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Definitions

• the present invention describes mixtures comprising at least two organically functional compounds, in particular for use in electronic devices.
• the invention further relates to a process for the preparation of the mixtures according to the invention, comprising at least two organically functional compounds, as well as electronic devices containing these compounds.
• OLEDs organic or polymeric light-emitting diodes
• O-SC organic solar cells
• O-FET organic field effect transistors
• O-TFT organic thin-film transistors
• O-IC organic switching elements
• O-lasers organic laser diodes
• Solubility-improving groups have hitherto been used to solve this problem, as described, for example, in WO 201 1/137922 A1. Furthermore, from the documents US 2003/031893 A1 and US 2007/020485 A1 stereo isomers known, but do not lead to a satisfactory solution to the problem set out above.
• These properties include, in particular, the processability, transportability and storability of materials for the manufacture of electronic devices.
• Compounds can be based on polymeric materials, in particular, the light output should be high, so that to achieve a certain light flux as little electrical power must be applied. Furthermore, the lowest possible voltage should be necessary to achieve a given luminance.
• the electronic devices should be used or adapted for many purposes.
• the performance of the electronic devices should be maintained over a wide temperature range.
• Object of the present invention is further the provision of materials which are suitable for use in an organic compound
• the object of the present invention to provide compounds which lead to a long service life, good efficiency and low operating voltage. Especially the properties of the matrix materials have a significant influence on the life and the efficiency of the organic electroluminescent device.
• Another object of the present invention can be seen to provide compounds which are suitable for use in a phosphorescent or fluorescent OLED, in particular as a matrix material.
• fluorescent emitters should be provided which have excellent properties.
• the compounds should be as easy as possible to process, in particular show a good solubility and film formation.
• the compounds should exhibit increased oxidation stability and glass transition temperature.
• Organic electronic devices in particular of organic electroluminescent devices, in particular with regard to the service life, the efficiency and the operating voltage.
• Electronic devices, in particular organic electroluminescent devices containing such mixtures, and the corresponding ones preferred embodiments are therefore the subject of the present invention.
• the present invention therefore relates to a mixture comprising at least two organically functional compounds OSM1 and OSM2, which can be used for producing functional layers of electronic devices, which is characterized in that the compounds OSM1 and OSM2 are constitutional isomers to one another.
• Constitutional isomers are compounds which have the same general empirical formula but are in their constitution, i. H. in their structural structure differ so that they have a different
• Constitutional isomers thus differ fundamentally from stereoisomers comprising both enantiomers and diastereomers.
• Constitutional isomers are often grouped into functional isomers, skeletal isomers, positional isomers and binding isomers.
• the compounds may have a different reactivity, for example, ethanol comprises a hydroxyl group, while the dimethyl ether which is constitutive isomer has an ether group.
• Skeletal isomers and positional isomers differ in the branching and / or the position of functional groups, so that these constitutional isomers in the
• a substantially same functionality means that the basic functional group, ie, for example, a hydroxy group, a phenyl ring or an ester group, in all
• preferred mixtures comprise at least two organically functional compounds OSM1 and OSM2 having essentially the same functionality Accordingly, preferred organic functional compounds OSM1 and OSM2 are constitutional isomers but not functional isomers but skeletal isomers and / or
• the mixture may preferably contain at least three, particularly preferably at least four functional compounds OSM1, OSM2, OSM3 and / or OSM4, the preferred embodiments set out above and below which are suitable for mixtures with at least two organically functional compounds OSM1 and OSM2 are also applicable to mixtures containing more than two organically functional compounds.
• the two organically functional compounds OSM1 and OSM2 contained in the present mixtures which can be used to produce functional layers of electronic devices, can preferably be selected from the group consisting of fluorescent emitters, phosphorescent emitters, emitters which display TADF (thermally activated delayed fluorescence) , Host materials, electron transport materials, exciton blocking materials, electron injection materials, hole conductor materials, hole injection materials, n-dopants, p-dopants, wide band gap materials, electron blocking materials, and / or hole blocking materials.
• fluorescent emitters phosphorescent emitters
• emitters which display TADF (thermally activated delayed fluorescence) TADF (thermally activated delayed fluorescence)
• Host materials electron transport materials, exciton blocking materials, electron injection materials, hole conductor materials, hole injection materials, n-dopants, p-dopants, wide band gap materials, electron blocking materials, and / or hole blocking materials.
• the at least two organically functional compounds OSM1 and OSM2 of the mixtures according to the invention may preferably have the same number of aromatic or heteroaromatic ring systems having in each case 5 to 40 ring atoms, the degree of condensation of the ring systems being equal and the ring systems having substantially equal substituents.
• the at least two organically functional compounds OSM1 and OSM2 each have at least two aromatic or heteroaromatic ring systems each having 5 to 40 ring atoms, wherein the at least two organically functional compounds OSM1 and OSM2 differ in that the at least two aromatic or heteroaromatic
• Ring systems are linked together at different locations.
• a mixture according to the invention may contain at least two organically functional compounds OSM1 and OSM2, each of which is selected from the group of phenyls, fluorenes, indenofluorenes, spirobifluorenes, carbazoles, indenocarbazoles, indolocarbazoles, spirocarbazoles, pyrimidines, triazines, lactams,
• Triarylamines dibenzofurans, dibenzothienes, imidazoles, benzimidazoles, benzoxazoles, benzothiazoles, 5-arylphenanthridin-6-ones, 9,10-
• Dehydrophenanthrenes Fluoranthenes, anthracenes, benzanthracenes, fluoradenes.
• the organically functional compound OSM1 may preferably comprise at least one functional structural element and at least one substituent S1 and the organically functional compound OSM2 at least one functional structural element and at least one substituent S2, wherein the functional structural element of the organically functional compound OSM1 and the organically functional
• Connection OSM2 is the same.
• Compound OSM1 of substituent S1 binds to the functional structural element at a different position than the substituent S2 in the organically functional compound OSM2.
• the substituents S1 and S2 can be chosen arbitrarily, but are preferably selected from solubilizing groups, crosslinkable groups and / or functional groups, for example hole transport groups, electron transport groups, Hostmatehal groups or Wide Band Gap groups. These groups will be discussed in more detail later, so reference is hereby made.
• the mixtures according to the invention may comprise at least one organically functional compound OSM1 and at least one organically functional compound OSM2, each of which corresponds to the general formula (I):
• A is a first functional structural element
• q is an integer in the range of 1 to 20, preferably 1 to 10, particularly preferably 1 to 5 and especially preferably 1, 2 or 3, and
• r is an integer in the range of 0 to 20, preferably 1 to 10, particularly preferably 1 to 5 and especially preferably 1, 2 or 3, wherein the sum of q and r is at least 2 and A or B in the case that q or r 2 or greater, these groups are each the same or different, with the two constitutional isomers OSM1 and OSM2 differing in that at least one structural element binds to another structural element at another site.
• the sunnnne of q and r is at least 2 and is preferably in the range of 2 to 20, preferably 2 to 10, particularly preferably 2 to 5 and is especially preferably 2, 3 or 4.
• the mixtures according to the invention may contain at least one organically functional compound OSM1 and at least one organically functional compound OSM2, each containing at least one structure of the formula (II),
• X is the same or different N or CR 1 at each occurrence
• CR 1 , or C when attached to this atom is a group A or B, with the proviso that not more than two of the groups X are in one cycle for N;
• W is O, S, NR 1 , NA, NB, C (R 1 ) 2 , CR 1 A, C (A) 2 , CR 1 B, C (B) 2 ,
• m is independently at each occurrence 0, 1, 2, 3 or 4, preferably 0, 1 or 2, with the proviso that the sum of the indices m per ring is at most 4, preferably at most 2;
• A is a first functional structural element, preferably a
• aromatic or heteroaromatic ring system with 5 to
• Heteroaryloxy devis having 5 to 40 aromatic ring atoms, which may be substituted by one or more radicals R 2 , or an aralkyl or heteroaralkyl group having 5 to 40 aromatic
• Ring atoms which may be substituted with one or more R 2 radicals or a combination of these systems; in this case, two or more, preferably adjacent radicals R 1
• each other is a mono- or polycyclic, aliphatic, heteroaliphatic, aromatic or heteroaromatic
• Substituents R 3 also together with one another mono- or polycyclic, aliphatic, heteroaliphatic, aromatic or
• the structure of formula (II) comprises at least one group A and / or B.
• the structure of formula (II) comprises at least one group A.
• the sum of the groups A and / or B is preferably 2 to 10, particularly preferably 2 to 5 and is especially preferably 2, 3 or 4.
• Adjacent carbon atoms in the context of the present invention are carbon atoms which are directly linked to one another. Furthermore, “adjacent radicals" in the definition of radicals means that these radicals are attached to the same carbon atom or to adjacent ones
• the two radicals are linked to one another by a chemical bond with the formal cleavage of two hydrogen atoms, with the formulation that two or more radicals can form a ring with one another. This is illustrated by the following scheme.
• a condensed aryl group, a fused aromatic ring system or a fused heteroaromatic ring system in the context of the present invention is a group in which two or more
• condensed, d. H. fused are such that, for example, two carbon atoms belong to the at least two aromatic or heteroaromatic rings, such as in naphthalene.
• fluorene for example, is not a condensed aryl group in the sense of the present invention
• Heteroatoms may contain, but need not.
• An aryl group in the sense of this invention contains 6 to 60 C atoms, preferably 6 to 40 C atoms;
• a heteroaryl group contains 2 to 60 C atoms, preferably 2 to 40 C atoms and at least one heteroatom, with the proviso that the sum of C atoms and heteroatoms gives at least 5.
• the heteroatoms are preferably selected from N, O and / or S.
• aryl group or heteroaryl either a simple aromatic cycle, ie benzene, or a simple heteroaromatic cycle, for example pyridine, pyrimidine, thiophene, etc., or a fused aryl or heteroaryl group, for example naphthalene, anthracene,
• Phenanthrene, quinoline, isoquinoline, etc. understood.
• An aromatic ring system in the sense of this invention contains 6 to 60 C atoms, preferably 6 to 40 C atoms in the ring system.
• Heteroaromatic ring system for the purposes of this invention contains 1 to 60 carbon atoms, preferably 1 to 40 carbon atoms and at least one heteroatom in the ring system, with the proviso that the sum of C atoms and heteroatoms at least 5 results.
• the heteroatoms are preferably selected from N, O and / or S.
• An aromatic or heteroaromatic ring system in the sense of this invention is to be understood as meaning a system which does not necessarily contain only aryl or heteroaryl groups but in which also more aryl or heteroaryl groups are present. groups through a non-aromatic unit (preferably less than 10% the non-H atoms), such.
