- (C1-C5) alkynyl, (Ci-C8) cycloalkyl, substituted (Ci-Ce) cycloalkyl, aryl, substituted aryl, heterocycle, and substituted heterocycle; and
with the proviso that an A may not exceed its maximum valence by binding a R.
[00129] In a further embodiment, a linking moiety capable of linking a one or more cores disclosed herein comprises a compound having structural Formula (VII) :
Figure imgf000053_0002
( VI I )
wherein,
are C;
are independently either an H or D; and
R97 and R1 are FG . [00130 ] In a further embodiment, a linking moiety of Formula (VII) capable of linking a one or more cores disclosed herein is a compound selected from the group comprising:
Figure imgf000054_0001
[00131 ] In another embodiment, a linking moiety capable of linking a one or more cores disclosed herein comprises a compound having structural Formula (VIII) :
Figure imgf000055_0001
(VIII)
wherein,
A31-A36 are independently either C or N;
Rio2_R iii are in<jepencjently selected from the group comprising H, D, FG, (Ci-C6) alkyl, substituted (Ci-C6) alkyl, (Ci-C6) alkenyl , substituted (Cj-Ce) alkenyl, (Ci-C6) alkynyl, substituted (Ci~
C6) alkynyl, hetero- (C1-C5) alkyl, substituted hetero- (Οχ-Ο^) alkyl, hetero- (C1-C5) alkenyl , substituted hetero- (Cx-Cs) alkenyl , hetero-(C!- C5) alkynyl, substituted hetero- (C!-C5) alkynyl, (Ci-Ce) cycloalkyl, substituted (Ci-C8) cycloalkyl , aryl, substituted aryl, heterocycle, and substituted heterocycle; and
with the proviso that an A may not exceed its maximum valence by binding a R.
[ 00132 ] In another embodiment, a linking moiety capable of linking a one or more cores disclosed herein comprises a compound having structural Formula (IX) :
Figure imgf000056_0001
( I X )
wherein,
n is a number from 1 to 8 ;
A^-A44 are independently either C or N;
are independently selected from the group comprising H, D, FG, (Cj-Ce) alkyl, substituted (Ci~C6) alkyl, (Ci-C6) alkenyl , substituted (Ci-C6) alkenyl , (d-C6) alkynyl, substituted (Ci~
C6) alkynyl, hetero- (Cj-Cs) alkyl , substituted hetero- (Ci-C5) alkyl , hetero- (Ci-C5) alkenyl , substituted hetero- (C!-C5) alkenyl , hetero- (Cj- C5) alkynyl, substituted hetero- (C1-C5) alkynyl, (Ci-C8) cycloalkyl, substituted (Ci-CB) cycloalkyl, aryl, substituted aryl, heterocycle, and substituted heterocycle; and
with the proviso that an A may not exceed its maximum valence by binding a R.
[ 00133 ] In another embodiment, a linking moiety capable of linking a one or more cores disclosed herein comprises a compound having structural Formula (X) :
Figure imgf000057_0001
wherein,
T is either a C, Si, or Ge;
A45-A56 are independently either C or N;
Ri26_Ri 5 are inc}epenc}ently selected from the group comprising H, D, FG, (Ci-Ce) alkyl, substituted (Cx-C6) alkyl , (d-Ce) alkenyl, substituted (Ci-C6) alkenyl, (Ci-C6) alkynyl, substituted (Ci~
C6)alkynyl, hetero- (Ci~C5) alkyl, substituted hetero- (C1-C5) alkyl, hetero- (C1-C5 ) alkenyl , substituted hetero- (C!-C5) alkenyl , hetero- (Cj- C5) alkynyl, substituted hetero- (C1-C5) alkynyl, (Ci-C8) cycloalkyl, substituted (Ci-C8) cycloalkyl, aryl, substituted aryl, heterocycle, and substituted heterocycle;
with the proviso that an A may not exceed its maximum valence by binding a R.
[00134 ] The linking moiety may have two or more linking clusters (e.g., three or more linking clusters) to obtain 2D and 3D- frameworks including cages and ring structures.
[00135] The disclosure provides a COF comprising two or more cores covalently bonded to one or more linking moieties through one or more linking clusters. In a certain embodiment, one or more linking clusters contain one or more atoms selected from the group comprising carbon, boron, oxygen, nitrogen and phosphorus. In another embodiment one or more linking clusters contain oxygen or nitrogen .
[ 00136 ] In a further embodiment, a core and/or linking moiety contains at least one boron-containing linking cluster. In another embodiment, a core and/or linking moiety contains a boron- containing linking cluster which forms a covalent bond with a boron-lacking linking cluster. In a further embodiment, a core and/or linking moiety contains a boron-containing linking cluster which forms a covalent bond with a boron-lacking linking cluster through a condensation reaction.
[ 00137 ] In a certain embodiment, a core and/or linking moiety disclosed herein has at least one (e.g. 1, 2, 3, 4, 5, 6,...) linking
- —BxOyRz
cluster with the formula ¾ , wherein x is number from 1 to
2, y is a number from 1 to 8, z is a number from 1 to 8, and R is a H, D, or FG. In another embodiment, a core is linked to one or more linking moieties by at least 2, at least 3 or at least 4 boron containing linking clusters. In a further embodiment, the boron- containing linking cluster comprises at least 2 or at least 4 oxygens capable of forming a link. For example, a boron-containing linking cluster disclosed herein comprises Formula (VI):
Figure imgf000058_0001
(VI)
[00138 ] The COFs of the disclosure may optionally further comprise a guest species. Such a guest species may increase the surface area of the covalently linked organic networks. In a similar manner, the covalently linked organic networks of the disclosure further comprise an adsorbed chemical species. Such adsorbed chemical species include for example, ammonia, carbon dioxide, carbon monoxide, hydrogen, amines, methane, oxygen, argon, nitrogen, organic dyes, polycyclic organic molecules, metal ions, inorganic clusters, organometallic clusters, and combinations thereof . [ 00139 ] A method for forming COFs of the disclosure is provided by the following schemes, reactions, and working Examples.
Moreover, the schemes, reactions and working Examples provided herein, while setting forth exemplified methods to make and/or synthesize the COFs of the disclosure, these schemes, reactions and working Examples are not presented as the definitive methods to make the COFs of the disclosure. The disclosure encompasses obvious variations of the synthesis reactions, schemes, and/or working Examples presented herein, including but not limited to, varying the reaction conditions (e.g. adding, removing, and/or modifying heating and/or cooling steps, adding, removing, and/or modifying distillation steps, adding, removing, and/or modifying the atmosphere of one or more reactions, using or not using molecular sieves, etc.); removing, adding, or substituting solvents; adding or replacing catalysts; changing and/or modifying linking cluster functional groups (e.g. converting a functional group to a different functional group, modifying an existing functional group to make it more reactive, modifying an existing functional group so as to make it reactive under certain reaction conditions) ; protecting and de-protecting functional groups of the cores and/or linking moieties; and adding, replacing, or removing purification steps.
[ 00140 ] Generally, depending on the composition of the linking clusters, various reaction mechanisms can be utilized to form one or more covalent bonds between one or more cores and one or more linking moieties. Examples of such reaction mechanisms include, but are not limited to, condensation, radical, SM 1 , SN 2 , SN AR , El, E2, E1CB elimination, pericyclic, electrocylic, sigmatropic
rearrangements, cycloaddition, and electrophilic aromatic
substitution .
[ 00141 ] Moreover, by taking advantage of linking clusters that react differently under the same conditions or alternatively under different conditions, one can tailor COFs so as to directionally, or not directionally, covalently bond one or more cores with one or more linking moieties so as to form heterogeneous nets. For example, a core which has linking clusters with different
reactivities can react with different linking clusters from a linking moiety in a predictive manner. The reactivities of such linking clusters can vary not only based on composition, but also based on steric effects, electronic effects, neighboring atom effects, and/or a combination thereof.
[00142 ] Typically, but not exclusively, one or more covalent bonds are formed between one or more cores and one or more linking moieties by using condensation reactions, for example, enamine formation, imine formation, Claisen condensation, aldol
condensation, Knoevenagel condensation, and boronic acid-based condensation reactions. Additionally, typical reactions that can be used to form one or more covalent bonds between one or more cores and one or more linking moieties include, but are not limited to, Suzuki couplings, Chan-Lam couplings, Liebeskind-Srogl couplings, general SN 1-based reactions, general SN 2-based reactions, olefin metathesis, and conjugate addition based reactions.
[00143 ] The preparation of the frameworks of the disclosure can be carried out in either an aqueous or non-aqueous solvent system. The solvent may be polar or non-polar, or a combination thereof, as the case may be. The reaction mixture or suspension comprises a solvent system, linking moieties, and cores. The reaction solution, mixture or suspension may further contain a catalyst. The reaction mixture may be heated at an elevated temperature or maintained at ambient temperature, depending on the reaction components.
