CN105970299A - Novel carbon two-dimensional planar crystal and preparation method thereof - Google Patents
Novel carbon two-dimensional planar crystal and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/60—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape characterised by shape
- C30B29/64—Flat crystals, e.g. plates, strips or discs
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B25/00—Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/02—Elements
Abstract
The invention discloses a novel carbon two-dimensional planar crystal and a preparation method thereof. The novel carbon two-dimensional planar crystal comprises a sp2 state carbon atom plane four-membered ring and plane six-membered ring. Nonadjacent three edges of the six-membered ring respectively share with the four-membered ring and the other three edges are independent. A group of opposite sides of the four-membered ring share with the six-membered ring and the other group of opposite sides of the four-membered ring are independent. In a crystal plane structure, carbons of the crystal have bonding atom orbits which are slightly transformative sp2 hybrid orbits and form a plane conjugated extended pi bond structure. Each one of carbon atoms are bonded to three carbon atoms through three sigma bonds of the sp2 hybrid orbits. Two sigma bonds of carbon atoms at the plane edge are connected to two carton atoms. One sigma bond point to the exterior of the plane is connected to a hydrogen atom or other single-bond atom or an atom group. The novel carbon two-dimensional planar crystal has a potential application value in fields of semiconductors, electron devices, life science and medical materials and has high social and economic benefits.
Description
Technical field
The present invention relates to field of new, particularly relate to carbon materials, be specifically related to a kind of New Type of Carbon two dimensional surface crystal
And preparation method thereof.
Background technology
Carbon materials is an important branch of Material Field, from last century Mo to this century, market continues to bring out out
New Type of Carbon allotrope and carbon element new material.Before the eighties in 20th century, the allotrope of the carbon that people know only has stone
Ink, diamond and 3 kinds of amorphous carbon, be followed by even being found that the allotrope of new carbon the eighties in 20th century: fullerene (carbon
60, C60) and CNT.The Graphene (Graphene) found for particularly 2004 is that the two dimensional surface of a kind of carbon is brilliant
Body, has broken the concept of conventional physical, defines theory and technology new in science.Graphene is that one has many singularitys
The new material of matter, has caused the development of physics and chemical theory, has also caused the revolutionary change of material science.Graphene is people
The two dimensional surface crystal of first carbon that finds, the two dimensional surface crystal of the carbon that other structure is different can or can not be also had to exist？
This is a very important scientific theory problem, also has important potential using value.Inventor's grinding at grapheme material
Being found that a class New Two Dimensional flat crystal of carbon in studying carefully, plane hexatomic ring and four-membered ring by carbon form, and may have not
A kind of crystal formation, the simply one of which crystal formation that the present invention enumerates.This crystal is quasiconductor, electronic device, life sciences and doctor
Learn the numerous areas such as material and have potential using value, it is contemplated that the highest Social benefit and economic benefit can be brought.
Inventor retrieves the patent of a New Two Dimensional stratiform material with carbon element:
Application number: 201410200817.3；Applicant: Shanghai Communications University；Denomination of invention: a kind of New Two Dimensional stratiform carbon material
Material；Summary: the present invention relates to a kind of New Two Dimensional stratiform material with carbon element, this material is to produce some carbon sky in graphene sheet layer
The all two-dimensional layered structures formed after Wei.Carbon atom planar forms the atom ring of hexatomic ring and other number and is connected
Arrangement pattern, thus constitute and a kind of there is fanciful structures and excellent mechanical, the material of electrical properties.Compared with prior art,
The present invention use simple to operate, low cost, calculating accurately, be widely used and reproducible first-principles calculations method, from
Atomic scale provides the structure of this New Two Dimensional stratiform material with carbon element.This material can be as potential electronics of new generation in future
Element or the candidate material of transistor, have important realistic price and Research Significance.
Above-mentioned patent design of material software digs out some regular or irregular incompleteness in the crystal structure of Graphene,
The Graphene crystal being so designed that out.All two-dimensional layer material with carbon element samples that this patent provides in an embodiment are all to use material
Design software Materials Studio draws, and is not truly synthesized, does not provides synthetic method, more do not have
The sign of body.Mode as concrete in this patent working is mentioned: " a kind of New Two Dimensional stratiform carbon related in [0038] present invention
The structure of material uses the CASTEP module carried in the Materials Studio software model to manually building to carry out structure
Obtain after optimization.”.