• a C, N or O atom or a carbonyl group may be interrupted.
• systems such as 9,9'-spirobifluorene, 9,9-diarylfluorene, triarylamine, diaryl ethers, stilbene, etc. are to be understood as aromatic ring systems in the context of this invention, and also systems in which two or more aryl groups, for example by a linear or cyclic alkyl group or interrupted by a silyl group.
• systems in which two or more aryl or heteroaryl groups are bonded directly to each other such as.
• biphenyl, terphenyl, Quaterphenyl or bipyridine also be understood as an aromatic or heteroaromatic ring system.
• a cyclic alkyl, alkoxy or thioalkoxy group is understood as meaning a monocyclic, a bicyclic or a polycyclic group.
• a C 1 - to C 20 -alkyl group in which individual H atoms or CH groups can also be substituted by the abovementioned groups, for example the radicals methyl, ethyl, n-propyl, i-propyl, Cyclopropyl, n-butyl, i-butyl, s-butyl, t-butyl, cyclobutyl, 2-methylbutyl, n-pentyl, s-pentyl, t-pentyl, 2-pentyl, neo-pentyl, cyclopentyl, n-hexyl, s-hexyl, t -hexyl, 2-hexyl, 3-hexyl, neo-hexyl, cyclohexyl, 1-methylcyclopentyl, 2-methylpentyl, n-heptyl, 2-heptyl, 3-h
• alkenyl group are, for example, ethenyl, propenyl, butenyl, pentenyl, cyclopentenyl, Hexenyl, cyclohexenyl, heptenyl, cycloheptenyl, octenyl, cyclooctenyl or cyclooctadienyl understood.
• alkynyl group is meant, for example, ethynyl, propynyl, butynyl, pentynyl, hexynyl, heptynyl or octynyl.
• a C 1 to C 4 o-alkoxy group is understood as meaning, for example, methoxy, trifluoromethoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, s-butoxy, t-butoxy or 2-methylbutoxy.
• aromatic or heteroaromatic ring system with 5-60 aromatic ring atoms, preferably 5-40 aromatic
• Ring atoms which may be substituted in each case with the abovementioned radicals and which may be linked via any position on the aromatic or heteroaromatic, are understood as meaning, for example, groups which are derived from benzene, naphthalene, anthracene,
• compounds OSM1 and OSM2 represented by structures of the formula (I) and / or (II).
• compounds OSM1 and OSM2 which can be used according to the invention, comprising structures of the formula (I) and / or (II), have a molecular weight of less than or equal to 5000 g / mol, preferably less than or equal to 4000 g / mol, particularly preferably less than or equal to 3000 g / mol, especially preferably less than or equal to 2000 g / mol and very particularly preferably less than or equal to 1200 g / mol.
• substituent S1 and the substituent S2 or at least one of the structural elements A and / or B in the compounds OSM1 and OSM2 according to the invention are each selected from the group consisting of phenyl, ortho, meta or para biphenyl, Terphenyl, in particular branched terphenyl, quaterphenyl, in particular branched quaterphenyl, 1-, 2-, 3- or 4-fluorenyl, 9,9'-diaryl fluorenyl 1-, 2-, 3- or 4-spirobifluorenyl, pyridyl, Pyrimidinyl, 1-, 2-, 3- or 4-dibenzofuranyl, 1-, 2-, 3- or 4-dibenzothienyl, pyrenyl, triazinyl, imidazolyl, benzimidazolyl,
• Tolyl mesityl, phenoxytolulyl, anisoleyl, triarylamino, bis-triarylamino, tris-triarylamino, hexamethylindanyl, tetralinyl, monocycloalkyl, biscycloalkyl, tricycloalkyl, alkyl, e.g. tert-butyl, methyl, propyl, alkoxyl,
• the groups described above may be substituted by groups R 1 , as described above.
• the compounds OSM1 and OSM2 which can be used according to the invention each contain a functional structural element, preferably a first functional structural element A, which has at least one aromatic or heteroaromatic ring system with in each case 5 to 40 ring atoms, which contains one or more substituents, preferably one or one or more substituents S1, S2 or R 1 may be substituted.
• a functional structural element preferably a first functional structural element A, which has at least one aromatic or heteroaromatic ring system with in each case 5 to 40 ring atoms, which contains one or more substituents, preferably one or one or more substituents S1, S2 or R 1 may be substituted.
• the compounds OSM1 and OSM2 which can be used according to the invention may each contain a functional structural element, preferably a first functional structural element A, which is selected from the group of the fluorenes, indenofluorenes, spirobifluorenes,
• the organically functional compounds OSM1 and OSM2 may each comprise at least two functional groups, wherein the organically functional compounds OSM1 and OSM2 differ in that the respective two functional groups
• the second structural element may preferably have at least one aromatic or heteroaromatic ring system having in each case 5 to 40 ring atoms, which may be substituted by one or more substituents, preferred substituents being selected from the groups R 1 described above and below.
• the substituents S1 and S2 can preferably be selected from the groups R 1 described above and later.
• the functional structural element of the compounds OSM1 and OSM2 which can be used according to the invention is selected from Hole transport groups, electron transport groups, hostmatehal groups or wide band gap groups.
• the compounds OSM1 and OSM2 which can be used according to the invention comprise at least one hole transport group, these groups being known in the art and being in many cases selected from arylamino groups, preferably di- or triarylamino groups, heteroarylamino groups, preferably di- or triheteroarylamino groups, carbazole groups, carbazole groups being preferred are.
• a hole transport group, a structural element A, a substituent S1 or S2, respectively comprises a group, preferably represents a group which is selected from the formulas (H-1) to (H-3),
• p is 0 or 1
• a hole transport group, a structural element A or a substituent S1, S2 comprises a group, preferably represents a group which is selected from the formulas (H-4) to (H-26),
• Ar 2 is an aromatic or heteroaromatic ring system having 5 to 14 aromatic or heteroaromatic ring atoms, preferably an aromatic ring system having 6 to 12 carbon atoms, which may be substituted by one or more radicals R 1 , but preferably unsubstituted where R 1 may have the meaning given above, in particular for formula (II).
• Ar 2 particularly preferably represents an aromatic ring system having 6 to 10 aromatic ring atoms or a heteroaromatic ring system having 6 to 13 heteroaromatic ring atoms, which may each be substituted by one or more radicals R 1 , but is preferably unsubstituted, where R 1 is the previously in particular may have the meaning given in formula (II).
• Ar 2 represents an aryl or heteroaryl having 5 to 24
• Ring atoms preferably 6 to 13 ring atoms, more preferably 6 to 10 ring atoms, so that an aromatic or heteroaromatic group of an aromatic or heteroaromatic ring system directly, i. via one atom of the aromatic or heteroaromatic group to which the respective atom of the further group is bonded.
• the group Ar 2 set forth in formulas (H-1) to (H-26) is an aromatic ring system having at most two condensed aromatic and / or heteroaromatic Rings, preferably does not comprise a fused aromatic or heteroaromatic ring system. Accordingly, naphthyl structures are preferred over anthracene structures. Furthermore, there are fluorenyl, spirobifluorenyl, dibenzofuranyl and / or dibenzothienyl structures
• Naphthyl structures are preferred. Particular preference is given to structures which have no condensation, such as, for example, phenyl, biphenyl, terphenyl and / or quaterphenyl structures.
• structures which have no condensation such as, for example, phenyl, biphenyl, terphenyl and / or quaterphenyl structures.
• OSM1 or OSM2 which are used as fluorescent emitters
• Suitable aromatic or heteroaromatic ring systems Ar 2 are selected from the group consisting of ortho-, meta- or para-phenylene, ortho-, meta- or para-biphenylene, terphenylene, in particular branched terphenylene, quaterphenylene, in particular branched quaterphenylene, fluorenylene, Spirobifluorenylen, Dibenzo- furanylene, dibenzothienylene and carbazolylene, which may be substituted by one or more radicals R 1 , but are preferably unsubstituted.
• the group Ar 2 set forth, inter alia, in formulas (H-1) to (H-26) contains at most 1 nitrogen atom, preferably at most 2 heteroatoms, in particular preferably at most one
• Ar 3 and / or Ar 4 is the same or different at each occurrence as an aromatic or heteroaromatic ring system having 6 to 24
• aromatic ring atoms preferably with 6 to 18 aromatic
• Ring atoms particularly preferably for an aromatic ring system having 6 to 12 aromatic ring atoms or a heteroaromatic ring system having 6 to 13 aromatic ring atoms, which may each be substituted by one or more radicals R 1 , but is preferably unsubstituted, where R 1 is the previously especially in formula (II) may have shown meaning.
• suitable groups Ar 3 and / or Ar 4 are selected from the group consisting of phenyl, ortho, meta or para biphenyl, terphenyl, in particular branched terphenyl, quaternaryphenyl, in particular branched quaterphenyl, 1, 2, 3- or 4-
• the radicals R 1 preferably form the ring atoms of the aryl group or heteroaryl group Ar 1 , Ar 2 , Ar 3 and / or Ar 4 to which the radicals R 1 in the formulas (H-1) to (H-26) can be bonded , no condensed ring system. This includes the formation of a fused ring system with possible substituents R 2 , R 3 which may be bonded to the R 1 groups .
• the compounds OSM1 and OSM2 which can be used according to the invention can each comprise an electron transport group, wherein the functional structural element or the substituents S1 and S2 can preferably represent an electron transport group.
• Electron transport groups are well known in the art and promote the ability of compounds to transport and / or conduct electrons.
• compounds OSM1 and OSM2 which can be used according to the invention, preferably comprising at least one structure according to formula (I) and / or (II) or their preferred embodiments, show surprising advantages in which the group A and / or B in formulas (I) and / or ( II) or their preferred embodiments or the
• Substituents S1 and S2 comprises at least one structure selected from the group consisting of pyridines, pyrimidines, pyrazines, pyridazines, triazines, quinazolines, quinoxalines, quinolines, isoquinolines, imidazoles and / or benzimidazoles, pyrimidines, triazines and quinazolines being particularly preferred.
• an electron-transporting group, a structural element A and / or B, a substituent S1, S2 or one of the radicals R comprises a group, preferably represents a group represented by the formula (QL ) is representable
• L 1 is a bond or an aromatic or heteroaromatic ring system having 5 to 60 aromatic, preferably 5 to 40
• R 1 represents aromatic ring atoms which may be substituted by one or more radicals R 1 , and Q is an electron transport group, wherein R 1 has the meaning mentioned above, in particular for formula (II).