[00144 ] Examples of non-aqueous solvents that can be used in the reaction to make the framework and/or used as non-aqueous solvent for a post synthesized framework reaction, include, but is not limited to: n-hydrocarbon based solvents, such as pentane, hexane, octadecane, and dodecane; branched and cyclo-hydrocarbon based solvents, such as cycloheptane, cyclohexane, methyl cyclohexane, cyclohexene, cyclopentane; aryl and substituted aryl based solvents, such as benzene, toluene, xylene, chlorobenzene , nitrobenzene, cyanobenzene, naphthalene, and aniline; mixed hydrocarbon and aryl based solvents, such as, mixed hexanes, mixed pentanes, naptha, and petroleum ether; alcohol based solvents, such as, methanol, ethanol, n-propanol, isopropanol, propylene glycol, 1, 3-propanediol, n-butanol, isobutanol, 2-methyl-l-butanol , tert- butanol, 1, 4-butanediol , 2-methyl-l-petanol , and 2-pentanol; amide based solvents, such as, dimethylacetamide, dimethylformamide (DMF), formamide, N-methyl formamide, N-methylpyrrolidone , and 2- pyrrolidone amine based solvents, such as, piperidine,
pyrrolidine, collidine, pyridine, morpholine, quinoline,
ethanolamine, ethylenediamine, and diethylenetriamine ; ester based solvents, such as, butylacetate, sec-butyl acetate, tert-butyl acetate, diethyl carbonate, ethyl acetate, ethyl acetoacetate , ethyl lactate, ethylene carbonate, hexyl acetate, isobutyl acetate, isopropyl acetate, methyl acetate, propyl acetate, and propylene carbonate; ether based solvents, such as, di- tert-butyl ether, diethyl ether, diglyme, diisopropyl ether, 1,4-dioxane, 2- methyltetrahydrofuran, tetrahydrofuran (THF) , and tetrahydropyran; glycol ether based solvents, such as, 2-butoxyethanol ,
dimethoxyethane, 2-ethoxyethanol , 2- ( 2-ethoxyethoxy) ethanol , and 2- methoxyethanol ; halogenated based solvents, such as, carbon tetrachloride, cholorbenzene, chloroform, 1 , 1-dichloroethane , 1,2- dichloroethane, 1 , 2-dichloroethene, dichloromethane (DCM), diiodomethane, epichlorohydrin, hexachlorobutadiene, hexafluoro-2- propanol, perfluorodecalin, perfluorohexane, tetrabromomethane, 1, 1, 2, 2-tetrchloroethane, tetrachloroethylene, 1,3,5- trichlorobenzene, 1, 1, 1-trichloroethane, 1, 1, 2-trichloroethane, trichlproethylene, 1 , 2 , 3-trichloropropane, trifluoroacetic acid, and 2 , 2 , 2-trifluoroethanol ; inorganic based solvents, such as hydrogen chloride, ammonia, carbon disulfide, thionyl chloride, and phophorous tribromide; ketone based solvents, such as, acetone, butanone, ethylisopropyl ketone, isophorone, methyl isobutyl ketone, methyl isopropyl ketone, and 3-pentanone ; nitro and nitrile based solvents, such as, nitroethane, acetonitrile , and
nitromethane; sulfur based solvents, dimethyl sulfoxide (DMSO), methylsulfonylmethane, sulfolane, isocyanomethane, thiophene, and thiodiglycol ; urea, lactone and carbonate based solvents, such as l-3-dimethyl-3, 4, 5, 6-tetrahydro-2 (1H) -pyrimidinone (DMPU), 1-3- dimethyl-2-imidazolidinone , butyrolactone , cis-2 , 3-butylene carbonate, trans-2 , 3-butylene carbonate, 2, 3-butylene carbonate; carboxylic acid based solvents, such as formic acid, acetic acid, chloracetic acid, trichloroacetic acid, trifluoroacetic acid, propanoic acid, butanoic acid, caproic acid, oxalic acid, and benzoic acid; boron and phosphorous based solvents, such as triethyl borate, triethyl phosphate, trimethyl borate, and trimethyl phosphate; deuterium containing solvents, such as deuterated acetone, deuterated benzene, deuterated chloroform, deuterated dichloromethane, deuterated DMF, deuterated DMSO, deuterated ethanol, deuterated methanol, and deuterated THF; and any appropriate mixtures thereof.
[00145] In another embodiment, the nonaqueous solvent used as the solvent system in synthesizing the framework has a pH less than 7. In a further embodiment, the solvent system used to synthesize the framework is an aqueous solution that has a pH less than 7. In another embodiment, the nonaqueous solvent used as the solvent system in synthesizing the framework has a pH greater than 7. In a further embodiment, the solvent system used to synthesize the framework is an aqueous solution that has a pH greater than 7. In a further embodiment, the solvent system used to synthesize the framework is an aqueous solution or non aqueous solution that has a neutral pH. In yet a further embodiment, the solvent system used to synthesize the frameworks contains mesitylene. In another embodiment, the solvent system used to synthesize the frameworks contains acetic acid. In a further embodiment, the solvent system used to synthesize the frameworks contains an alcohol.
[00146] Those skilled in the art will be readily able to determine an appropriate solvent or appropriate mixture of solvents based on the starting reactants and/or where the choice of a particular solvent (s) is not believed to be crucial in obtaining the materials of the disclosure.
[00147] The COF crystalline product may be either
polycrystalline or a single crystal. For example, after the chemical reactions a porous, semicrystalline to crystalline organic material with high surface area is produced.
[00148] The COFs of the disclosure can assume any
framework/structure. For example, using the methods of the disclosure, COFs having any of the following framework type codes can be obtained: ABW ACO AEI AEL AEN AET AFG AFI AFN AFO AFR AFS AFT AFX AFY AHT ANA APC APD AST ASV ATN ATO ATS ATT ATV AWO AWW BCT *BEA BEC BIK BOG BPH BREI CAK1 CAS
CDO CFI CGF CGS CHA CHI CLO CON CZP DAC DDR DFO DFT DOH
DON EAB EDI EMT EON EPI ERI ESV ETR EUO EZT FAR FAU FER
FRA GIS GIU GME GON GOO HEU IFR IHW ISV ITE ITH ITW IWR
IWV IWW JBW KFI LAU LEV LIO LIT LOS LOV LTA LTL LTN MAR
MAZ MEI MEL MEP MER MFI MFS MON MOR MOZ . MSE MSO MTF MTN
MTT MTW MWW NAB NAT NES NON NPO NSI OBW OFF OSI OSO OWE
PAR PAU PHI PON RHO RON RRO RSN RTE RTH RUT RWR RWY SAO
SAS SAT SAV SBE SBS SBT SFE SFF SFG SFH SFN SFO SGT SIV
SOD SOS SSY STF STI STT SZ'R TER THO TON TSC TUN UEI UFI
UOZ USI UTL VET VFI VNI VSV WEI WEN YUG ZON.
[00149] In another aspect, the covalent-organic frameworks set forth above may include an interpenetrating covalent-organic framework that increases the surface area of the covalent-organic framework. Although the frameworks of the disclosure may
advantageously exclude such interpenetration, there are
circumstances when the inclusion of an interpenetrating framework may be used to increase the surface area.
[00150] It is further contemplated that a COF of the disclosure may be generated by first utilizing a plurality of linking moieties having different functional groups, wherein at least one of these functional groups may be modified, substituted, or eliminated with a different functional group post-synthesis of the COF. In other words, at least one linking moiety comprises a functional group that may be post-synthesized reacted with a post framework reactant to further increase the diversity of the functional groups of the COF.
[00151] After the COFs are synthesized, the COFs may be further modified by reacting with one or more post framework reactants that may or may not have denticity. In a certain embodiment, the COFs as-synthesized are not reacted with a post framework reactant. In another embodiment, the COFs as-synthesized are reacted with at least one post framework reactant. In yet another embodiment, the COFs as-synthesized are reacted with at least two post framework reactants. In a further embodiment, the COFs as-'synthesized are reacted with at least one post framework reactant that will result in adding denticity to the framework. [00152 ] It is contemplated by this disclosure that chemical reactions that modify, substitute, or eliminate a functional group post-synthesis of the framework with post framework reactant may use one or more similar or divergent chemical reaction mechanisms depending on the type of functional group and/or post framework reactant used in the reaction. Examples of chemical reaction mechanisms contemplated by this disclosure include, but is not limited to, condensation, radical, SN 1, SN 2, SN AR, El, E2, E1CB elimination, nucleophilic internal substitution (SN 1) , pericyclic, electrocylic, sigmatropic rearrangements, cycloaddition, and electrophilic aromatic substitution, electrophilic addition, oxidation, reduction, cycloadition, ring closing metathesis (RCM) , pericylic, electrocylic, rearrangement, carbene, carbenoid, cross coupling, and degradation.
[00153] All the aforementioned linking moieties and/or cores that possess appropriate reactive functionalities can be chemically transformed by a suitable reactant post framework synthesis to add further functionalities to the COF. By modifying the organic moieties and/or cores within the COF post-synthesis, access to functional groups that were previously inaccessible or accessible only through great difficulty and/or cost is possible and facile.