Summary of the invention
It is an object of the present invention to provide a kind of New Type of Carbon two dimensional surface crystal, i.e. 4-6 carbene two dimensional surface crystal (is sent out
A person of good sense names), and characterize its basic construction unit, planar structure and plane parameter.
Another one purpose of the present invention is the preparation method disclosing this New Type of Carbon two dimensional surface crystal.
First purpose of the present invention is achieved in that
New Type of Carbon two dimensional surface crystal disclosed by the invention (4-6 carbene two dimensional surface crystal), its basic structural unit is by sp2State
The planar four-element ring of carbon atom and plane hexatomic ring composition, the length of side of planar four-element ring and plane hexatomic ring is close, and the length of side is about
0.148 ~ 0.152 nanometer；
New Type of Carbon two dimensional surface crystal, in its planar structure, non-conterminous three limits of plane hexatomic ring respectively with a plane four
Ring is shared, and its excess-three bar limit is for individually to occupy；One group of opposite side in planar four-element ring is shared with a plane hexatomic ring respectively,
One group of opposite side additionally is for individually to occupy.
The four edges of described rectangle two dimensional surface crystal has two kinds of different structures, and the groove on a kind of limit is by the six of projection
Ring-four-membered ring-hexatomic ring isolation, the groove on another kind of limit is isolated by the hexatomic ring of projection.
New Type of Carbon two dimensional surface crystal, in its planar structure, the inside of this crystal includes the dodecagon distributed alternately
Cavity, cavity diameter be about 0.536 nanometer (5.36).
New Type of Carbon two dimensional surface crystal, in its planar structure, the bonding atomic orbital of the carbon forming this crystal is slightly to become
The sp of shape2Hybrid orbital, forms the big π bond structure of conjugation；Each carbon atom passes through sp23 σ-keys of hybrid orbital and 3 carbon
Atom connects, and 2 σ-keys and 2 carbon atoms of the carbon atom on flat edge edge are connected, and point to an out-of-plane σ-key former with hydrogen
Son or the atom of other singly-bound or atomic group connect.
New Type of Carbon two dimensional surface crystal, in addition to plane configuration, it is also possible to for curved, wavy, tubular and spherical.
Another object of the present invention is achieved in that
The preparation method of New Type of Carbon two dimensional surface crystal, comprises the following steps:
(1) Copper Foil after polishing and cleaning process is put into the U-shaped quartz ampoule of microreactor, as preparing crystal film
Substrate；
(2) opening vacuum pump, evacuation 5 minutes, is-0.1 mPa to negative pressure, then leads to nitrogen to normal pressure；
(3) open temperature control power supply, program of heating is set, open heating power supply, be warming up to 300 DEG C ~ 800 DEG C；
(4) with noble gas as carrier gas, benzene vapour is brought in the U-shaped quartz ampoule of microreactor, control benzene by bath temperature
Vapour pressure, control to bring into the amount of benzene vapour of microreactor by load volume；
(5) in the U-shaped quartz ampoule of microreactor, benzene vapour resolves into naked carbon phenyl ring free radical and hydrogen, naked carbon phenyl ring free radical with
Conjugatedπbond combines, and is deposited into crystal film on Copper Foil, also has crystal film to generate at quartz glass inside pipe wall simultaneously；
(6), depending on the area of response time visual response temperature and U-shaped quartz ampoule and Copper Foil, react and within 3 to 5 minutes, obtain monolayer crystalline substance
Body, every layer thickness is about 0.34 nanometer；Time is the longest, and the number of plies of the crystal film of generation is the most；
(7) question response is complete, and temperature is down to room temperature, takes out Copper Foil, separates with chemical dispersion solvent and transfer crystal film；At U
Adding chemical dispersion solvent in type quartz ampoule, the crystal film on tube wall separates with tube wall, is suspended in chemical dispersion solvent；With
The crystal film of upper two ways isolated is all New Type of Carbon two dimensional surface crystal film.