• an electron transport group which is, inter alia, in the formula (QL) set forth group Q and / or the substituent S1 or S2 selected from structures of the formulas (Q-1), (Q-2), (Q-) 4), (Q-4), (Q-5), (Q-6), (Q-7), (Q-8), (Q-9) and / or (Q-10)
• Q represents NR 1 , O or S
• R 1 is as previously defined for formula (II).
• an electron transporting group which is, inter alia, represented in the formula (QL) group Q and / or the substituents S1 and S2, respectively, may be selected from structures of the formulas (Q-1 1), (Q-12), (Q-13), (Q-14) and / or (Q 15)
• an electron transport group the group Q set forth, inter alia, in the formula (QL) and / or the Substituent S1 or S2 be selected from structures of the formulas (Q-16), (Q-17), (Q-18), (Q-19), (Q-20), (Q-21) and / or (Q -22)
• the structures of the formulas (Q-16), (Q-17), (Q-) 18) and (Q-19) are preferred.
• an electron transport group which may be selected, inter alia, in the formula (QL) group Q and / or the substituents S1 and S2 respectively, may be selected from structures of the formulas (Q-23), (Q-24) and / or (Q -25)
• an electron transport group which is represented inter alia in the formula (QL) group Q and / or the substituent S1 or S2 can be selected from structures of the formulas (Q-26), (Q-27), (Q-28 ), (Q-29) and / or (Q-30),
• an electron transport group the group Q set forth, inter alia, in the formula (QL) and / or the substituent S1 or S2 can be selected from structures of the formulas (Q-31), (Q-32), (Q-33), (Q-34), (Q-35), (Q-36), (Q-37), (Q-38), (Q-39), (Q-40), (Q-41), (Q-42), (Q-43) and / or (Q-44),
• Ar 1 represents an aryl or heteroaryl radical, such that an aromatic or heteroaromatic group of a
• aromatic or heteroaromatic ring system directly ie via one atom of the aromatic or heteroaromatic group, is bonded to the respective atom of the further group, for example a C or N atom of the previously described groups (H-1) to (H-26) or (Q-26) to (Q-44).
• Ar 1 is identical or different at each occurrence for an aromatic or heteroaromatic ring system having 6 to 24 aromatic ring atoms, preferably having 6 to 18 aromatic ring atoms, particularly preferably for an aromatic ring system having 6 to 12 aromatic ring atoms or a heteroaromatic ring system having 6 to 13 aromatic ring atoms, which may each be substituted by one or more radicals R 1 , but is preferably unsubstituted, where R 1 may have the meaning previously shown in particular in formula (II).
• suitable groups Ar 1 are selected from the group consisting of phenyl, ortho-, meta- or para-biphenyl, terphenyl, in particular branched terphenyl, quaterphenyl, in particular branched
• Ar 1 in the formulas (H-1) to (H-26) or (Q-16) to (Q-34) represents an aromatic ring system having 6 to 12 aromatic ring atoms which is substituted by one or more R 1 may be substituted, but is preferably unsubstituted, where R 1 may have the meaning previously shown in particular for formula (I).
• the group Ar 1 , Ar 2 , Ar 3 and / or Ar 4 is selected from the group consisting of phenyl, ortho-, meta- or para-biphenyl, terphenyl, in particular branched terphenyl, quaterphenyl, in particular branched Quaterphenyl, 1-, 2-, 3- or 4-fluorenyl, 1-, 2-, 3- or 4-spirobifluorenyl, pyridyl, pyrimidinyl, 1-, 2-, 3- or 4-dibenzofuranyl, 1-, 2- , 3- or 4-dibenzothienyl, pyrenyl, triazinyl, imidazolyl, benzimidazolyl, benzoxazolyl, benzthiazolyl, 1-, 2-, 3- or 4-carbazolyl, 1- or 2-naphthyl, anthracenyl, preferably 9-anthracenyl, phenanthrenyl and / or trip
• Dibenzothiophene, anthracene, phenanthrene, triphenylene groups are particularly preferred, wherein the radical R 1 has the meaning previously mentioned, in particular for formula (II).
• radicals R 1 in the formulas (H-1) to (H-26) or (Q-1) to (Q-44) preferably form with the ring atoms of the heteroaryl group or the group Ar 1 and / or Ar 2 to which the radicals R 1 are bonded, no condensed
• Ring system This includes the formation of a fused ring system with possible substituents R 2 , R 3 which may be bonded to the R 1 groups . Furthermore, it can be provided that the substituents R 1 with
• Ringystems with possible substituents R 2 , R 3 which may be bonded to the radicals R 1 . It can preferably be provided that the
• heteroaromatic ring system do not form a ring system. This includes the formation of a ring system with possible substituents R 2 , R 3 , which may be bonded to the radicals R 1 .
• aromatic or heteroaromatic ring system may preferably form a mono- or polycyclic aliphatic ring system which may be substituted by one or more radicals R 3 , wherein the symbol R 2 may have the meaning previously mentioned, in particular for formula (II).
• R 3 may have the meaning previously mentioned, in particular for formula (II).
• Ar 1 the same or different each occurrence, represents an aryl or heteroaryl group having 5 to 24, preferably 5 to 12, aromatic ring atoms, each of which may be substituted with one or more R 2 , but is preferably unsubstituted.
• Suitable groups Ar 1 are selected from the group consisting of phenyl, ortho-, meta- or para-biphenyl, terphenyl, in particular branched terphenyl, quaterphenyl, in particular branched quaterphenyl, 1-, 2-, 3- or 4-fluorenyl, 1-, 2-, 3- or 4- spirobifluorenyl, pyridyl, pyrimidinyl, 1-, 2-, 3- or 4-dibenzofuranyl, 1-, 2-, 3- or 4-dibenzothienyl and 1-, 2-, 3 - or 4-carbazolyl, which may each be substituted by one or more radicals R 2 , but are preferably unsubstituted.
• R 1 are particularly preferably selected from the group consisting of H, D, F, CN, N (Ar 1 ) 2, a straight-chain alkyl group having 1 to 8 C atoms, preferably 1, 2, 3 or 4 C atoms, or a branched or cyclic alkyl group having 3 to 8 C atoms, preferably having 3 or 4 C atoms, or an alkenyl group having 2 to 8 C atoms, preferably having 2, 3 or 4 C atoms, each with one or more R 2 may be substituted, but is preferably unsubstituted, or an aromatic or heteroaromatic ring system having 6 to 24 aromatic ring atoms, preferably having 6 to 18 aromatic
• Ring atoms particularly preferably having 6 to 13 aromatic ring atoms, which may each be substituted by one or more non-aromatic radicals R 1 , but is preferably unsubstituted;
• two substituents R 1 attached to the same carbon atom or to adjacent carbon atoms may form a monocyclic or polycyclic aliphatic ring system which may be substituted with one or more R 2 , but is preferably unsubstituted, wherein Ar 1 is the above may have meaning.
• the substituents R 1 are selected from the group consisting of H or an aromatic or heteroaromatic ring system having 6 to 18 aromatic ring atoms, preferably having 6 to 13 aromatic ring atoms, each substituted with one or more non-aromatic radicals R 2 can, but is preferably unsubstituted.
• substituents R 1 are selected from the group consisting of phenyl, ortho-, meta- or para-biphenyl, terphenyl, in particular branched terphenyl, quaterphenyl, in particular branched quaterphenyl, 1-, 2-, 3- or 4-fluorenyl, 1-, 2-, 3- or 4-spirobifluorenyl, pyridyl, pyrimidinyl, 1-, 2-, 3- or 4-dibenzofuranyl, 1-, 2-, 3- or 4-dibenzothienyl and 1-, 2-, 3 - or 4-carbazolyl, which may each be substituted by one or more radicals R 2, but preferably are unsubstituted.
• Compounds OSM1 and OSM2 each comprise at least one group, preferably a substituent S1 and S2, preferably in the structure according to formula (I) and / or (II) at least one structural element A and / or B or at least one radical Ar 1 , Ar 2 , Ar 3 , Ar 4 and / or R 1 comprises a group, preferably represents a group which is selected from the formulas (R 1 -1) to bis (R 1 - 95)
• Y is O, S or NR 2 , preferably O or S;
• i is independently 0, 1 or 2 at each occurrence;
• J is independently 0, 1, 2 or 3 at each occurrence
• h is independently 0, 1, 2, 3 or 4 at each occurrence
• g is independently 0, 1, 2, 3, 4 or 5 at each occurrence
• R 2 may have the abovementioned meaning, in particular for formula (II), and the dashed binding marks the attachment position.
• the sum of the indices i, j, h and g in the structures of the formula (R 1 -1) to (R 1 -95) is at most 3, preferably at most 2 and particularly preferably at most 1.
• radicals R 2 in the formulas (R 1 -1) to (R 1 -95) with the ring atoms of the aryl group or heteroaryl group to which the radicals R 2 are bonded preferably form no fused aromatic or heteroaromatic ring system, preferably no fused ring system , This includes the formation of a fused ring system with possible substituents R 3 which may be bonded to the R 2 radicals.
• Connections OSM1 and OSM2 comprise at least one connecting group, so that at least one functional structural element is connected to another structural element; preferably represents the
• Ring system having in each case 5 to 40 ring atoms, which may be substituted, for example, with groups R 1 , which have been previously described.
• the further structural element can be a hole transport group, an electron transport group, a solubilizer
• constitutional isomers OSM1 and OSM2 may comprise at least one linking group such that at least one
• the linking group is an aromatic or heteroaromatic ring system having in each case 5 to 40 ring atoms, which may be substituted, for example, with groups R 1 , which have been previously described.
• Preferred linking groups which may be included among the constitutional isomers OSM1 and OSM2, are described below in As exemplified by the group L 1 included in the formula (QL) set forth above.
• the group L 1 with the group Q and the aromatic or heteroaromatic radical or the nitrogen atom to which the group L 1 according to formula (QL) is bonded can form a continuous conjugation. Consistent conjugation of the aromatic or heteroaromatic systems is formed as soon as direct bonds are formed between adjacent ones
• Carbonyl group does not harm a conjugation.
• Spirobifluorene structure be formed a continuous conjugation, if the connection between the group Q and the aromatic or heteroaromatic radical to which the group L 1 is bound according to formula (QL), via the same phenyl group of the spirobifluorene structure or phenyl groups of spirobifluorene structure, which directly adjacent to each other are bound and lie in one plane takes place. If the connection between the group Q and the aromatic or heteroaromatic radical to which the group L 1 according to formula (QL) is bonded via different phenyl groups of the second
• L 1 is a bond or an aromatic or heteroaromatic
• Ring atoms preferably an aromatic ring system having 6 to 12 carbon atoms, which by one or more radicals R 1
• R 1 is the previously in particular may have the meaning given in formula (II).