[00154 ] It is yet further contemplated by this disclosure that to enhance chemoselectivity it may be desirable to protect one or more functional groups that would generate unfavorable products upon a chemical reaction desired for another functional group, and then deprotect this protected group after the desired reaction is completed. Employing such a protection/deprotection strategy could be used for one or more functional groups.
[00155 ] Other agents can be added to increase the rate of the reactions disclosed herein, including adding catalysts, bases, and acids.
[00156] In another embodiment, the post framework reactant is selected to have a property selected from the group comprising, binds a metal ion, increases the hydrophobicity of the framework, modifies the gas sorption of the framework, modifies the pore size of the framework, and tethers a catalyst to the framework. [00157 ] In one embodiment, the post framework reactant can be a saturated or unsaturated heterocycle.
[00158 ] In another embodiment, the post framework reactant has 1-20 carbons with functional groups including atoms such as N, S, and 0.
[00159] In yet another embodiment, the post framework reactant is selected to modulate the size of the pores in the framework.
[00160 ] In another embodiment, the post framework reactant is selected to increase the hydrophobicity of the framework.
[00161 ] In yet a further embodiment, the post framework reactant is selected to increase or add catalytic efficiency to the framework .
[00162 ] In yet a further embodiment, the post framework reactant is selected to increase the charge mobility of the framework.
[00163] In another embodiment, the post framework reactant is selected to increase the time the framework holds a charge.
[00164 ] In another embodiment, a post framework reactant is selected so that organometallic complexes can be tethered to the framework. Such tethered organometallic complexes can be used, for example, as heterogeneous catalysts
[00165 ] In yet another embodiment, the post framework reactant is selected to modulate gas separation of the framework. In a certain embodiment, the post framework reactant creates an electric dipole moment on the surface of the framework when it chelates a metal ion.
[00166 ] In one embodiment of the disclosure, a gas storage material comprising a COF is provided. Advantageously, the COF includes one or more sites for storing gas molecules. Gases that may be stored in the gas storage material of the disclosure include gas molecules comprising available electron density for attachment to the one or more sites on the surface are of a pore or
interpenetrating porous network. Such electron density includes molecules having multiple bonds between two atoms contained therein or molecules having a lone pair of electrons. Suitable examples of such gases include, but are not limited to, the gases comprising a component selected from the group comprising ammonia, argon, carbon dioxide, carbon monoxide, hydrogen, and combinations thereof. In a particularly useful variation the gas storage material is a hydrogen storage material that is used to store hydrogen (H2) . In another particularly useful variation, the gas storage material is a carbon dioxide storage material that may be used to separate carbon dioxide from a gaseous mixture.
[00167] In a variation of this embodiment, the gaseous storage site comprises a pore in a COF. In a refinement, this activation involves removing one or more chemical moieties (guest molecules) from the COF. Typically, such guest molecules include species such as water, solvent molecules contained within the COF, and other chemical moieties having electron density available for attachment.
[00168] The COFs provided herein include a plurality of pores for gas ads'orption. In one variation, the plurality of pores has a unimodal size distribution. In another variation, the plurality of pores have a multimodal (e.g., bimodal) size distribution.
[00169] Sorption is a general term that refers to a process that results in the association of atoms or molecules with a target material. Sorption includes both adsorption and absorption.
Absorption refers to a process in which atoms or molecules move into the bulk of a porous material, such as the absorption of water by a sponge. Adsorption refers to a process in which atoms or molecules move from a bulk phase (that is, solid, liquid, or gas) onto a solid or liquid surface. The term adsorption may be used in the context of solid surfaces in contact with liquids and gases. Molecules that have been adsorbed onto solid surfaces are referred to generically as adsorbates, and the surface to which they are adsorbed as the substrate or adsorbent. Adsorption is usually described through isotherms, that is, functions which connect the amount of adsorbate on the adsorbent, with its pressure (if gas) or concentration (if liquid). In general, desorption refers to the reverse of adsorption, and is a process in which molecules adsorbed on a surface are transferred back into a bulk phase.
[00170] Although it is known that porous compounds adsorb guest molecules, the mechanism of adsorption is complicated. For the fundamental studies developments of a new class of materials whose structure are well organized are prerequisites, because one needs to consider specific interaction between adsorbent and adsorptive. Recently discovered crystalline porous materials of COFs are good candidates to acquire general knowledge systematically. That is, not only apparent surface area and pore volume but also pore size distribution and adsorption sites needs to be analyzed by use of Ar isotherms .
[00171] Two COFs have been examined as standards for Ar storage materials. Since these compounds possess various pore diameters and functionalities, systematic studies on Ar sorption behavior should be possible. Gas sorption isotherms were taken under low pressure region (up to 760 Torr) at 87 K.
[00172] These materials would be used as standard compounds for sorption instruments, and obtained results would be helpful to improve various industrial plants (i.e. separation or recovery of chemical substance).
[00173] The advantage of COFs over well studied activated carbons is related to the robust porous structures and the ease to functionalize the pore and surface by choosing appropriate organic linkers and/or metal ions. Collected data should be applicable to DFT calculation to estimate pore size distribution, which is attractive method in isotherm analyses.
[00174] The ability of gas sorption has been examined by measuring Ar isotherms, and several materials are already
synthesized in gram scale order successfully.
[00175] These materials and theoretical knowledge should be desired by chemical industry companies who are running gas separation and storage systems.
[00176] In one embodiment, the materials provided herein may be used for methane storage and purification of natural gases. The advantage of COFs over well studied activated carbons is related to the robust porous structures and the ease to functionalize the pore and surface by choosing appropriate organic linkers. Improvements in this disclosure are that i) optimized pore size for CH4 sorption has been discovered and ii) functionalized compounds show good sorption capacities. These discoveries will lead COFs to become more selective and more efficient gas sorption and purification adsorbents. The ability of gas sorption has been examined by measuring CH4 isotherms under wide range pressure. Some compound showed high capacity rather than zeolite 13X and MAXSORB (carbon powder) which are widely used as adsorbents or separation agents.
[00177] These materials should be desired by companies who wish to have new porous materials for gas storage and separation, because these materials have optimized pore structures and/or . functionalized pore systems which are important factors to control affinity with CH4 molecules. Indeed, appropriate affinity between CH4 and adsorbents should be effective for purification of natural gas without poisoning of the materials' surface.
[00178 ] In another embodiment, the materials may be used for gas storage and separation. The advantage of COFs over well studied activated carbons and zeolites is related to the robust porous structures and the ease to functionali ze the pore and surface by choosing appropriate organic linkers and/or metal ions. Some improvements in this disclosure are that i) optimized pore size for C02 sorption has been discovered and ii) functional! zed compounds show good sorption capacities. These discoveries will lead COFs to become more selective and more efficient gas sorption and
separation adsorbents. Provided herein are porous Covalent Organic Frameworks (COFs) having functionalized pore, high surface area, and high chemical and thermal stability as adsorbents for
reversible carbon dioxide storage. Considering that removal of C02 (i.e. green house gas) is an important issue from the environmental points of view, development of feasible C02 storage materials is pressing issue.
[00179] These materials should be desired by companies who wish to have new porous materials for gas storage and separation, because these materials have optimized pore structures and/or functionalized pore systems which are important factors to control affinity with C02 molecules. Indeed, appropriate affinity between C02 and adsorbents should be effective for removal of C02 without poisoning of the materials' surface.
[00180 ] Provided herein are porous COFs having functionalized pores, high surface area, and high chemical and thermal stability as adsorbents for reversible hydrogen storage. These materials could be widely applicable to store significant amounts of H2 in a safe and practical way. [00181 ] In another embodiment, the materials may be used in an
H2 tank for hydrogen-powered fuel cells .
[00182 ] The advantage of COFs over well studied activated carbons is related to the robust porous structures and the ease to functionalize the pore and surface by choosing appropriate organic linkers and/or metal ions. Aspects of this disclosure are that i) optimized pore size for H2 sorption has been discovered and ii) functionalized compounds show good sorption capacities. These discoveries will lead COFs to become more selective and more efficient H2 storage materials.
[00183 ] These materials should be desired by car companies who wish to have new porous materials for H2-powered fuel cells.
[00184 ] The disclosure also provides chemical sensors (e.g.
resistometric sensors) capable of sensing the presence of an analyte of interest. There is considerable interest in developing sensors that act as analogs of the mammalian olfactory system. However, sensor systems are easily contaminated. The porous structures of the disclosure provide a defined interaction area that limits contamination. For example, various polymers are used in sensor systems including conductive polymers (e.g.,
poly (anilines ) and polythiophenes) , composites of conductive polymers and non-conductive polymers and composites of conductive materials and non-conductive materials. In resistometric systems conductive leads are separated by the conductive material such that a current traverse between the leads and through the sensor material. Upon binding to an analyte, the resistance in the material changes and detectable signal is thus generated. Using the COFs of the disclosure, the area surrounding the sensor material is limited and serves as a "filter" to limit contaminants from contacting the sensor material, thus increasing sensor specificity.