Chemical dispersion solvent described in step (7) is N,N-dimethylformamide.
The principles of chemistry and the chemistry of New Type of Carbon two dimensional surface crystal disclosed by the invention (4-6 carbene two dimensional surface crystal) are anti-
Should be as follows:
(1) benzene molecular resolve under the conditions of suitable temperature, pressure, atmosphere, catalyst etc. naked carbon phenyl ring free radical and
Hydrogen:
Two naked carbon phenyl ring free radicals be combined with each other with conjugatedπbond, formed following structure New Type of Carbon two dimensional surface crystal point
Sub-piece:
Naked carbon phenyl ring free radical continues the molecule fragment (4-6 carbene two dimensional surface crystal) with New Type of Carbon two dimensional surface crystal with altogether
Yoke π bond is closed, and the molecule fragment of New Type of Carbon two dimensional surface crystal constantly expands, and ultimately forms the bigger New Type of Carbon two dimension of area and puts down
Faceted crystal.
Compared with the two dimensional crystal Graphene of existing carbon, the positive effect of the present invention is:
1, inventor is found that a class New Two Dimensional flat crystal of carbon in the research of grapheme material, by the plane of carbon
Hexatomic ring and four-membered ring composition, the bonding atomic orbital of carbon is the sp slightly deformed2Hybrid orbital, is formed and is conjugated big π bond structure.
New Type of Carbon two dimensional surface crystal is different from the structure of Graphene, thus has different character.Such as, in New Type of Carbon flat crystal
There is bigger hole, thus have the density less than Graphene, and bigger specific surface.The electron conduction band of New Type of Carbon flat crystal
Different from Graphene with forbidden band energy level, thus hold promise as the material that mixes of Graphene, manufacture diode and triode.Novel
Though the stability of carbon two dimensional surface crystal is not so good as Graphene, but therefore has the chemical property more active than Graphene, at chemistry
It is applied with in biology.
Accompanying drawing explanation
The construction unit of Fig. 1 New Type of Carbon two dimensional surface crystal and molecule fragment figure；
Fig. 2 New Type of Carbon two dimensional surface crystal structure figure；
Fig. 3 prepares the microreactor installation drawing of New Type of Carbon two dimensional surface crystal；
The SEM structure chart of crystal film on Fig. 4 Copper Foil；
The SEM structure chart of the crystal film on Fig. 5 quartz tube wall.
Detailed description of the invention
For structure and the essence of the present invention are better described, provide New Type of Carbon two dimensional surface brilliant by the form of embodiment below
The structure of body and the preparation method of this crystal, example is served only for explaining the present invention, is not intended to limit the institute of the present invention
Possible preparation method.
Embodiment 1
New Type of Carbon two dimensional surface crystal disclosed by the invention (4-6 carbene two dimensional surface crystal), its basic structural unit is by sp2State
The planar four-element ring of carbon atom and plane hexatomic ring composition, the length of side of planar four-element ring and plane hexatomic ring is close, and the length of side is
0.148 ~ 0.152 nanometer；
New Type of Carbon two dimensional surface crystal, in its planar structure, non-conterminous three limits of plane hexatomic ring respectively with a plane four
Ring is shared, and its excess-three bar limit is for individually to occupy；One group of opposite side in planar four-element ring is shared with a plane hexatomic ring respectively,
One group of opposite side additionally is for individually to occupy.
The four edges of described rectangle two dimensional surface crystal has two kinds of different structures, and the groove on a kind of limit is by the six of projection
Ring-four-membered ring-hexatomic ring isolation, the groove on another kind of limit is isolated by the hexatomic ring of projection.
New Type of Carbon two dimensional surface crystal, in its planar structure, the inside of this crystal includes the dodecagon distributed alternately
Cavity, cavity diameter be about 0.536 nanometer (5.36).
New Type of Carbon two dimensional surface crystal, in its planar structure, the bonding atomic orbital of the carbon forming this crystal is slightly to become
The sp of shape2Hybrid orbital, forms the big π bond structure of conjugation；Each carbon atom passes through sp23 σ-keys of hybrid orbital and 3 carbon
Atom connects, and 2 σ-keys and 2 carbon atoms of the carbon atom on flat edge edge are connected, and point to an out-of-plane σ-key former with hydrogen
Son or the atom of other singly-bound or atomic group connect.