• L 1 particularly preferably represents an aromatic ring system having 6 to 10 aromatic ring atoms or a heteroaromatic ring system having 6 to 13 heteroaromatic ring atoms, which may each be substituted by one or more radicals R 2 , but is preferably unsubstituted, where R 2 is the previously in particular may have the meaning given in formula (II).
• the symbol L 1 set forth, inter alia, in formula (QL) is the same or different at each occurrence as a bond or an aryl or heteroaryl radical having 5 to 24 ring atoms,
• Ring atoms so that an aromatic or heteroaromatic group of an aromatic or heteroaromatic ring system directly, i. via one atom of the aromatic or heteroaromatic group to which the respective atom of the further group is bonded.
• group L 1 set forth in formula (QL) comprises an aromatic ring system having at most two fused aromatic and / or heteroaromatic rings, preferably no fused aromatic or heteroaromatic ring system. Accordingly, naphthyl structures are opposed
• Anthracene structures preferred. Furthermore, there are fluorenyl, spirobifluorenyl, dibenzofuranyl and / or dibenzothienyl structures
• Naphthyl structures are preferred.
• Suitable aromatic or heteroaromatic ring systems L 1 are selected from the group consisting of ortho-, meta- or para-phenylene, ortho-, meta- or para-biphenylene, terphenylene, in particular branched terphenylene, quaterphenylene, in particular branched quaterphenylene, fluorenylene, Spirobifluorenylen, Dibenzofuranylen, Dibenzothienylen and Carbazolylen, each by a or a plurality of radicals R 2 may be substituted, but are preferably unsubstituted.
• group L 1 set forth, inter alia, in formula (QL) has at most 1 nitrogen atom, preferably at most 2 heteroatoms, more preferably at most one heteroatom and more preferably no heteroatom.
• compounds OSM1 and OSM2 comprising at least one structure of the formulas (H-1) to (H-26) in which the group Ar 2 represents a group which is selected from the formulas (L 1 -1) to ( U-109) and / or compounds OSM1 and OSM2, comprising at least one connecting group, and / or compounds OSM1 and OSM2,
• the sum of the indices k, I, g, h and j in the structures of the formula (L 1 -1) to (L 1 -109) is at most 3, preferably at most 2 and particularly preferably at most 1
• Preferred compounds of the invention having a group of formula (QL) include a group L which is a bond or which
• Preferred compounds of the invention having a group of formulas (H-1) to (H-26) comprise a group Ar 2 selected from one of the formulas (L 1 -1) to (L 1 -78) and / or (L 1 -92) to (L 1 -109), preferably of the formula (L 1 -1) to (L 1 -54) and / or (L 1 -92) to (U-108), especially preferably of the formula (L 1 -1) to (L 1 -29) and / or (L 1 -92) to (L 1 - 103).
• radicals R 2 in the formulas (L 1 -1) to (L 1 -109) with the ring atoms of the aryl group or heteroaryl group to which the radicals R 2 are bonded preferably form no fused aromatic or heteroaromatic ring system, preferably no fused ring system , This includes the formation of a fused ring system with possible substituents R 3 which may be bonded to the R 2 radicals. If the inventively employable compounds OSM1 and OSM2 with aromatic or heteroaromatic groups R 1 or R 2
• Host material, electron transport material or hole transport material for green or red OLEDs preferably when they are not aryl or
• Heteroaryl groups having more than two directly condensed aromatic six-membered rings Particularly preferably, the substituents have no aryl or heteroaryl groups with directly condensed six-membered rings. This preference is due to the low triplet energy of such structures.
• Condensed aryl groups with more than two directly condensed aromatic six-membered rings which are nevertheless also suitable according to the invention, are phenanthrene and triphenylene, since these too have a high content
• preferred compounds may contain corresponding groups, for example fluorene, anthracene and / or pyrene groups, which may be substituted by groups R 2 or by appropriate substitution of the groups (R 1 -1) to (R 1 -95), preferably (R 1 -33) to (R 1 -57) and (R 1 -76) to (R 1 -86), or ( L 1 -1) to (U-109), preferably (U-30) to (R 1 -60) and (R 1 -71) to (R 1 -91), with the groups R 2 or by appropriate substitution of the groups (R 1 -1) to (R 1 -95), preferably (R 1 -33) to (R 1 -57) and (R 1 -76) to (R 1 -86), or ( L 1 -1) to (U-109), preferably (U-30) to (R 1 -60) and (R 1 -71) to (R 1 -91), with the groups R 2 or by appropriate substitution of the groups (R 1 -1) to (R 1
• R 2 is , for example, in a structure according to formula (II) and preferred
• Embodiments of this structure or the structures referencing these formulas each occurrence identically or differently selected from the group consisting of H, D, an aliphatic hydrocarbon radical having 1 to 10 C atoms, preferably 1, 2, 3 or 4 C atoms, or an aromatic or heteroaromatic ring system having 5 to 30 aromatic ring atoms, preferably having 5 to 24 aromatic ring atoms, more preferably having 5 to 13 aromatic ring atoms, which by one or more
• Alkyl groups each having 1 to 4 carbon atoms may be substituted, but is preferably unsubstituted.
• R 3 for example in the case of a structure according to formula (II) and preferred embodiments of this structure or the structures which refer to these formulas, is identically or differently selected from the group consisting of at each occurrence H, D, F, CN, an aliphatic hydrocarbon radical having 1 to 10 C atoms, preferably having 1, 2, 3 or 4 C atoms, or an aromatic or heteroaromatic ring system having 5 to 30 aromatic ring atoms, preferably 5 to 24 aromatic ring atoms, particularly preferably with 5 to 13 aromatic ring atoms, by one or more
• Alkyl groups each having 1 to 4 carbon atoms may be substituted, but is preferably unsubstituted.
• Comprise structural element preferably represent.
• organically functional compounds OSM1 and OSM2 each comprise at least one solubilizing group
• the organically functional compounds OSM1 and OSM2 differ in that the solubilizing groups of the organically functional compounds OSM1 and OSM2 are constitutional isomers to each other, preferably the same number contain aromatic or heteroaromatic ring systems and have substantially the same Subsitutenten,
• a solubilizing group or a solubility-imparting structural element may comprise a longer alkyl group (about 4 to 20 C atoms), in particular a branched alkyl group, or an optionally substituted aryl group.
• aryl groups include a xylyl, mesityl, terphenyl or quaterphenyl group, wherein branched
• Compounds OSM1 and OSM2 to be used according to the invention each have at least one crosslinkable group. Therefore, in the embodiments set out above, substituent S1, substituent S2 and / or group B may comprise a crosslinkable group, which may optionally be considered as a structural element.
• the compounds OSM1 and OSM2 which can be used according to the invention may, as stated above, contain one or more crosslinkable groups.
• Crosslinkable group means a functional group capable of irreversibly reacting, thereby forming a crosslinked material which is insoluble. The crosslinking can usually be assisted by heat or by UV, microwave, X-ray or electron beam radiation
• crosslinkable groups that may be included in the functional compounds crosslink very easily, so that lower amounts of energy are required for crosslinking (e.g., ⁇ 200 ° C for thermal crosslinking).
• crosslinkable groups are units containing a double bond, a triple bond, a precursor capable of in situ formation of a double or triple bond, or a heterocyclic addition polymerizable radical.
• Crosslinkable groups include, but are not limited to, vinyl, alkenyl, preferably ethenyl and
• the constitutionally isomeric, organically functional compounds OSM1 and OSM2 each at least one
• solubilizing group containing solubilizing group and containing at least one functional structural element or a functional group, wherein the functional structural element or the functional group is selected from hole transport groups, electron transport groups, structural elements or groups, which are host materials or
• the constitutionally isomeric, organically functional compounds OSM1 and OSM2 may each contain at least one crosslinkable structural element or a crosslinkable group and contain at least one functional structural element or one functional group, the functional structural element or the functional group being selected from hole-transporting groups,
• Electron transport groups, structural elements or groups that lead to host materials, or structural elements or groups with wide-band gap properties Electron transport groups, structural elements or groups that lead to host materials, or structural elements or groups with wide-band gap properties.
• structural elements or groups with wide-band gap are Electron transport groups, structural elements or groups that lead to host materials, or structural elements or groups with wide-band gap properties.
• structural elements or groups with wide-band gap are Electron transport groups, structural elements or groups that lead to host materials, or structural elements or groups with wide-band gap properties.
• Compounds OSM1 and OSM2 are constitutional isomers that differ in their structural composition. The following
• embodiments are to be understood as meaning that the explicitly mentioned compounds are used in combination with another, constitutionally isomeric compound. Furthermore, the explicitly mentioned compounds can easily be replaced by a corresponding one
• the substituents may be chosen as desired, but are preferably selected from the substituents S1, S2 and / or R 1 set out above, preference being given to the use of functional groups, solubilizing groups or crosslinkable groups as substituents, as described above.
• Organically functional materials are often described by the properties of the frontier orbitals, which are described in more detail below.
• Molecular orbitals in particular the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO), whose Energy levels as well as the energy of the lowest triplet state Ti or of the lowest excited singlet state Si of the materials are determined by quantum-chemical calculations.
• HOMO highest occupied molecular orbital
• LUMO lowest unoccupied molecular orbital
• HOMO (eV) ((HEh * 27.212) -0.9899) / 1 .1206
• the lowest triplet state Ti is defined as the energy of the triplet state with the lowest energy, which results from the described quantum chemical calculation.
• the lowest excited singlet state Si is defined as the energy of the excited singlet state with the lowest energy which results from the described quantum chemical calculation.
• hole injection materials facilitate or facilitate the transfer of holes, i. H. positive charges, from the anode into an organic layer.
• a hole injection material has a HOMO level that is in the range of or above the level of the anode, i. H. in the
• hole transport materials are capable of holes, i. H. positive charges, too
• a hole transport material generally has a high HOMO level of preferably at least -5.4 eV.
• a hole transport material can also be used as a hole injection material.
• the preferred compounds or groups or structural elements which have hole injection and / or hole transport properties include, for example, triarylamine, benzidine, tetraaryl-para-phenylenediamine, triarylphosphine, phenothiazine, phenoxazine,
• HOMO highest occupied molecular orbital
• Arylamine derivatives (US 3567450), amino-substituted chalcone derivatives (US 3526501), styrylanthracene derivatives (JP-A-56-46234), polycyclic aromatic compounds (EP 1009041), polyarylalkane derivatives (US 3615402), fluorenone derivatives (JP-A-54-1 10837), hydrazone derivatives (US 3717462), acylhydrazones, stilbene derivatives (JP-A-61-210363), silazane derivatives (US 4950950), polysilanes ( JP-A-2-204996), aniline copolymers (JP-A-2-282263), thiophene oligomers (JP Heisei 1 (1989) 21 1399), polythiophenes, poly (N-vinylcarbazole) (PVK), polypyrroles, Polyanilines and other electrically conductive macromolecules, porphyrin compounds (JP-A-63-29569
• Triphenylamines of the diamine type Triphenylamines of the diamine type.