[00185] In yet another embodiment, the disclosure provides electrical devices comprising COFs of the disclosure for use in displays and screens as well as other components.
[00186] The following non-limiting examples illustrate the various embodiments provided herein. Those, skilled in the art will recognize many variations that are within the spirit of the subject matter provided herein and scope of the claims.
EXAMPLES
[00187] Synthesis Reactions and Associated Schemes: All reactions were performed under argon using either glovebox or Schlenk line techniques. Acetone (99.8%, extra dry) was purchased from Acros Chemicals. esitylene (98%) was purchased from Fluka and was not dried prior to use. Tetrahydrofuran (HPLC grade, Aldrich) was passed through a MBraun Solvent Purification System before use (Alumina and Molecular sieves columns) . Deuterated solvents
(Cambridge Isotope Laboratories) for nuclear magnetic resonance (NMR) spectroscopic analyses were used as received. All other starting materials and solvents, unless otherwise specified, were obtained from Aldrich Chemical Co. and used without further purification. Analytical thin-layer chromatography (TLC) was performed on glass plates, precoated with silica gel 6O-F254 (Merck 5554). Tetra (p-amino-phenyl ) porphyrin (TAPP) and 2,3,4,5- tetrahydroxyanthrancene (THAn) were synthesized using published procedures. Pyrex glass tube charged with reagents and flash frozen with liquid N2 were evacuated using a Schlenk line by fitting the open end of the tube inside a short length of standard rubber hose that was further affixed to a ground glass tap which could be close to insulate this assembly from dynamic vacuum when the desired internal pressure was reached. Tubes were sealed under the desired static vacuum using an oxygen-propane torch. 1H and 1 C NMR spectra, were recorded on a Bruker Avance 500 MHz spectrometer at ambient ) temperature, unless otherwise noted. The chemical shifts are reported in ppm relative to the signals corresponding to the residual non-deuterated solvents (CDC13: δ 7.26 ppm, DMSO-d6: δ 2.50 ppm) . High-resolution electrospray ionization mass spectra (HRMS- ESI) were measured on a Micromass Q-TOF Ultima mass spectrometer. The reported molecular mass (m/z) values were the most abundant monoisotopic mass. Fourier transform infrared (FT-IR) spectra (4000-400 cm"1) were obtained from KBr pellets using a Shimadzu IRAffinity-1 FT-IR system. [00188 ] Scheme I demonstrates the synthesis of 5,10,15,20- tetrakis- [4- (4 , 4, 5, 5-tetramethyl- [1,3, 2 ] dioxaborolan-2-yl ) -phenyl] - porphyrin (Intermediate 1).
Scheme I
Figure imgf000071_0001
[ 00189 ] 5, 10,15 , 20-Tetrakis- [4- (4 , 4 , 5 , 5-tetra ethyl- [1 , 3,2]dioxaborolan-2-yl) -phenyl] -porphyrin (Intermediate 1) 3 : Under an atmosphere of Argon, BF3 -Et20 (1.0 mL) was added to a solution of pyrrole 1 (1.8 mL, 26.0 mraol) and aldehyde 2 (6.0 g, 26.0 mmol ) dissolved in chloroform (900 mL) . After stirring for 2 h at ambient temperature, p-chloranil (10.5 g, 42 mmol) was added. The mixture was stirred at ambient temperature for 1 hour, and then triethylamine (2 mL) was added to quench BF3-Et20. The mixture was passed through a bed of silica on a sintered Biichner funnel, and then washed with chloroform until the filtrate appeared colorless. After the filtrate was concentrated in vacuo, the resulting crude solid was triturated with excess methanol, filtered, and washed thoroughly with methanol (500 mL) to afford compound 3 as a purple solid (3.8 g, yield = 13%) *H NMR (500 MHz, CD2C12, 298 K) : δ 8.85 (s, 8H, pyrrole-H) , 8.23 (AB q, JAB= 8.0 Hz, 10.0 Hz, 16H, Ar-H), 1.53 (s, 48H, Me-H) . 13C NMR (125 MHz, CD2C12, 298 K) : δ 145.08, 135.11, 133.03, 120.12, 84.14, ]77.25, 25.08. HRMS-ESI : Calculated for C68H74B4N408 [M + H]+ ml z = 1119.5957, found ml z = 1119.6047.
[ 00190 ] Scheme II demonstrates the synthesis of tetra (p-boronic acid-phenyl) porphyrin (TBPP) , a core of the disclosure.
Scheme II
Figure imgf000072_0001
[ 00191 ] Tetra (p-boronic acid-phenyl) porphyrin (TBPP) 4: Sodium periodate (6.0 g) was added to a solution of 3 (2.5 g, 2.2 mmol ) in THF/H20 (4:1) (100 mL) . After stirring the solution at 60 °C for 30 mL, 1M HC1 (20 mL) was added. The mixture was stirred at ambient temperature for about 16 hours. The solvent was removed in vacuo. The resulting crude solid was resuspended in water, filtered, and washed thoroughly with water (200 mL) . The crude solid was then washed with chloroform (300 mL) to dissolve unreacted 3 and partially deprotected products to obtain substantially pure 4 as a dark purple solid (830 mg, 47%) XH NMR (500 MHz, DMSO-d6, 298 K) : δ PPM 8.21 (AB q, 16 H, = 7.7 Hz, 11.0 Hz, Ar-H) 8.39 (brs, 8H, B- OH), 8.83 (s, 8H, pyrrole-H) , -2.70 (s, 2H, pyrrole-N-H) . 13C NMR (125 MHz, DMSO-de, 298 K) : δ 148.05, 139.40, 138.50, 125.40, 82.10. HRMS-ESI: Calculated for [M + H]+ ml z = 791.2827, found ml z = 791.2867. [ 00192 ] COFs of the disclosure were synthesized by solvothermal reactions. In the case of COF-366, the formation of the imine bond between the porphyrin and the terephthaldehyde was confirmed by FT- IR spectroscopy and 13C cross-polarization with magic-angle spinning' (CP-MAS) NMR spectroscopic techniques. The FT-IR spectrum clearly reveals the C=N stretching of imine species (vc=N = 1620 and 1249 cm"1), while the 13C CP-MAS NMR spectrum has a resonance at 156.95 ppm for the carbon of C=N bond.
[00193 ] Scheme III presents the synthesis of two COFs of the disclosure (COF-366 and COF-66) .
Scheme III
Figure imgf000073_0001
[00194] COF-366: A Pyrex tube was charged with terephthaldehyde (5.6 mg, 0.04 mmol), tetra (p-amino-phenyl ) porphyrin (ΤΆΡΡ) (13.5 mg, 0.02 mmol), 0.5 mL of ethanol, 0.5 mL of mesitylene, and 0.1 mL of 6 M aqueous acetic acid. The tube was flash frozen at 77 K (liquid N2 bath) , evacuated to an internal pressure of 150 mTorr and then flame sealed. The reaction was heated at 120 °C for 72 h. The resulting purple solid was isolated by centrifugation, and washed with 1,4-dioxane, tetrahydrofuran, and acetone. The purple solid was dried at ambient temperature at 10"2 mTorr for 12 h to afford the title product as a powder (14 mg; yield = 79%) IR (KBr, cm"1) 3426 (br) , 1620 (s), 1512 (m) , 1466 (m) , 1420 (w) , 1381 (m) , 1288 (m) , 1249 (m) , 1180 (s), 1118 (w) , 802 (s), 733 (w) , 656 (w) , 556 (w) .
[00195] COF-66: A mixture of tetra (p-boronic acid-phenyl) porphyrin (TBPP) (15.8 mg, 0.02 mmol) and 2,3,4,5- tetrahydroxyanthrancene (THAn) (10.0 mg, 0.04 mmol) in a mixture of 0.5 mL dioxane and 0.5 mL mesitylene was heated at 120 °C for 72 h. The resulting solid was collected by centrifugation, washed with anhydrous dioxane, and anhydrous acetone. The solid was then dried at ambient temperature at 10~2 mTorr for 12 h to afford the title product as a greenish purple powder. (14 mg; yield = 72%) IR (KBr, cm"1) 3425 (br), 1651 (m) , 1604 (s), 1596 (m) , 1536 (w) , 1495 (m) , 1458 (m) , 1342 (vs), 1234 (vs), 1164 (s), 980 (w), 863 (m) , 832 (w) , 710 (w) , 644 (w) .
[00196] Powder X-Ray Diffraction Analyses: Powder X-ray diffraction data were collected using a Bruker D8-advance Θ-2Θ diffractometer in reflectance Bragg-Brentano geometry employing Ni filtered Cu Ka line focused radiation at 1600 W (40 kV, 40 mA) power and equipped with a position sensitive detector (PSD) with an electronic window of 6°. Samples were mounted on zero background sample holders by dropping powders from a wide-blade spatula and then leveling the sample surface with a razor blade. Given that the particle size of the 'as synthesized' samples were already found to be quite monodisperse no sample grinding or sieving was used prior to analysis. The best counting statistics were achieved by collecting samples using a 0.02° 2Θ step scan from 1 - 50° with exposure time of 1 s per step. No peaks could be resolved from the baseline for 2Θ > 35° therefore this region was not considered for further analysis.