New Type of Carbon two dimensional surface crystal, in addition to plane configuration, it is also possible to for curved, wavy, tubular and spherical.
Embodiment 2
The present embodiment uses the miniature Catalyst Characterization System of PX200 (manufacture of Tianjin Peng Xiang Science and Technology Ltd.), and experimental provision is such as
Shown in Fig. 3, use high-purity carbon dioxide is carrier gas, high pure benzene (> 99.5%) it is raw material, 20 microns of thick high-purity Copper Foils are substrate,
Chemical dispersant is N,N-dimethylformamide.Concrete preparation process is as follows:
The preparation method of New Type of Carbon two dimensional surface crystal, comprises the following steps:
(1) Copper Foil after polishing and cleaning process is put into the U-shaped quartz ampoule of microreactor, as preparing crystal film
Substrate；
(2) opening vacuum pump, evacuation 5 minutes, is-0.1 mPa to negative pressure, then leads to nitrogen to normal pressure；
(3) open temperature control power supply, program of heating is set, open heating power supply, be warming up to 600 DEG C；
(4) with carbon dioxide as carrier gas, benzene vapour is brought in the U-shaped quartz ampoule of microreactor, control benzene by bath temperature
Vapour pressure, control to bring into the amount of benzene vapour of microreactor by load volume；
(5) in the U-shaped quartz ampoule of microreactor, benzene vapour resolves into naked carbon phenyl ring free radical and hydrogen, naked carbon phenyl ring free radical with
Conjugatedπbond combines, and is deposited into crystal film on Copper Foil, also has crystal film to generate at quartz glass inside pipe wall simultaneously；
(6) at 600 DEG C and 0 mPa(normal pressure) carbon dioxide environment under react 50 minutes；
(7) question response is complete, and temperature is down to room temperature, takes out Copper Foil, separates with chemical dispersion solvent (DMF)
With transfer crystal film；Adding chemical dispersion solvent in U-shaped quartz ampoule, the crystal film on tube wall separates with tube wall, suspends
In chemical dispersion solvent；The crystal film of both the above mode isolated is all New Type of Carbon two dimensional surface crystal film.Thin
Film is the transparent crystal structure of multilamellar, and thickness is about 50 nanometers.
The New Type of Carbon two dimensional surface crystal that embodiment 1 prepares, its crystal structure figure is as shown in Figure 2.Fig. 4 is on Copper Foil
Scanning electron microscope (SEM) figure of the crystal film peeled off, Fig. 5 is the scanning electron of the crystal film peeled off on quartz tube wall
Microscope (SEM) figure.
Embodiment 3
The present embodiment uses the miniature Catalyst Characterization System of PX200 (manufacture of Tianjin Peng Xiang Science and Technology Ltd.), and experimental provision is such as
Shown in Fig. 3, use high pure nitrogen is carrier gas, high pure benzene (> 99.5%) it is raw material, 20 microns of thick high-purity Copper Foils are substrate, chemistry
Dispersant is N,N-dimethylformamide.Concrete preparation process is as follows:
The preparation method of New Type of Carbon two dimensional surface crystal, comprises the following steps:
(1) Copper Foil after polishing and cleaning is put into the U-shaped quartz ampoule of microreactor, prepare the substrate of crystal film；
(2) open vacuum pump, evacuation 5 minutes, to negative pressure-0.1 mPa, then lead to nitrogen to normal pressure；
(3) open temperature control power supply, program of heating is set, open heating power supply, be warming up to 500 DEG C；
(4) nitrogen buffer gas, brings the U-shaped quartz ampoule of microreactor into by benzene vapour, is controlled the steam of benzene by bath temperature
Pressure, controls to bring into the amount of the benzene vapour of microreactor by load volume；
(5) in the U-shaped quartz ampoule of microreactor, benzene vapour resolves into naked carbon phenyl ring free radical and hydrogen, naked carbon phenyl ring free radical with
Conjugatedπbond combines, and is deposited into crystal film on Copper Foil, also has crystal film to generate at quartz glass inside pipe wall simultaneously；
(6) at 500 DEG C and 0 mPa(normal pressure) nitrogen environment under react 5 minutes；
(7) question response is complete, and temperature is reduced to room temperature, takes out Copper Foil, with chemical dispersion solvent (DMF) point
From with transfer crystal film；Adding chemical dispersion solvent in U-shaped quartz ampoule, the crystal film on tube wall separates with tube wall, outstanding
Float in chemical dispersion solvent；The crystal film of both the above mode isolated is all New Type of Carbon two dimensional surface crystal film,
The number of plies of thin film is 1 to 2 layers, and every layer thickness is 0.34 nanometer.