• Arylamine dendrimers may also be used (JP Heisei 8 (1996) 193191), monomeric triarylamines (US 3180730), triarylamines having one or more vinyl radicals and / or at least one active hydrogen functional group (US Pat. Nos. 3,567,450 and 3,305,820) or tetraaryldiamines (US Pat. the two
• Tertiary amino units are linked via an aryl group). There may also be more triarylamino groups in the molecule. Also phthalocyanine derivatives, naphthalocyanine derivatives, butadiene derivatives and quinoline derivatives such as e.g. Dipyrazino [2,3-f: 2 ', 3'-h] quinoxaline-hexacarbonitrile are suitable.
• aromatic tertiary amines having at least two
• NPD NPD
• TPD 232 N, N'-bis
• JP-A-4-308688 TPD-A-4-308688
• TBDB N, N, N ', N'-tetra (4-biphenyl) diaminobiphenylene
• TAPC 1, 1 Bis (4-di-p-tolylaminophenyl) cyclohexane
• TAPPP 1,1-bis (4-di-p
• these arylamines and heterocycles which in the
• Vacuum level more preferably more than -5.5 eV.
• Particularly useful compounds or groups or structural elements for electron transporting and electron injecting layers are metal chelates of 8-hydroxyquinoline (for example LiQ, AlQ.sub.3, GaQ3, MgQ 2, ZnQ 2, LNQ 3, Zrq 4), BAlq, Ga-oxinoid complexes, 4-aza phenanthrene-5-ol-Be complexes (US 5529853 A, see formula ET-1),
• Triarylborane derivatives with Si (US 2007/0087219 A1, see formula ET-3), pyridine derivatives (JP 2004-200162), phenanthrolines, especially 1, 10 phenanthroline derivatives, such as BCP and Bphen, also several on biphenyl or others phenanthrolines linked to aromatic groups (US 2007-0252517 A1) or anthracene-linked phenanthrolines (US 2007-0122656 A1, see Formulas ET-4 and ET-5).
• heterocyclic organic compounds or groups or structural elements such as thiopyran dioxides, oxazoles, triazoles, imidazoles or oxadiazoles.
• heterocyclic organic compounds or groups or structural elements such as thiopyran dioxides, oxazoles, triazoles, imidazoles or oxadiazoles.
• oxazoles preferably 1, 3,4-oxadiazoles
• Thiazoles, oxadiazoles, thiadiazoles, triazoles inter alia see US 2008/010231 1 A1 and YA Levin, MS Skorobogatova, Khimiya Geterotsiklicheskikh Soedinenii 1967 (2), 339-341, preferably compounds according to formula ET-10, silacyclopentadiene derivatives.
• Preferred compounds are the following according to the formulas (ET-6) to (ET-10):
• Structural elements such as derivatives of fluorenone, fluorenylidene methane, perylenetetracarbon, anthraquinone, diphenoquinone, anthrone and Anthrachinondiethylendiamin can be used.
• the mixtures of the present invention may comprise emitters, it being possible for the compounds OSM1 and OSM2 which can be used according to the invention to be designed as emitters.
• emitter denotes a Material which, after excitation, which can be done by transmission of any kind of energy, allows a radiation-rich transition to emit light into a ground state.
• two classes of emitters are known, fluorescent and
• fluorescent emitter refers to materials or compounds in which a
• phosphorescent emitter preferably refers to luminescent materials or compounds comprising transition metals.
• Emitters are often referred to as dopants if the dopants produce the properties outlined above in a system.
• a dopant is understood to mean the component whose proportion in the mixture is the smaller.
• a matrix material in a system containing a matrix material and a dopant is understood to mean the component whose proportion in the mixture is the larger.
• the term phosphorescent emitter can accordingly be understood as meaning, for example, also phosphorescent dopants.
• Compounds or structural elements which can emit light include, among others, fluorescent emitters and phosphorescent emitters. These include, among others
• Perylene, phatolocyanine, porphyrin, ketone, quinoline, imine, anthracene and / or pyrene structures are particularly preferred.
• Particularly preferred are compounds which can emit light from the triplet state even at room temperature with high efficiency, ie electrophosphorescence instead
• Electrofluorescence shows what often causes an increase in energy efficiency.
• Compounds which contain heavy atoms with an atomic number of more than 36 are suitable for this purpose. Preferred are
• Preferred fluorescent emitters are selected from the class of monostyrylamines, the
• Distyrylamines tristyrylamines, tetrastyrylamines, styrylphosphines, styryl ethers and arylamines.
• a monostyrylamine is meant a compound containing a substituted or unsubstituted styryl group and at least one, preferably aromatic, amine.
• a distyrylamine is understood as meaning a compound which contains two substituted or unsubstituted styryl groups and at least one, preferably aromatic, amine.
• a tristyrylamine is understood as meaning a compound which contains three substituted or unsubstituted styryl groups and at least one, preferably aromatic, amine.
• Under a tetrastyrylamine is a
• Styryl tendency and at least one, preferably aromatic, amine are particularly preferably silibene, which may also be further substituted.
• Corresponding phosphines and ethers are defined in analogy to the amines. Under an aryl amine or an aromatic amine in the context of the present invention is a
• At least one of these aromatic or heteroaromatic ring systems is preferably a fused ring system, preferably having at least 14 aromatic ring atoms.
• Preferred examples of these are aromatic anthraceneamines, aromatic
• Anthracenediamines aromatic pyrenamines, aromatic pyrenediamines, aromatic chrysenamines or aromatic chrysendiamines.
• aromatic anthracene amine is meant a compound in which a diarylamino group is bonded directly to an anthracene group, preferably in the 9-position.
• aromatic anthracenediamine is meant a compound in which two diarylannino groups are bonded directly to an anthracene group, preferably in the 2,6 or 9,10 position.
• Aromatic pyrenamines, pyrenediamines, chrysenamines and chrysendiannins are defined analogously thereto, the diarylannino groups being preferably attached to the pyrene in the 1-position or in the 1,6-position.
• fluorescent emitters are selected from indeno-fluorenamines or -diamines, inter alia, in the document
• WO 06/122630 are set forth; Benzoindenofluorenaminen or diamines, which are set out inter alia in document WO 2008/006449; and dibenzoindenofluorenamines or diamines, inter alia, in the
• Structural elements that can be used as fluorescent emitters, from the class of styrylamines are substituted or
• Distyrylbiphenyl derivatives are described in US 5121029. Further styrylamines can be found in US 2007/0122656 A1.
• Particularly preferred styrylamine compounds are the compounds of the formula EM-1 described in US Pat. No. 7,250,532 B2 and the compounds of the formula EM-2 set out in DE 10 2005 058557 A1:
• fluorescent emitters are selected from derivatives of naphthalene, anthracene, tetracene, benzanthracene, benzphenanthrene (DE 10 2009 005746), fluorene, fluoranthene, periflanthene, indenoperylene, phenanthrene, perylene (US Pat 2007/0252517 A1), Pyrene, Chrysen, Decacyclen, Coronen,
• anthracene compounds more preferably substituted in the 9,10-position are substituted anthracenes such as e.g. 9,10-diphenylanthracene and 9,10-bis (phenylethynyl) anthracene. Also, 1,4-bis (9'-ethynylanthracenyl) benzene is a preferred dopant.
• anthracenes such as e.g. 9,10-diphenylanthracene and 9,10-bis (phenylethynyl) anthracene.
• 1,4-bis (9'-ethynylanthracenyl) benzene is a preferred dopant.
• DMQA ⁇ , ⁇ '-dimethylquinacridone
• DCM 4- (dicyanoethylene) -6- (4-dimethylamino-styryl-2-methyl) -4H-pyran
• thiopyran polymethine, pyrylium and
• Blue fluorescence emitters are preferably polyaromatics, e.g. 9,10-di (2-naphthylanthracene) and other anthracene derivatives, derivatives of tetracene, xanthene, perylene, e.g. 2,5,8,1-tetra-f-butyl-perylene,
• Phenylene e.g. 4,4 '- (bis (9-ethyl-3-carbazovinylene) -1, 1'-biphenyl, fluorene, fluoranthene, arylpyrene (US 2006/0222886 A1), arylenevinylenes (US 5121029, US 5130603), bis (azinyl) imine-boron compounds (US
• 102008035413 disclosed hydrocarbons. Also particularly preferred are the compounds set forth in WO 2014/1 1 1269, especially compounds having a bis-indenofluorene backbone.
• WO 2014/1 1 1269 especially compounds having a bis-indenofluorene backbone.
• DE 102008035413 and WO 2014/1 1 1269 A2 are incorporated in the present application for purposes of disclosure by reference hereto.
• phosphorescent emitters can be found in WO 00/70655, WO 01/41512, WO 02/02714, WO 02/15645, EP 1 191613, EP 1 191612, EP 1 191614 and WO 05/033244 become.
• all phosphorescent complexes used in the prior art for phosphorescent OLEDs and as known to those skilled in the art of organic electroluminescence are suitable, and those skilled in the art may use other phosphorescent complexes without inventive step.
• Phosphorescent metal complexes preferably contain Ir, Ru, Pd, Pt, Os or Re.
• Preferred ligands are 2-phenylpyridine derivatives, 7,8-benzoquinoline derivatives, 2- (2-thienyl) pyridine derivatives, 2- (1-naphthyl) pyridine derivatives, 1-phenylisoquinoline derivatives, 3-phenylisoquinoline derivatives or 2-phenylquinoline derivatives. All of these compounds may be substituted, e.g. for blue with fluorine, cyano and / or trifluoromethyl substituents.
• Auxiliary ligands are preferably acetylacetonate or picolinic acid.
• complexes of Pt or Pd with tetradentate ligands according to formula EM-16 are suitable as emitters.
• enlarged-ring Pt-porphyrin complexes (US 2009/0061681 A1) and Ir complexes are suitable, for example 2,3,7,8,12,13,17,18-octaethyl-21H, 23H-porphyrin-Pt (II ), Tetraphenyl-Pt (II) -tetrabenzoporphyrin (US 2009/0061681 A1), c / ' s -bis (2-phenylpyridinato-N, C 2 ') Pt (II), c / ' s-Bis (2-) 2'-thienyl) pyridinato-N, C 3 ') Pt (II), c / ' s -bis (2- (2'-thienyl) quinolinato-N, C 5 ') Pt (II), (2- (4,6-Difluorophenyl) pyridinato-N, C 2
• tridentate ligand phosphorescent emitters are described in US 6824895 and US 10/729238. Red-emitting phosphorescent complexes can be found in US 6835469 and US 6830828.