[00197] Powder X-ray diffraction patterns (Figure 1) of the two new COFs demonstrated their crystalline nature. In both cases, a strong diffraction peak appears at low angle — 2Θ = 3.0° and 3.5°, respectively — along with some other peaks with lower diffraction intensities. No diffraction peaks were observed which could be attributed to starting materials. The observed diffraction peaks are relatively broad. Broadening in powder X-ray diffraction peaks is associated with several factors, including particle size, strain defects of the perfect lattice, and/or instrumental. There are many examples in the literature of porous materials exhibiting
diffraction patterns with broad peaks, including for instance, ordered mesoporous silicas. These materials exhibit only long-range order, with a well-defined framework and pore systems, but the exact location of the silicon and oxygen atoms cannot be determined precisely. In the present cases, the broadening of the peaks can be attributed to a number of defects in the perfect crystal lattice, as well as to the particle size effects. The possibility of a lack of short-range order in the structure cannot be ruled out.
Nevertheless, in contrast with the mesoporous silicas, where the number of possible combinations for the Si and O atoms positions in the frameworks is infinite, in the case of the COFs, the structural models are made based on geometrical features of the employed building blocks, which reduces the number of possibilities and allows us to propose crystalline materials models which explain the observed properties.
[00198] Structural Modeling: All the models, including cell parameters and atomic positions were generated using the Materials Studio software package, employing the Materials Visualizer module. The porphyrin units were initially located with their centroid at the vertex positions of the sql layer type, obtained from the Reticular Chemistry Structure Resource (http:)
//rcsr . anu . edu . au/layers/sql . Accordingly, all the models were constructed in the tetragonal system, with the layers lying on the ab plane. For the eclipsed models (AA stacking sequence) primitive unit cells were selected, while for the models with staggered porphyrins (AB stacking sequence) the models were constructed in body-centered cells. The space groups with the maximum possible symmetry were selected. An energetic minimization was performed to optimize the geometry of the building units, employing the universal forcefield implemented in the Forcite module of Materials Studio. During this process, the unit cell parameters for each model were also optimized. In Table 1 the values of the optimized unit cell parameters and the space group for the models constructed are summarized.
Figure imgf000076_0001
Table 1. Crystal data of simulated crystal structure in the eclipsed form (tetragonal space group) .
[00199] To elucidate the lattice packing, a model was
constructed by using the Materials Studio software package. The square geometry of the porphyrin unit suggests the formation of the square layers with sql topology. Accordingly, modeling was performed in the tetragonal system, with the layers lying on the ah plane. Regarding the stacking of the layers, two extreme
possibilities were evaluated — these are (i) a fully eclipsed model, with an AA stacking sequence, and (ii) a staggered model with an AB stacking sequence of layers, each layer translated from the next one by one half of the a and b lattice parameters. These two models were constructed in the space groups P /mmm and 14 /mmm, respectively, for COF-66, and in the space groups P4/m and I4/m, for COF-366. A geometrical energy minimization was performed using the universal force field implemented in the forcite module of Materials Studio, to optimize the geometry of the building molecules, as well as the unit cell parameters. When the powder diffraction patterns for the models were calculated and compared to the experimental ones, excellent agreements was observed with the fully eclipsed model in the case of both materials. A full profile pattern matching (Pawley) refinement was then carried out to refine the unit cell parameters for both structures, obtaining good agreement factors for both compounds. Therefore, both the materials may be described as being composed of square layers, laying on the ab plane and stacking along the 001 direction with interlayer distances between the centroids of the stacked porphyrin units of 5.64 and 3.81 A for COF-366 and COF-66, respectively. Hollow channels are produced, running along the c axis, with a diameter of 20.2 and 23.2 A for COF-366 (Figure 2) and COF-66 (Figure 3) respectively, as calculated using the Platon cavity routine.
[00200] The corresponding powder patterns for the four models were calculated (Figures 5 and 6) and compared with the
experimental ones, finding the best agreement for the eclipsed models. With them, a full profile pattern (Pawley) refinement was performed against the experimental powder patterns obtaining the refined unit cell parameters.
[00201] In Tables 2 and 3 the refined cell parameters and the fractional atomic coordinates of the two final models can be found.
Figure imgf000077_0001
Table 2. Refined unit cell parameters and fractional atomic coordinates for COF-366.
Figure imgf000077_0002
CI 0.11501 0.00000 0.00000
C2 0.16629 0.00000 0.00000
C3 0.09167 -0.04104 0.00000
C4 0.41990 0.95312 0.00000
C5 0.45999 0.97645 0.00000
N6 0.04698 0.95302 1.00000
C7 0.08128 0.88719 1.00000
C8 0.19128 1.03942 1.00000
C9 0.23746 1.03975 1.00000
O10 0.33844 1.04063 1.00000
Cll 0.61940 1.02279 1.00000
C12 0.26067 1.00000 1.00000
B13 0.31205 1.00000 1.00000
C14 0.50000 0.04661 0.00000
Table 3. Refined unit cell parameters and fractional atomic coordinates for COF- 66 .
[ 00202 ] Laser Flash. Photolysis time-resolved microwave
conductivity (FP-TRMC) : Flash-photolysis time-resolved microwave conductivity was performed using an in situ TRMC system. A resonant cavity was used to obtain a high degree of sensitivity in the conductivity measurement. The resonant frequency and microwave power were set at -9.1 GHz and 3 m , respectively, so that the electric field of the microwave was small enough not to disturb the charge carrier motion. The charge carriers were photochemically generated using the third harmonic generation (THG, λ = 355 nm) light pulses from a Spectra-Physics model Quanta-Ray Nd: YAG laser (5-8 ns pulse duration) with an incident photon densities of 1.4 - 2.1 x 1016 cm"2. The TRMC signal, picked up by a diode (rise time < 1 ns), was monitored by a Tektronics model TDS3052B digital oscilloscope. The observed conductivities were normalized, given by a photocarrier generation yield (φ) multiplied by sum of the charge carrier mobilities (Σμ) , according to the equation, φ∑μ =
(1/ eAIoFiight ) (ΔΡΓΓ) , where, e, A, I0, Flight, Pr, and ΔΡΓ are the unit charge of a single electron, sensitivity factor (S"1 cm) , incident photon density of the excitation laser (photons cm-2) , filling factor (cm-1) , and reflected microwave power and its change, respectively. All the experiments were performed at room
temperature in air. The values of φ were determined by conventional current integration technique in a vacuum chamber. Time-of-flight devices [Al / thin film sample / Indium Tin Oxide (ITO)] were irradiated by 355 nm laser with a photon density of 9.1 x 1015 cm"2. The applied bias was changed from 2 to 10 V.
[ 00203 ] The transient charge-carrier conductions of COF-366 and COF-66 were investigated by performing laser flash photolysis time- resolved microwave conductivity (FP-TRMC) measurements at 25 °C on irradiation with a 355-nm pulse laser at 3.5-3.6 mJ cm""2pulse_1. The transient conductivity profile shows a rapid rise in current with a maximum Σμ value of 4.1 X 10"5 cm2 V'V1 (COF-366) and 1.7 X 1CT5 cm2 V^s"1 (COF-66) at a photon density of 9.1 X 1015 photons cm"2, respectively (Figure 4a) . In order to determine the numbers of charge carriers, the time-of-flight transient was integrated at different bias voltages (Figure 4b) . The number of charge carriers estimated, by extrapolation from the bias at 0 V, were 3.2 X 109 (COF-66), 4.5 x 109 (COF-366), leading to the charge carrier generation yields Φ, expressed as the number of charge
carriers/photon — of 1.5 x 10~5 and 1.7 X 10"5, respectively. Time- of-flight transient current integration measurements performed on a 1.5-pm thick COF-366 or COF-66/poly (methyl methacrylate ) (PM A) films (60/40 in wt%) between Al and indium tin oxide (ITO) electrodes reveal hole conduction in the case of both COFs . It transpires that COF-366 and COF-66 are p-type semiconductors with hole . mobilities (∑/j) of 8.1 and 3.0 cm2 V"1s"1, respectively. The mobilities are high; both values are even higher than that of the inorganic amorphous silicon (~ 1 cm2 V"1s"1) , one order of magnitude higher than that of the 'state-of-the-art' PBTTT (0.72 cm2 V_1s"V and P3HT (0.1-0.5 cm2V_1s_1)5 and at least four orders of magnitude higher than those of common conjugated polymers (10"5~10"6 cm2 V-1s" thus marking (Figure 4a-b) COF-366 and COF-66 as the highest- mobility highly-ordered organic semiconductors yet known.