Embodiment 4
The present embodiment uses the miniature Catalyst Characterization System of PX200 (manufacture of Tianjin Peng Xiang Science and Technology Ltd.), and experimental provision is such as
Shown in Fig. 3, use high-purity argon gas is carrier gas, high pure benzene (> 99.5%) it is raw material, 20 microns of thick high-purity Copper Foils are substrate, chemistry
Dispersant is N,N-dimethylformamide.Concrete preparation process is as follows:
The preparation method of New Type of Carbon two dimensional surface crystal, comprises the following steps:
(1) Copper Foil after polishing and cleaning process is put into the U-shaped quartz ampoule of microreactor, as preparing crystal film
Substrate；
(2) opening vacuum pump, evacuation 5 minutes, is-0.1 mPa to negative pressure, then leads to nitrogen to normal pressure；
(3) open temperature control power supply, program of heating is set, open heating power supply, be warming up to 800 DEG C；
(4) with argon as carrier gas, benzene vapour is brought in the U-shaped quartz ampoule of microreactor, controlled the steaming of benzene by bath temperature
Vapour pressure, controls to bring into the amount of the benzene vapour of microreactor by load volume；
(5) in the U-shaped quartz ampoule of microreactor, benzene vapour resolves into naked carbon phenyl ring free radical and hydrogen, naked carbon phenyl ring free radical with
Conjugatedπbond combines, and is deposited into crystal film on Copper Foil, also has crystal film to generate at quartz glass inside pipe wall simultaneously；
(6) at 800 DEG C and 0 mPa(normal pressure) ar gas environment under react 1.5 hours；
(7) question response is complete, and temperature is down to room temperature, takes out Copper Foil, separates with chemical dispersion solvent (DMF)
With transfer crystal film；Adding chemical dispersion solvent in U-shaped quartz ampoule, the crystal film on tube wall separates with tube wall, suspends
In chemical dispersion solvent；The crystal film of both the above mode isolated is all New Type of Carbon two dimensional surface crystal film.Thin
Film is the transparent crystal structure of multilamellar, and thickness is about 100 nanometers.
Embodiment 5
The present embodiment uses the miniature Catalyst Characterization System of PX200 (manufacture of Tianjin Peng Xiang Science and Technology Ltd.), and experimental provision is such as
Shown in Fig. 3, use high pure nitrogen is carrier gas, high pure benzene (> 99.5%) it is raw material, 20 microns of thick high-purity Copper Foils are substrate, chemistry
Dispersant is N,N-dimethylformamide.Concrete preparation process is as follows:
The preparation method of New Type of Carbon two dimensional surface crystal, comprises the following steps:
(1) Copper Foil after polishing and cleaning is put into the U-shaped quartz ampoule of microreactor, prepare the substrate of crystal film；
(2) open vacuum pump, evacuation 5 minutes, to negative pressure-0.1 mPa, then lead to nitrogen to normal pressure；
(3) open temperature control power supply, program of heating is set, open heating power supply, be warming up to 300 DEG C；
(4) nitrogen buffer gas, brings the U-shaped quartz ampoule of microreactor into by benzene vapour, is controlled the steam of benzene by bath temperature
Pressure, controls to bring into the amount of the benzene vapour of microreactor by load volume；
(5) in the U-shaped quartz ampoule of microreactor, benzene vapour resolves into naked carbon phenyl ring free radical and hydrogen, naked carbon phenyl ring free radical with
Conjugatedπbond combines, and is deposited into crystal film on Copper Foil, also has crystal film to generate at quartz glass inside pipe wall simultaneously；
(6) at 300 DEG C and 0 mPa(normal pressure) nitrogen environment under react 3 minutes；
(7) question response is complete, and temperature is reduced to room temperature, takes out Copper Foil, with chemical dispersion solvent (DMF) point
From with transfer crystal film；Adding chemical dispersion solvent in U-shaped quartz ampoule, the crystal film on tube wall separates with tube wall, outstanding
Float in chemical dispersion solvent；The crystal film of both the above mode isolated is all New Type of Carbon two dimensional surface crystal film,
The number of plies of thin film is 1 to 2 layers, and every layer thickness is 0.34 nanometer.