• Particularly preferred compounds or groups or structural elements which are used as phosphorescent dopants include those described in US 2001/0053462 A1 and Inorg. Chem. 2001, 40 (7), 1704-171 1, JACS 2001, 123 (18), 4304-4312 described compounds according to formula EM-17 and derivatives thereof.
• EP 134871 1 described compounds according to formula EM-18 to EM
• Quantum dots can also be used as emitters, these materials being disclosed in detail in WO 201 1/076314 A1.
• Compounds or groups or structural elements which are used as host materials, in particular together with emitting compounds, include materials of various classes.
• Host materials generally have larger band gaps between HOMO and LUMO than the emitter materials used.
• preferred host materials exhibit either properties of a hole or electron transport material.
• host materials can have both electron and hole transport properties.
• Host materials are sometimes referred to as matrix material, especially if the host material in combination with a
• Phosphorescent emitter is used in an OLED.
• Preferred host materials or co-host materials which are used in particular together with fluorescent dopants are selected from the classes of the oligoarylenes (for example 2,2 ', 7,7'-tetraphenyl-spirobifluorene according to EP 676461 or dinaphthylanthracene), in particular the oligoarylenes containing condensed aromatic groups such as anthracene, benzanthracene, benzphenanthrene (DE 10 2009 005746, WO 09/069566), phenanthrene, tetracene, coronene, chrysene, fluorene,
• the oligoarylenes for example 2,2 ', 7,7'-tetraphenyl-spirobifluorene according to EP 676461 or dinaphthylanthracene
• the oligoarylenes containing condensed aromatic groups such as anthracen
• the electron-conducting compounds in particular ketones, phosphine oxides, sulfoxides, carbazoles, spiro-carbazoles, indenocarbazoles, etc. (for example according to WO 05/084081 and WO 05/084082), the
• Atropisomers for example according to WO 06/048268
• the boronic acid derivatives for example according to WO 06/1 17052
• the benzanthracenes for example according to WO 08/145239
• oligoarylenes containing anthracene, benzanthracene and / or pyrene or atropisomers of these compounds.
• an oligoarylene is to be understood as meaning a compound in which at least three aryl or arylene groups are bonded to one another.
• Preferred host materials are selected in particular
• the group Ar 6 is anthracene and the groups Ar 5 and Ar 7 are bonded in positions 9 and 10, these groups being optionally substituted.
• at least one of the groups Ar 5 and / or Ar 7 is a fused aryl group selected from 1- or 2-naphthyl, 2-, 3- or 9-phenanthrenyl or 2-, 3-, 4-, 5-, 6- or 7- benzanthracenyl.
• Anthracene-based compounds are described in US 2007/0092753 A1 and US 2007/0252517 A1, for example 2- (4-methylphenyl) -9,10-di- (2-naphthyl) anthracene, 9- (2-naphthyl) -10- (1,1'-biphenyl) anthracene and 9,10-bis [4- (2,2-diphenylethenyl) phenyl] anthracene, 9,10-diphenylanthracene, 9,10-bis (phenylethynyl) anthracene and 1, 4-bis (9'-ethynylanthracenyl) benzene.
• Further preferred compounds are derivatives of arylamine, styrylamine, fluorescein, diphenylbutadiene, tetraphenylbutadiene, cyclopentadienes, tetraphenylcyclopentadiene, pentaphenylcyclopentadiene, coumarin, oxadiazole, bisbenzoxazoline, oxazole, pyridine, pyrazine, imine, benzothiazole, benzoxazole, benzimidazole (US 2007/0092753 A1), e.g.
• Metal oxinoid complexes such as LiQ or AlQ3 can be used as co-hosts.
• Structural elements with oligoarylene as matrix are described in US 2003/0027016 A1, US Pat. No. 7,326,371 B2, US 2006/043858 A, WO 2007/1 14358, WO 08/145239, JP 3148176 B2, EP 1009044, US 2004/018383, WO 2005/061656 A1, EP 0681019B1, WO 2004 / 013073A1, US 5077142, WO 2007/065678 and DE 102009005746, with particularly preferred compounds being described by the formulas H-102 to H-108.
• compounds or groups or structural elements which can be used as host or matrix include materials which are used together with phosphorescent emitters. To these compounds or groups or
• Structural elements which can also be used as structural elements in polymers include CBP (N, N-biscarbazolylbiphenyl),
• Carbazole derivatives eg according to WO 05/039246, US 2005/0069729, JP 2004/288381, EP 1205527 or WO 08/086851
• azacarbazoles eg according to EP 1617710, EP 161771 1, EP 1731584, JP 2005/347160
• ketones eg according to WO 04/093207 or according to DE 102008033943
• Phosphine oxides e.g., sulfoxides and sulfones (e.g., according to WO 05/003253), oligophenylenes, aromatic amines (e.g., according to US 2005/0069729), bipolar matrix materials (e.g., according to WO 07/137725), silanes (e.g.
• Formula H-1 19 Formula H-120 Particularly preferred compounds or groups or structural elements for the preparation of the matrix for phosphorescent dopants are disclosed inter alia in DE 102009022858, DE 102009023155, EP 652273 B1, WO 07/063754 and WO 08/056746, with particularly preferred compounds represented by the formulas H-121 to H-124 will be described.
• Compounds or groups or structural elements which can serve as host material are in particular preferred substances which has at least one nitrogen atom. These include preferably aromatic amines, triazine and carbazole derivatives. In particular, carbazole derivatives show a surprisingly high efficiency. Triazine derivatives unexpectedly lead to high lifetimes of electronic devices with said compounds. It may also be preferred to use a plurality of different matrix materials as a mixture, in particular at least one electron-conducting matrix material and at least one hole-conducting matrix material. Also preferred is the use of a mixture of one
• charge-transporting matrix material and an electrically inert matrix material which does not or not to a significant extent on
• Charge transport is involved, such. As described in WO 2010/108579.
• Structure elements are used which improve the transition from the singlet to the triplet state and which, used in support of the functional compounds with emitter properties, improve the phosphorescence properties of these compounds.
• Carbazole and bridged carbazole dimer units are particularly suitable for this purpose, as are described, for example, in US Pat. in WO 04/070772 A2 and WO 04/1 13468 A1.
• Also suitable for this purpose are ketones, phosphine oxides, sulfoxides, sulfones, silane derivatives and similar compounds, as described, for example, in US Pat. in WO 05/040302 A1.
• reducing agents i.
• N-heterocyclic compounds e.g., WO 2009/000237 A1
• acridines e.g., US 2007/145355 A1
• inventively usable compounds OSM1 and OSM2 can be designed as a wide-band gap material.
• Wide-band gap material is understood to mean a material as disclosed in US Pat. No. 7,294,849. These systems show particular advantageous performance data in electroluminescent devices.
• the used as a wide-band gap material is understood to mean a material as disclosed in US Pat. No. 7,294,849.
• the band gap can be calculated among other things by the energy levels of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO).
• HBM hole blocking material
• Hole blocking material a lower HOMO level than that
• Hole transport material in the adjacent layer Hole blocking layers are often interposed between the light emitting layer and the
• Electron transport layer arranged in OLEDs Electron transport layer arranged in OLEDs.
• any known hole blocking material can be used.
• any known hole blocking material can be used.
• other hole blocking materials set forth elsewhere in the present application there are
• an electron blocking material denotes a Material which prevents or minimizes the passage of electrons in a multilayer composite, in particular if this material is arranged in the form of a layer adjacent to an emission layer or an electron-conducting layer.
• an electron blocking material has a higher LUMO level than that
• Electron transport material in the adjacent layer is Electron transport material in the adjacent layer.
• any known electron-blocking material can be used.
• convenient electron-blocking materials are transition metal complexes such as Ir (ppz) 3 (US 2003/0175553),
• compositions shown below comprising two, three or four compounds having structures according to the following formulas:
• the at least two organically functional compounds OSM1 and OSM2 are used in a weight ratio in the range from 1: 1 to 100: 1, preferably 1: 1 to 10: 1, the ratio of the compounds to one another being Constitutional isomers, with the highest or the lowest proportion is used for the calculation.
• the at least two organic functional are selected from the at least two organic functional
• Embodiments can be combined with each other as desired. In a particularly preferred embodiment of the invention, the abovementioned preferred embodiments apply simultaneously.
• the compounds according to the invention can in principle be prepared by various methods. However, they have the following
• a further subject of the present invention is a process for the preparation of the mixtures comprising at least two organically functional compounds OSM1 and OSM2, in which two organically functional compounds OSM1 and OSM2 are prepared and mixed or by a coupling reaction a mixture comprising at least two organically functional compounds OSM1 and OSM2.
• Suitable compounds OSM1 and OSM2 can be known from
• Precursors are obtained via coupling reactions, via which the previously set forth groups, structural elements and / or substituents S1 and S2 are connected.
• Particularly suitable and preferred coupling reactions, all leading to C-C linkages and / or CN linkages, are those according to BUCHWALD, SUZUKI, YAMAMOTO, SILENCE, HECK, NEGISHI,
• the compounds of the invention comprising structures of formula (I) in high purity, preferably more than 99% (determined by means of 1 H-NMR and / or HPLC).
• the compounds of the invention OSM 1 and OSM2 may also have suitable substituents, for example by longer
• Alkyl groups (about 4 to 20 carbon atoms), in particular branched
• Alkyl groups or optionally substituted aryl groups, for example xylyl, mesityl or branched terphenyl or
• Solvent cause such as butyl benzoate, 3-phenoxytoluene, toluene or xylene at room temperature in sufficient concentration soluble to process the compounds from solution can. These soluble compounds are particularly suitable for processing from solution, for example by printing processes.
• the compounds OSM1 and OSM2 which can be used according to the invention can also be mixed with a polymer. It is also possible to incorporate these compounds covalently into a polymer. This is especially possible with compounds which react with reactive
• Leaving groups such as bromine, iodine, chlorine, boronic acid or boronic acid esters, or with reactive, polymerizable groups, such as olefins or Oxetanes, are substituted. These can be used as monomers for the production of corresponding oligomers, dendrimers or polymers.
• the oligomerization or polymerization is preferably carried out via the halogen functionality or the boronic acid functionality or via the polymerizable group. It is also possible to crosslink the polymers via such groups.