[00204 ] Generally, single crystals perform better in charge carrier transport as a result of the slowing down of the
translational motion of charge carriers at the interfaces, impurities, boundaries, etc. In our measurements, without the long distant translational motion of charge carriers, the mobilities of the charge carriers are consistent with those in the crystals. Given the high mobility values of (8.1 cm2 V^s"1) , the electric field strength of microwave in the cavity of TRMC measurement (~10 V cm"1) , and the turn over interval of the microwave in the cavity (9 GHz of the probing microwave and Q value of the cavity ~ 2500), the spatial size of the oscillating motion of charge carriers in the TRMC measurement was estimated as ~5 nm at a maximum. Thus, it is presumed that the value estimated by TRMC will coincide with the value in the single crystal, if the average ordered structure of microcrystalline COFs is longer than 5 nm. The high-mobility carrier conduction is related to the eclipsed arrangements and n- conjugated intra-layer structures, accounting for the high mobility present in COF-366 than in COF-66.
[ 00205 ] High Resolution solid-state nuclear magnetic resonance (NMR) : NMR spectra were recorded at ambient pressure on a Bruker DSX-300 spectrometer using a standard Bruker magic angle-spinning (MAS) probe with 4 mm (outside diameter) zirconia rotors. The magic angle was adjusted by maximizing the number and amplitudes of the signals of the rotational echoes observed in the 79Br MAS FID signa from KBr. Cross-polarization with MAS (CP-MAS) used to acquire 13C data at 75.47 MHz. The lH and 13C ninety- degree pulse widths were both 4 ps . The CP contact time varied from 1.5 to 5 ms . High power two-pulse phase modulation (TPPM) 1H decoupling was applied during data acquisition. The decoupling frequency corresponded to 72 kHz. The MAS sample- spinning rate was 10 kHz. Recycle delays between scans varied between 3 and 10 s, depending upon the compound as determined by observing no apparent loss in the 13C signal from one scan to the next. The 13C chemical shifts are given relative to tetramethylsilane as zero ppm, calibrated using the methylene carbon signal of adamantine assigned to 37.77 ppm as secondary reference. Various COFs and cores were studied using 13C NMR, and the tracings are provided as follows: TAPP (Figure 7), COF-366 (Figure 8), TBPP (Figure 9), and COF-66 (Figure 10).
[ 00206 ] X1B MAS Nuclear Magnetic Resonance Spectroscopy for TBPP and COF- 66 : Multiple quantum MAS (MQ/MAS) spectroscopy was used t acquire nB data at 96.29 MHz. The nB solution-state ninety-degree pulse width was 2 ps. TPPM :H decoupling was applied during data acquisition. The decoupling frequency corresponded to 72 kHz. The MAS spinning rate was 14.9 kHz. A recycle delay of 3 s was used. The nB chemical shifts are given relative to BF3 etherate as zero ppm, calibrated using aqueous boric acid at pH = 4.4 assigned to - 19.6 ppm as a secondary reference. The B MAS NMR tracing for TBPP is presented in Figure 11 and the nB MAS NMR tracing for COF-66 is presented in Figure 12.
[00207] Scanning Electron Microscopy Imaging (SEM) of COF-366 and COF-66: Samples of all 2D COFs were prepared by dispersing the material onto a sticky carbon surface attached to a flat aluminum sample holder. The samples were then gold coated using a Hummer 6.2 Sputter at 60 mTorr of pressure in an argon atmosphere for 45 seconds while maintaining 15 mA of current. Samples were analyzed on a JOEL JSM-6700 Scanning Electron Microscope using both the SEI and LEI detectors with accelerating voltages ranging from 1 kV to 15 kV. The SEM image of COF-366 is presented in Figure 13 and the SEM image of COF-66 is presented in Figure 14.
[00208] Thermal Gravimetric Analyses of COF-366 and COF-66:
Samples were run on a TA Instruments Q-500 series thermal
gravimetric analyzer with samples held in platinum pans under atmosphere of nitrogen. A 5 °C/min ramp rate was used. The thermal gravimetric analysis curve for COF-366 is shown in Figure 15, and the thermal gravimetric analysis curve for COF-66 is shown in Figure 16.
[00209] Conductivity Measurements of COF-366 and COF-66: The direct current (DC) electrical transport studies were conducted with a probe station at room temperature (25 °C) under ambient conditions with a computer-controlled analogue-to-digital
converter. Bottom-contact devices were fabricated for both COFs . Gold electrodes were thermally deposited on a Si/Si02 substrate with a 300-nm Si02 layer to create channels that are 2-10 pm in length. One drop of COF dispersion was drop-cast onto the
electrode, and the single pieces of two COFs were allowed to settle for a few seconds. The rest of the droplet was then quickly removed with flowing nitrogen and the devices blown thoroughly dry.
Conductivity measurements were carried out directly after
deposition using a standard probe station under ambient conditions. Figure 17 presents an I-V profile of a 2 um width Au gap with COF- 366 (light grey) and COF-66 (medium grey) . Inset: Gold electrode used for conductivity measurements . [00210] Gas Adsorption Measurements and Non-Local DFT Pore Size Distributions for COF-366 and COF-66: Low-pressure Ar adsorption measurements were performed on an Autosorb-1 (Quantachrome) volumetric analyzer. The samples were outgassed to 10"6 Torr. Helium was used for the estimation of the dead volume, assuming that it is not adsorbed at any of the studied temperatures. A liquid Ar bath was used for adsorption measurements at 87 K. To provide high accuracy and precision in determining P/Po, the saturation pressure Po was measured throughout the Ar analyses by means of a dedicated saturation pressure transducer, which allowed us to monitor the vapor pressure for each data point. Ultra-high-purity grade Ar and He (99.999% purity) were used throughout the adsorption
experiments. The COF-366 and COF-66 argon isotherms (Figure 18 and Figure 19) show significant uptake in the low-pressure region {P/PQ < 0.1), which is indicative of the porous character. The Langmuir (Brunauer-Emmett-Teller (BET) ) surface areas for COF-366 and COF-66 were calculated to be 950 (735) and 610 (360) m2 g"1, respectively. Estimated pore volumes based on a Dubinin-Raduskavich (DR)-plot method for COF-366 and COF-66 are 0.32 and 0.20 cm3 g~\
respectively .
[00211] To estimate pore size distributions for COF-366 and COF- 66, Ar isotherms were analyzed using nonlocal density functional theory (NLDFT) implementing a hybrid kernel for Ar adsorption at 87 K based on a zeolite/silica model containing spherical/cylindrical pores. A comparison between the NLDFT predicted curve (grey line) with actual COF-366 isotherm data (dark circles) is presented in Figure 20. From which, the pore size distribution for COF-366, based on a NLDFT fit to the Ar - adsorption data for COF-366, is presented, in Figure 21. A comparison between the NLDFT predicted curve (dark line) with COF-66 isotherm data (dark circles) is presented in Figure 22. From which, .the pore size distribution for COF-66, based on a NLDFT fit to the Ar adsorption data for COF-66, is presented in Figure 23.
[00212] UV-Vis Diffuse Reflectance and Fluorescence Spectra of COF-366 and COF-66: UV-Vis diffuse reflectance spectra (in Kubelka- Munk unit) were recorded on a JASCO model V-570 spectrometer equipped with integration sphere. Fluorescence Spectra were recorded on a Hitachi F-2700 fluorescence spectrometer.
[00213] In the UV-Vis diffuse reflectance spectra, COF-66 and COF-366 exhibited an absorption band at 402 and 417 nm,
respectively (light grey lines in Figure 23A-B) , originated to the B band. The band is blue-shifted by 17 and 19 nm from that of the monomer precursors (solid; 416 and 430 nm; medium grey lines in Figure 24A-B) (in DMF; 420 and 436 nm; dark grey lines in Figure 24A-B) . This blue shift indicates the formation of H-aggregates of porphyrin units in the stacked structures, which is ih good agreement with proposed structures.
[00214] There was only a slight difference between COF-366 and COF-66 upon excitation at 280 nm at 25 °C. (See Figure 25, wherein COF-366 is represented by a dash line and COF-66 is represented as a solid line) .
[00215] FP-TFMC Profiles at Different Photon Densities: FP-TRMC profiles (Figure 26) of COF-366 (open circles) and COF-66
(diamonds) at 25 °C on irradiation with a 355-nm pulse laser with different photon densities: 3.6 X 1016, 2.7 x 1016, 1.8 x 1016, 9.1 x 1015, 6.4 x 1015, 4.6 x 1015, and 1.8 1015 photons cm"2, respectively. The Φ∑μ values were almost constant when the photon density decreased to the level of 1015 photons cm-2. Figure 26 shows there is a small dependence on the excitation density of photons for the COFs . This implies that the bimolecular (second order) recombination processes are not the dominant processes in the present case, and even at the lower ' excitation density, almost identical values of conductivity were observed for the materials.