Claims (4)
1. a New Type of Carbon two dimensional surface crystal, it is characterised in that:
Its basic structural unit is by sp2The planar four-element ring of state carbon atom and plane hexatomic ring composition, planar four-element ring and plane six
The length of side of ring is close, and the length of side is 0.148 ~ 0.152 nanometer；
In its planar structure, non-conterminous three limits of plane hexatomic ring are shared with a planar four-element ring respectively, its excess-three bar limit
For occupying alone；One group of opposite side in planar four-element ring is shared with a plane hexatomic ring respectively, and one group of opposite side additionally is only
From occupying；
In the flat crystal of described carbon, the four edges of rectangle plane has two kinds of different structures, and the groove on a kind of limit is by projection
The isolation of hexatomic ring-four-membered ring-hexatomic ring, the groove on another kind of limit is isolated by the hexatomic ring of projection；
In its planar structure, the inside of this crystal includes the cavity of the dodecagon distributed alternately, a diameter of the 0.536 of cavity
Nanometer；
In its planar structure, the bonding atomic orbital of the carbon forming this crystal is the sp slightly deformed2Hybrid orbital, forms conjugation
Big π bond structure；Each carbon atom passes through sp23 σ-keys and 3 carbon atoms of hybrid orbital connect, and the carbon on flat edge edge is former
2 σ-keys and 2 carbon atoms of son are connected, and point to an out-of-plane σ-key and hydrogen atom or the atom of other singly-bound or atom
Group connects.
New Type of Carbon two dimensional surface crystal the most according to claim 1, it is characterised in that: this crystal is in addition to plane configuration, also
Form curved, wavy, cylinder and spherical.
New Type of Carbon two dimensional surface crystal the most according to claim 1, it is characterised in that: the preparation method of this crystal, including
Following steps:
(1) Copper Foil after polishing and cleaning process is put into the quartz ampoule of reactor, as the base preparing crystal film
Sheet；
(2) opening vacuum pump, evacuation 5 minutes, is-0.1 mPa to negative pressure, then leads to nitrogen to normal pressure；
(3) open temperature control power supply, program of heating is set, open heating power supply, be warming up to 300 DEG C ~ 800 DEG C；
(4) with noble gas as carrier gas, the benzene vapour in container is brought in the quartz ampoule of reactor, by bath temperature control
The vapour pressure of benzene, controls to bring into the amount of the benzene vapour of reactor by load volume；
(5) in the quartz ampoule of reactor, benzene vapour resolves into naked carbon phenyl ring free radical and hydrogen, and naked carbon phenyl ring free radical is with conjugated pi
Key combines, and is deposited into the crystal film of carbon on Copper Foil, also has crystal film to generate at quartz glass inside pipe wall simultaneously；
(6) depending on the area of response time visual response temperature and U-shaped quartz ampoule and Copper Foil, the time is the longest, the crystal film of generation
The number of plies the most；
(7) question response is complete, and temperature is down to room temperature, takes out Copper Foil, separates with chemical dispersion solvent and transfer crystal film；At U
Adding chemical dispersion solvent in type quartz ampoule, the crystal film on tube wall separates with tube wall, is suspended in chemical dispersion solvent；With
The crystal film of upper two ways isolated is all New Type of Carbon two dimensional surface crystal film.
The preparation method of New Type of Carbon two dimensional surface crystal the most according to claim 3, it is characterised in that: step (7) is described
Chemical dispersion solvent be N,N-dimethylformamide.
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