• the compounds of the invention and polymers can be used as a crosslinked or uncrosslinked layer.
• Another object of the invention are therefore mixtures of
• Oligomers polymers or dendrimers containing one or more constitutional isomers, wherein one or more bonds of the
• Polymers, oligomers or dendrimers may be conjugated, partially conjugated or non-conjugated.
• the oligomers or polymers may be linear, branched or dendritic.
• compounds OSM1 which can be used according to the invention can be polymerized to form a polymer and the compounds OSM 2 can be polymerized to give a polymer, the respective polymers being mixed. Further, compounds OSM1 and OSM2 can be polymerized to a polymer. In addition, various mixtures of compounds OSM1 and OSM2 which can be used according to the invention can be polymerized, with the various polymers subsequently being mixed.
• the compounds OSM1 and OSM2 which can be used according to the invention can be polymerized, with the various polymers subsequently being mixed.
• polymer, oligomer or dendrimer according to the invention at least two different components, which are in their
• Monomer composition with respect to the components OSM1 and OSM2 differ.
• the monomers according to the invention are homopolymerized or copolymerized with further monomers.
• Suitable and preferred comonomers which form the polymer backbone are selected from fluorenes (eg according to EP 842208 or WO
• Carbazoles for example according to WO 2004/070772 or WO 2004/1 13468
• thiophenes for example according to EP 1028136
• dihydrophenanthrenes for example according to WO 2005/014689
• cis and trans indenofluorenes cf. eg according to WO 2004/041901 or WO 2004/1 13412
• ketones eg according to WO 2005/040302
• phenanthrenes eg according to WO 2005/104264 or WO 2007/017066
• the polymers, oligomers and dendrimers may also contain further units, for example hole transport units, in particular those based on triarylamines, and / or electron transport units. Of particular interest are furthermore according to the invention
• formulations may be, for example, solutions, dispersions or emulsions. It may be preferable to use mixtures of two or more solvents.
• Suitable and preferred solvents are, for example, toluene, anisole, o-, m- or p-xylene, methyl benzoate, mesitylene, tetralin, veratrol, THF, methyl THF, THP, chlorobenzene, dioxane, phenoxytoluene, in particular 3-phenoxytoluene, (-) -Fenchone, 1, 2,3,5-tetramethylbenzene, 1, 2,4,5-tetramethylbenzene, 1-methylnaphthalene, 2-methylbenzothiazole, 2-
• Phenoxyethanol 2-pyrrolidinone, 3-methylanisole, 4-methylanisole, 3,4-dimethylanisole, 3,5-dimethylanisole, acetophenone, a-terpineol,
• Another object of the present invention is therefore a formulation containing a mixture of
• the further compound may be for example a solvent, in particular one of the abovementioned solvents or a mixture of these solvents.
• the further compound may also be at least one further organic or inorganic compound which is also in the electronic
• an emitting compound in particular a phosphorescent dopant, and / or another matrix material.
• This further compound may also be polymeric.
• Yet another subject of the present invention is therefore a composition comprising a mixture according to the invention of compounds OSM1 and OSM2 which can be used according to the invention and at least one further organically functional material.
• Functional materials are generally the organic or inorganic materials incorporated between the anode and cathode.
• the organic functional material selected from the group consisting of fluorescent emitters, phosphorescent emitters, emitters displaying TADF (thermally activated delayed fluorescence), host materials, electron transport materials, electron injection materials, hole transport materials, hole injection materials,
• Electron blocking materials hole blocking materials, wide band gap materials, p-dopants and n-dopants.
• the mixture according to the invention of compounds which can be used according to the invention OSM1 and OSM2 as emitter preferably as
• novel mixtures of inventive compounds OSM1 and OSM2 according to the invention can be used as matrix material, in particular for phosphorescent emitters, wherein matrix materials are often used in combination with other matrix materials.
• the present invention therefore also relates to a composition
• a composition comprising at least one mixture according to the invention of
• the further matrix material has electron-transporting properties.
• a further subject matter of the present invention is a composition comprising at least one mixture according to the invention of compounds OSM1 and OSM2 which can be used according to the invention or the preferred embodiments described above and below as well as at least one wide band gap material, whereby the term wide band Gap Material is a material as understood in the disclosure of US 7,294,849.
• the additional compound may have a band gap of 2.5 eV or more, preferably 3.0 eV or more, more preferably 3.5 eV or more.
• the band gap can be calculated among other things by the energy levels of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO).
• Molecular orbitals in particular the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO), their energy levels and the energy of the lowest triplet state Ti or the lowest excited singlet state Si of the materials are determined by quantum chemical calculations.
• HOMO highest occupied molecular orbital
• LUMO lowest unoccupied molecular orbital
• HOMO (eV) ((HEh * 27.212) -0.9899) / 1 .1206
• the lowest triplet state Ti is defined as the energy of the triplet state with the lowest energy, which results from the described quantum chemical calculation.
• the lowest excited singlet state Si is defined as the energy of the excited singlet state with the lowest energy which results from the described quantum chemical calculation.
• the method described here is independent of the software package used and always gives the same results. Examples of programs often used for this purpose are "Gaussian O W" (Gaussian Inc.) and Q-Chem 4.1 (Q-Chem, Inc.)
• the present invention also relates to a composition comprising at least one mixture of inventive compounds OSM1 and OSM2 or the preferred embodiments described above and below and at least one emitter which is preferably selected from
• Emitters exhibiting TADF thermally activated delayed fluorescence
• the mixture preferably comprising at least one phosphorescent emitter present in a stereoisomeric mixture
• a dopant in a system comprising a matrix material and a dopant, is understood to mean the component whose proportion in the mixture is the smaller.
• a matrix material in a system containing a matrix material and a dopant is understood to mean the component whose proportion in the mixture is the larger.
• Preferred phosphorescent emitters also referred to herein as
• phosphorescent dopants for use in matrix systems, preferably mixed-matrix systems, are the preferred phosphorescent dopants specified below.
• phosphorescent dopants are typically
• Suitable phosphorescent compounds are in particular compounds which emit light, preferably in the visible range, with suitable excitation, and also at least one atom of atomic number greater than 20, preferably greater than 38 and less than 84, particularly preferably greater than 56 and less than 80 contain, in particular a metal with this atomic number.
• Preferred phosphorescence emitters are compounds comprising copper, molybdenum, tungsten, rhenium,
• Examples of the emitters described above can be found in the applications WO 00/70655, WO 2001/41512, WO 2002/02714, WO 2002/15645, EP 1 191613, EP 1 191612, EP 1 191614, WO 05/033244, WO 05/019373, US 2005/0258742, WO 2009/146770, WO 2010/015307, WO
• EP 1300441 1 .8, EP 14000345.0, EP 14000417.7 and EP 14002623.8 are taken. Generally, all are suitable
• Phosphorescent complexes as used in the prior art for phosphorescent OLEDs and how they
• An electronic device is understood as meaning a device which contains anode, cathode and at least one layer lying between the anode and the cathode, this layer containing at least one organic or organometallic compound.
• the electronic device according to the invention thus contains anode, cathode and at least one intermediate layer which contains at least one compound comprising structures of the formula (I) and / or (II).
• preferred electronic devices are selected from the group consisting of organic electroluminescent devices (OLEDs, PLEDs), organic integrated circuits (O-ICs), organic field effect transistors (O-FETs), organic thin film transistors (O-TFTs), organic light-emitting Transistors (O-LETs), organic solar cells (O-SCs), organic optical detectors, organic photoreceptors, organic field quench devices (O-FQDs), organic electrical sensors, light-emitting electrochemical cells (LECs),
• organic laser diodes O-lasers
• organic plasmon emitting devices DM Koller et al., Nature Photonics 2008, 1-4
• organic electroluminescent devices OLEDs, PLEDs
• phosphorescent OLEDs containing in at least one layer at least a compound comprising structures of formula (I)
• organic electroluminescent devices Active components are generally the organic or inorganic materials incorporated between the anode and cathode, for example charge injection, charge transport or charge blocking materials, but especially emission materials and matrix materials.
• a preferred embodiment of the invention are organic electroluminescent devices.
• the organic electroluminescent device includes cathode, anode and at least one emitting layer.
• they may also contain further layers, for example in each case one or more hole injection layers, hole transport layers, hole blocking layers, electron transport layers,
• Electron injection layers, exciton blocking layers, Electron blocking layers, charge generation layers and / or organic or inorganic p / n junctions It is possible that one or more hole transport layers are p-doped, for example with metal oxides, such as M0O3 or WO3 or with (per) fluorinated
• Electron transport layers are n-doped.
• interlayers may be introduced between two emitting layers, which have, for example, an exciton-blocking function and / or the
• the organic electroluminescent device can be a
• Used compounds that can fluoresce or phosphoresce are particularly preferred.
• the three layers exhibiting blue, green and orange or red emission (for the basic structure see, for example, WO 2005/01 1013) or systems having more than three emitting layers. It may also be a hybrid system wherein one or more layers fluoresce and one or more other layers phosphoresce.
• the organic electroluminescent device contains the mixture according to the invention of compounds OSM1 and OSM2 which can be used according to the invention or the preferred embodiments listed above as matrix material, preferably as hole-conducting matrix material in one or more emitting layers, preferably in combination with another matrix material, preferably an electron-conducting matrix material.
• the further matrix material is a hole-transporting compound.
• the further matrix material is a Large bandgap compound that does not or does not contribute significantly to the hole and electron transport in the layer.
• An emitting layer comprises at least one emitting compound.
• Compounds OSM1 and OSM2 or according to the preferred embodiments can be used are aromatic ketones, aromatic phosphine oxides or aromatic sulfoxides or sulfones, for. B. according to WO 2004/013080, WO 2004/093207, WO 2006/005627 or WO 2010/006680, triarylamines, especially monoamines, z. B. according to WO 2014/015935, carbazole derivatives, z. B.
• CBP N, N-Biscarbazolylbiphenyl
• CBP in WO 2005/039246, US 2005/0069729, JP 2004/288381, EP 1205527 or WO 2008/086851 disclosed carbazole derivatives, indolocarbazole derivatives, z. B. according to WO 2007/063754 or WO 2008/056746, indenocarbazole derivatives, for. B. according to WO 2010/136109 and WO
• bipolar matrix materials for. B. according to WO 2007/137725, silanes, z. B. according to WO 005/1 1 1 172, azaborole or boronic esters, z. B. according to WO 2006/1 17052, triazine derivatives, for. B. according to WO 2010/015306, WO 2007/063754 or WO 2008/056746, zinc complexes, for. B. according to EP 652273 or WO 2009/062578, diazasilol or tetraazasilol derivatives, z. B. according to WO 2010/054729, diazaphosphole derivatives, z. B. according to WO 2010/054730, bridged carbazole derivatives, z. B. according to US 2009/0136779, WO 2010/050778, WO
• Phosphorescent emitter which emits shorter wavelength than the actual emitter, be present as a co-host in the mixture.