[00216] Transient Photoabsorption of COF-66 and COF-366 Bound in PMMA Matrix. COF-366 and COF-66 bound in a PMMA matrix (COF: P MA = 2:3 w/w) were exposed to the 355-nm line of Nd: YAG laser (2.7 1016 cm"2) . From which, kinetic traces of transient photoabsorption were plotted and decay constants were calculated. In Figure 27, the light grey, dark grey, medium grey, and black lines presents the decays at 460 and 540 nm of COF-66, 440 and 510 nm of COF-366, respectively. COF-366 and COF-66 demonstrate almost identical decay constants for both bleaching and absorption processes. [00217] End-of-Pulse Photoabsorption of COF-66 and COF-366 Bound in PMMA Matrix. COF-366 and COF-66 bound in a PMMA matrix (COF: PMMA = 2:3 w/w) were exposed to the 355-nm line of Nd: YAG laser (2.7 1016 cm"2) . From which, traces of end-of-pulse
photoabsorption were plotted. Transient photoabsorption spectra at the end-of-pulse observed for COF-366 (light grey) and COF-66 (dark grey) are presented in Figure 28. In Figure 28, the new absorption bands around 540 and 510 nm in the transient spectra (for COF-66 and COF-366, respectively) , indicates the porphyrin cores form radical cations.
[00218] FP-TRMC Profiles at Different Excitation Powers: COF-66 and COF-366 bound in a PMMA matrix (COF: PMMA = 2:3 w/w) were exposed to a 355-nm line of Nd: YAG laser where the excitation power of the laser was varied from 0.64 to 3.6 1016 cm"2. Figure 29 presents the normalized FP-TRMC transient photoabsorption spectra for COF-66 and COF-366 for 0.64 (light/medium grey), 0.91
(dark grey), 1.8 (medium grey), 2.7 (black), and 3.6 (light grey) 1016 cm"2 excitation powers.
[00219] Normalized Decays of FP-TRMC Transient and TAS Signal of COF-66 and COF-366: COF-66 and COF-366 bound in PMMA matrix
(COF: MMA = 2:3, w/w) were exposed to the 355-nm line of Nd: YAG laser (2.7 1016 cm"2) . The normalized decays were then
determined. Figure 30 presents the normalized decays of FP-TRMC transient (light grey) and TAS signal (dark grey) at 440 nm for COF-66 (a, b) and COF-366 (c, d) . Figure 30 indicates that the transients show good agreement with each other in the shorter time region; therefore, it is possible to obtain the 'pure' conductivity values in this region by subtracting the contribution from the thermal effect. Figure 30 (b, d) also shows the deviation in the two transient curves, especially in the longer time region. Moreover, the lifetimes of the charged species for both COFs are ~80 ps or even longer in spite of the higher mobility of the charge carriers. The lifetime of free charge carriers is the primary factor in the promotion of the effective charge carrier separation. Therefore, it is possible to consider fabricating a future hetero-j unction type solar cell based on the COFs disclosed herein due to
unexpectedly superior charge carrier separation. [00220] Current Transients Observed under Positive Bias Mode in TOF Measurement of COF-66 and COF-366: Current transients were measured under the positive bias mode at a variety of electric, field strengths in the TOF measurement for COF-66 and COF-366.
Excitation was carried out at 355 nm, 9.1 x 1015 photons cm-2. The TOF measurements for (a) COF-66 and (b) COF-366 are presented in Figure 31. The linear plot of current transients under positive and negative bias modes at 1.1 x 104 V-cnf1 for COF-66 is presented in Figure 31 (c) .
[00221] Dependence of hole drift mobility on applied electric field strength observed in a COF-66 film: In Figure 32, the mobility decreases with an increase in the applied electric field strength (£) , indicating "big" barriers for the hopping of charge carriers present along the path of the translational motion with a large distribution in the hopping distances. It is presumed that the negative slope in Figure 31 is attributed to the presence of grain boundaries in the sample (see Figure 32) . By taking the intercept from the hole drift mobility data, the zero-field limit mobility value is estimated to be 0.05 cm2 V"1s"1, which is close to the value in the TRMC experiment.
[00222] Correlation Between the Values of Electric Conductivity Estimated by the Non-contact Microwave Conductivity Measurement and the Conventional Four-contacts/Hall Effect Measurement Techniques :
There is a correlation between the values of electric conductivity estimated by the non-contact microwave conductivity measurement and the conventional four-contacts/Hall effect measurement techniques in inorganic electric semi-conducting or conducting materials (See Figure 33: Si (squares), Ti02 (circles), and Sn02 (solid circles) with a variety of dopant concentrations.
[00223] Our findings open up an avenue for exploiting plastic electronics and optoelectronics, based on COFs, which can be engineered at a molecular level with a wide range of n-conjugated networks .
[00224] Although a number of embodiments and features have been described above, it will be understood by those skilled in the art that modifications and variations of the described embodiments and features may be made without departing from the teachings of the disclosure or the scope of the subject matter as defined by the appended claims.

Claims

WHAT IS CLAIMED IS:
1. A conductive covalent-organic framework (COF) comprising: a plurality of cores, wherein each core forms at least one covalent bond to at least one linking moiety; and
wherein the COF comprises a conductive core moiety and/or comprises a conductive linking moiety.
2. The conductive COF of claim 1, wherein one or more cores are substantially planar and contain one or more substituted or unsubstituted aryls, substituted or unsubstituted aromatic heterocycles , substituted or unsubstituted alkenes, or combinations thereof .
3. The conductive COF of claim 1, wherein one or more cores has a structure selected from the group consisting of Formula I, II, III, IV, and V:
Figure imgf000087_0001
(I) ( I D
Figure imgf000088_0001
(V)
wherein :
Rx-R59 are independently selected from the group consisting of H, D, FG, (Ci-C20) alkyl, substituted (Ci-C20) alkyl, (Ci-C20) alkenyl, substituted (C1-C20) alkenyl, (C1-C20) alkynyl, substituted (Ci~ C2o)alkynyl, hetero- (C1-C20) alkyl, substituted hetero- (C1-C20) alkyl, hetero- (C1-C20) alkenyl, substituted hetero- (C1-C20) alkenyl, hetero- (C1-C20) alkynyl, substituted hetero- (C1-C20) alkynyl, (Ci~
C2o) cycloalkyl, substituted (C1-C20) cycloalkyl, aryl, substituted aryl, heterocycle, substituted heterocycle, wherein R5 and R6 are linked together to form a substituted or unsubstituted ring selected from the group consisting of cycloalkyl, aryl and heterocycle, wherein R7 and R8 are linked together to form a substituted or unsubstituted ring selected from the group
consisting of cycloalkyl, aryl and heterocycle, wherein R9 and R10 are linked together to form a substituted or unsubstituted ring selected from the group consisting of cycloalkyl, aryl and heterocycle, and wherein R11 and R12 are linked together to form a substituted or unsubstituted ring selected from the group
consisting of cycloalkyl, aryl and heterocycle;
Xx-X13 are independently selected from the group consisting of carbon, oxygen, sulfur, silicon, phosphorous, and nitrogen;
Yx-Y7 are independently selected from the group consisting of H, D, and FG;
A1-A21 are independently selected from the group consisting of C, N, Si and P;
with the proviso that a X may not exceed its maximum valence by binding a Y, or Rx-R4; and
with the proviso that a A may not exceed its maximum valence by binding a R.
4. The conductive COF of claim 3, wherein one or more cores has a structure of Formula
Figure imgf000089_0001
wherein,
Rx-R12 are independently selected from the group consisting of H, D, FG, (Ci-C6) alkyl, substituted (Ci~ C6)alkyl, (Ci-C6) alkenyl, substituted (Ci-C6) alkenyl, (Ci-C6) alkynyl, substituted (Ci~
C6)alkynyl, hetero- (Ci-C6) alkyl, substituted hetero- (Ci-C6) alkyl, hetero- (Ci-C6) alkenyl, substituted hetero- (Ci-C6) alkenyl, hetero- (Ci~ C6) alkynyl, substituted hetero- (Ci-C6) alkynyl, (Ci-C6) cycloalkyl, substituted (Ci-C6) cycloalkyl, aryl, substituted aryl, heterocycle, substituted heterocycle, wherein R5 and R6 are linked together to form a substituted or unsubstituted ring selected from the group consisting of cycloalkyl, aryl and heterocycle, wherein R7 and R8 are linked together to form a substituted or unsubstituted ring selected from the group consisting of cycloalkyl, aryl and heterocycle, wherein R9 and R10 are linked together to form a substituted or unsubstituted ring selected from the group
consisting of cycloalkyl, aryl and heterocycle, and wherein R11 and R12 are linked together to form a substituted or unsubstituted ring selected from the group consisting of cycloalkyl, aryl and heterocycle ;
Xx-X8 are independently selected from the group consisting of carbon and nitrogen;
Yx-Y4 are independently selected from the group consisting of H, D, and FG; and
with the proviso that a X may not exceed its maximum valence by binding a Y, or Rx-R4.
5. The conductive COF of claim 4, wherein one or more cores has a structure of Formula lb:
Figure imgf000090_0001
wherein,
Rx-R4, R80-R95 are independently selected from the group consisting of H, D, FG, (Ci-C6) alkyl, substituted (Ci~ C6)alkyl, (Ci~ C6)alkenyl, substituted (Ci-C6) alkenyl, (Ci-C6) alkynyl, substituted (Ci-C6) alkynyl, hetero- (Ci-C6) alkyl, substituted hetero- (Ci-C6) alkyl, hetero- (Ci-C6) alkenyl, substituted hetero- (Ci-C6) alkenyl, hetero- (Ci~ C6) alkynyl, substituted hetero- (Ci-C6) alkynyl, (Ci-C6) cycloalkyl, substituted (Ci-C6) cycloalkyl, aryl, substituted aryl, heterocycle, and substituted heterocycle;
Xx-X4 are independently selected from the group consisting of carbon and nitrogen; and
with the proviso that a X may not exceed its maximum valence by binding a R.
6. The conductive COF of claim 4, wherein one or more cores structure of Formula la:
Figure imgf000091_0001
( l a )
wherein,
R1-R12, R60-R79 are independently selected from the group consisting of H, D, FG, (Ci-C6) alkyl, substituted (Ci- C6) alkyl, (Ci C6)alkenyl, substituted (Ci-C6) alkenyl, (Ci-C6) alkynyl, substituted (Ci-C6) alkynyl, hetero- (Ci-C6) alkyl, substituted hetero- (Ci-C6) alkyl, hetero- (Ci-C6) alkenyl, substituted hetero- (Ci-C6) alkenyl, hetero- (Ci~ C6) alkynyl, substituted hetero- (Ci-C6) alkynyl, (Ci-C6) cycloalkyl, substituted (Ci-C6) cycloalkyl, aryl, substituted aryl, heterocycle, substituted heterocycle, wherein R5 and R6 are linked together to form a substituted or unsubstituted ring selected from the group consisting of cycloalkyl, aryl and heterocycle, wherein R7 and R8 are linked together to form a substituted or unsubstituted ring selected from the group consisting of cycloalkyl, aryl and heterocycle, wherein R9 and R10 are linked together to form a substituted or unsubstituted ring selected from the group
consisting of cycloalkyl, aryl and heterocycle, and wherein R11 and R12 are linked together to form a substituted or unsubstituted ring selected from the group consisting of cycloalkyl, aryl and heterocycle .
7. The conductive COF of claim 6, wherein one or more cores has a structure of Formula la:
Figure imgf000093_0001
( l a )
wherein,
Rx-R12, R60-R61, R63-R66, R68-R71, R73-R76, R78-R79 are H.
Rb , Rb/, R'% and R" are FG.
8. The conductive COF of claim 1, wherein one or more cores has a linking cluster that contains at least one heteroatom.
9. The conductive COF of claim 8, wherein the heteroatom is selected from the group consisting of B, 0, N, S, Si, P, Al, F, CI, Br, and I .
10. The conductive COF of claim 9, wherein the heteroatom is selected from the group consisting of B, and N.
11. The conductive COF of claim 8, wherein at least one linking
Bx°yRz
cluster has the formula ¾ ; wherein x is number from 1 to 2, y is a number from 1 to 8, z is a number from 1 to 8, and R is selected from the group consisting of H, D, and FG .
12. The conductive COF of claim 1, wherein one or more linking moieties has an organic-based parent chain that is comprised of one or more substituted or unsubstituted rings; wherein one or more of these rings is further substituted with one or more functional groups, including additional substituted or unsubstituted
hydrocarbons and heterocycle groups, or a combination thereof; and wherein the linking moiety contains at least one linking cluster.
13. The conductive COF of claim 1, wherein one or more linking moieties has a structure selected from the group consisting of Formula II, III, IV, V, VII, VIII, IX, and X:
Figure imgf000095_0001
Figure imgf000095_0002
93
Figure imgf000096_0001
VI I ) (VIII) ( I X ) , and
Figure imgf000096_0002
(X)
wherein :
A1-A56 are independently selected from the group consisting of C, Si, N and P;
n is a number from 1 to 8 ;
T is selected from the group consisting of an atom that can assume tetrahedral molecular geometry, a tetrahedral group, and a tetrahedral cluster; R -R are independently selected from the group consisting of H, D, FG, (Ci-C20) alkyl, substituted (Ci-C20) alkyl, (Ci-C20) alkenyl, substituted (C1-C20) alkenyl, (C1-C20) alkynyl, substituted (Ci~
C2o)alkynyl, hetero- (C1-C20) alkyl, substituted hetero- (C1-C20) alkyl, hetero- (C1-C20) alkenyl, substituted hetero- (C1-C20) alkenyl, hetero- (C1-C20) alkynyl, substituted hetero- (C1-C20) alkynyl, (Ci~
C2o) cycloalkyl, substituted (C1-C20) cycloalkyl, aryl, substituted aryl, heterocycle, and substituted heterocycle;
X9-X14 are independently selected from the group consisting of carbon, oxygen, sulfur, silicon, phosphorous, and nitrogen;
Y5-Y7 are independently selected from the group consisting of H, D, and FG;
with the proviso that a X may not exceed its maximum valence by binding a Y; and
with the proviso that an A may not exceed its maximum valence by binding a R.
13. The conductive COF of claim 12, wherein one or more linking moieties has a structure of Formula IV:
Figure imgf000097_0001
(IV)
wherein,
A -A are independently either C or N;
R35—R44 are independently selected from the group consisting of H, D, FG, (Ci-C6) alkyl, substituted (Ci-C6) alkyl, (Ci-C6) alkenyl, substituted (Ci-C6) alkenyl, (Ci-C6) alkynyl, substituted (Ci~
C6) alkynyl, hetero- (C1-C5) alkyl, substituted hetero- (C1-C5) alkyl, hetero- (C1-C5) alkenyl, substituted hetero- (C1-C5) alkenyl, hetero- (Ci~ C5) alkynyl, substituted hetero- (C1-C5) alkynyl, (Ci-C8) cycloalkyl, substituted (Ci-C8) cycloalkyl, aryl, substituted aryl, heterocycle, and substituted heterocycle; and with the proviso that an A may not exceed its maximum valence by binding a R.
14. The conductive COF of claim 13, wherein one or more linking moieties has a structure of Formula IV:
Figure imgf000098_0001
wherein,
A16-A21 are C;
R36-R48, R41-R43 are H; and
R35, R44, R39-R40 are FG.
Figure imgf000098_0002
Figure imgf000099_0001
16. The conductive COF of claim 13, wherein one or more linking moieties has a structure of Formula VII:
Figure imgf000099_0002
(VII)
r
wherein,
A28-A30 are independently either C or N;
R96—R101 are independently selected from the group consisting of H, D, FG, (Ci-C6) alkyl, substituted (Ci-C6) alkyl, (Ci-C6) alkenyl, substituted (Ci-C6) alkenyl, (Ci-C6) alkynyl, substituted (Ci~
C6)alkynyl, hetero- (Ci-C5) alkyl, substituted hetero- (Ci-C5) alkyl, hetero- (Ci-C5) alkenyl, substituted hetero- (C1-C5) alkenyl, hetero- (Ci~ C5) alkynyl, substituted hetero- (C1-C5) alkynyl, (Ci-C8) cycloalkyl, substituted (Ci-C8) cycloalkyl, aryl, substituted aryl, heterocycle, and substituted heterocycle; and
with the proviso that an A may not exceed its maximum valence by binding a R.
17. The conductive COF of claim 16, wherein one or more linking moieties has a structure of Formula VII:
Figure imgf000100_0001
(VII)
wherein,
R96, R98-R99, R101 are independently either an H or D; and R97 and R100 are FG .
18. The conductive COF of claim 17, wherein one or more linking moieties has a structure selected from the group consisting of:
Figure imgf000100_0002
Figure imgf000101_0001
19. The conductive COF of claim 1, wherein one or more linking moieties has a linking cluster that contains at least one
heteroatom .
20. The conductive COF of claim 19, wherein the heteroatom is selected from the group consisting of B, 0, N, S, Si, P, Al, F, CI, Br, and I .
21. The conductive COF of claim 20, wherein the heteroatom is selected from the group consisting of B, 0, and N.
22. The conductive COF of claim 21, wherein at least one linking formula "I¾—BxOyRz
cluster has the , wherein x is number from 1 to 2, y is a number from 1 to 8, z is a number from 1 to 8, and R is selected from the group consisting of H, D, and FG .
23. The conductive COF of claim 19, wherein the linking cluster is selected from the group consisting of acyl halide, halide, ester, carboxylic acid, amine, hydroxyl, ether, and amide.
24. The conductive organic-framework of claim 1, wherein the framework is post-synthesis functionalized to comprise a metal or conductive moiety.
25. The conductive organic-framework of claim 1, wherein the COF has hole conducting mobilities of at least 3.0 cm2V_1s_1.
26. The conductive organic-framework of claim 25, wherein the COF has hole conducting mobilities of at least 8.0 cm2V_1s_1.
27. The conductive organic-framework of claim 1, wherein the COF can hold a charge for at least 75 μβ .
28. A flexible display comprising the conductive organic- framework of claim 1.
29. A semiconductor comprising the conductive organic-framework of claim 1.
30. A gas storage device comprising the conductive organic- framework of claim 1.
31. A chemical sensor comprising the conductive organic-framework of claim 1.
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