• Preferred co-host materials are triarylamine derivatives, especially monoamines, indenocarbazole derivatives, 4-spirocarbazole derivatives, lactams and carbazole derivatives. It may also be preferred to use a plurality of different matrix materials as a mixture, in particular at least one electron-conducting matrix material and at least one hole-conducting matrix material. Also preferred is the use of a mixture of one
• charge-transporting matrix material and an electrically inert matrix material which does not or not to a significant extent on
• Charge transport is involved, such. As described in WO 2010/108579.
• the triplet emitter with the shorter-wave emission spectrum serves as a co-matrix for the triplet emitter with the longer-wave emission spectrum.
• a mixture according to the invention of compounds OSM1 and OSM2 which can be used according to the invention is particularly preferably used as matrix material in an emission layer of an organic electronic device, in particular in an organic electroluminescent device, for example in an OLED or OLEC.
• the proportion of the matrix material in the emitting layer in this case is between 50.0 and 99.9% by volume, preferably between 60.0 and 99.5% by volume and particularly preferred for fluorescent emitting layers between 92.0 and 99.5% by volume and for phosphorescent layers, which emit in the green or red range, between 60.0 and 70.0 vol .-% and and for phosphorescent layers that emit in the blue range, between 90.0 and 97.0 vol .-%.
• the proportion of the dopant is between 0.1 and
• An emitting layer of an organic electroluminescent device may also contain systems comprising a plurality of matrix materials (mixed-matrix systems) and / or multiple dopants. Also in this case, the dopants are generally those materials whose proportion in the system is smaller and the matrix materials are those materials whose proportion in the system is larger.
• the dopants are generally those materials whose proportion in the system is smaller and the matrix materials are those materials whose proportion in the system is larger.
• the proportion of a single matrix material in the system may be smaller than the proportion of a single dopant.
• the mixtures according to the invention of compounds OSM1 and OSM2 which can be used according to the invention or the preferred and previously described preferred embodiments are used as a component of mixed-matrix systems.
• the mixed-matrix systems preferably comprise two or three different matrix materials, more preferably two different matrix materials.
• One of the two materials preferably constitutes a material with hole-transporting properties and the other material a material with electron-transporting properties
• electron-transporting and hole-transporting properties of the mixed-matrix components may also be mainly or completely combined in a single mixed-matrix component, with the further or the further mixed-matrix components fulfilling other functions.
• the two different matrix materials may be present in a ratio of 1:50 to 1: 1, preferably 1:20 to 1: 1, more preferably 1:10 to 1: 1 and most preferably 1: 4 to 1: 1. Preference is given to mixed-matrix systems in
• an electronic device preferably an organic electroluminescent device, is the subject of the present invention, which comprises one or more compounds according to the invention and / or at least one oligomer, polymer or dendrimer according to the invention in one or more hole-conducting layers as a hole-conducting compound.
• an electronic device preferably an organic electroluminescent device, which comprises one or more compounds according to the invention and / or at least one oligomer, polymer or dendrimer according to the invention in emitting layers, as the emitting compound,
• a fluorescent emitter preferably as a fluorescent emitter, or as a matrix material, preferably in combination with a phosphorescent emitter.
• low work function metals, metal alloys or multilayer structures of various metals are preferable, such as alkaline earth metals, alkali metals, main group metals or lanthanides (eg, Ca, Ba, Mg, Al, In, Mg, Yb, Sm, etc.).
• alloys of an alkali or alkaline earth metal and silver for example an alloy of magnesium and silver.
• further metals which have a relatively high work function such as, for example, B. Ag, which then usually combinations of metals, such as Mg / Ag, Ca / Ag or Ba / Ag are used. It may also be preferred between a metallic cathode and the
• organic semiconductors to introduce a thin intermediate layer of a material with a high dielectric constant.
• a material with a high dielectric constant for example, alkali metal or alkaline earth metal fluorides, but also the corresponding oxides or carbonates in question (eg., LiF, L12O, BaF2,
• organic alkali metal complexes for.
• the layer thickness of this layer is preferably between 0.5 and 5 nm.
• high workfunction materials are preferred.
• the anode has a work function greater than 4.5 eV. Vacuum up.
• metals with a high redox potential such as Ag, Pt or Au, are suitable for this purpose.
• electrodes z. B. AI / Ni / NiO, AI / PtO x
• metal / metal oxide may be preferred, metal / metal oxide.
• At least one of the electrodes must be transparent or partially transparent to allow either the irradiation of the organic material (O-SC) or the extraction of light (OLED / PLED, O-LASER).
• Preferred anode materials here are conductive mixed metal oxides. Particularly preferred are indium tin oxide (ITO) or indium zinc oxide (IZO). Also preferred are conductive, doped organic materials, in particular conductive doped polymers, for. B. PEDOT, PANI or derivatives of these polymers.
• a p-doped hole transport material is applied to the anode as a hole injection layer, wherein as p-dopants metal oxides, for example M0O3 or WO3, or (per) fluorinated electron-poor
• Aromatics are suitable. Further suitable p-dopants are HAT-CN (hexacyano-hexaazatriphenylene) or the compound NPD9 from Novaled. Such a layer simplifies the hole injection in materials with a low HOMO, ie a HOMO of large magnitude.
• the device is structured accordingly (depending on the application), contacted and finally hermetically sealed because the life of such devices drastically shortened in the presence of water and / or air.
• an electronic device in particular an organic electroluminescent device, which is characterized in that one or more layers of solution, such as. B. by spin coating, or with any printing process, such.
• B. Screen printing, flexographic printing, offset printing or Nozzle-Printing, more preferably, however, LITI (Light Induced Thernnal Imaging, thermal transfer printing) or ink-jet printing (ink jet printing) can be produced.
• LITI Light Induced Thernnal Imaging, thermal transfer printing
• ink-jet printing ink jet printing
• organic electroluminescent devices comprising compounds according to the invention comprising structures of the formula (I) and / or (II) or the preferred embodiments listed above.
• the electronic devices according to the invention are distinguished by one or more of the following surprising advantages over the prior art:
• Concentration may have as solutions which have only usable according to the invention compounds OSM1 or OSM2.
• Embodiments show a very high stability and lead to compounds with a very long life.
• Electroluminescent devices the formation of optical signals
• Loss channels are avoided. As a result, these devices are distinguished by a high PL and thus high EL efficiency of emitters or an excellent energy transfer of the matrices to dopants.
• Electroluminescent devices containing mixtures of compounds which can be used according to the invention OSM1 and OSM2, or oligomers, polymers or dendrimers derived therefrom, or the preferred and previously described ones
• Electron-conductive materials, hole-conducting materials and / or host materials have excellent efficiency. In this case, mixtures of inventively usable effect
• the mixtures according to the invention are suitable for use in an electronic device. It is under an electronic
• Device understood a device which contains at least one layer containing at least one organic compound.
• the component may also contain inorganic materials or even layers which are completely composed of inorganic materials.
• Another object of the present invention is therefore the use of the mixtures according to the invention in an electronic device, in particular in an organic Elektrolumi- nzenzzenzvorraum.
• a further further subject of the present invention is the use of a mixture according to the invention of compounds OSM1 and OSM2 which can be used according to the invention and / or a
• oligomer, polymer or dendrimer according to the invention in an electronic device as a fluorescent emitter, host material for phosphorescent emitters, electron transport material and / or hole transport material, preferably as a host material for
• phosphorescent emitters or as a hole transport material or as an electron transport material.
• Yet another object of the present invention is an electronic device containing at least one of the above-mentioned mixtures according to the invention.
• Electronic device is particularly preferably selected from the group consisting of organic electroluminescent devices (OLEDs, PLEDs), organic integrated circuits (O-ICs), organic field-effect transistors (O-FETs), organic thin-film transistors (O-TFTs), organic light-emitting
• O-LETs organic solar cells
• O-SCs organic solar cells
• O-FQDs organic field quench devices
• organic electrical sensors light-emitting electrochemical cells
• LECs organic laser diodes
• O- Laser organic laser diodes
• organic plasmon emitting devices DM Koller et al., Nature Photonics 2008, 1 -4
• OLEDs organic electroluminescent devices
• PLEDs organic electroluminescent devices
• the organic electroluminescent device according to the invention does not contain a separate hole injection layer and / or hole transport layer and / or hole blocking layer and / or electron transport layer, ie the emitting layer directly adjoins the hole injection layer or the anode and / or borders the emitting layer directly to the electron transport layer or the electron injection layer or the cathode, such as in WO 2005/053051 described.
• a metal complex which is the same or similar to the metal complex in the emitting layer, directly adjacent to the emitting layer as a hole-transporting or hole-injection material, such as.
• the mixtures according to the invention of compounds OSM1 and OSM2 which can be used according to the invention generally have very good properties when used in organic electroluminescent devices.
• Electroluminescent device in particular the efficiency and the
• Solvents tested for stability Toluene and 3-phenoxytoluene are used as solvents by way of example.
• the individual substances and isomer mixtures are used according to the invention in single material concentrations of 10 g / L to 40 g / L.
• the individual substances and isomer mixtures are dissolved in the solvents at room temperature and stored after complete dissolution for 36 hours at room temperature. After this time, the solutions are visually examined for precipitation.
• Table 3 Stability of the isomer mixtures according to the invention in different solvents, the concentration data g / L being based on the concentration of the individual materials in the respective
• the total concentration of materials in the mixture gives from the mixing ratio used (for example 80% M1 and 20% M2), the mixing ratio being given in% by weight.
• two different materials are used, which are structural isomers to each other.
• the structures are shown in Table 4 from e
• HIL Hole injection layer
• HTL hole transport layer
• Emission layer (60 nm)
• HBL hole blocking layer
• Electron transport layer (ETL) (40 nm)
• PEDOTPSS poly (3,4-ethylenedioxy-2,5-thiophene): polystyrene sulfonate, obtained from Heraeus Precious Metals GmbH & Co. KG, Germany.
• PEDOTPSS is spun in air from water and subsequently heated in air at 180 ° C for 10 minutes to remove residual water.
• the hole transport layer and the emission layer are applied.
• the hole transport layer used is crosslinkable.
• a polymer of the structure shown below is used according to
• WO2010 / 097155 can be synthesized.
• the hole transport polymer is dissolved in toluene.
• the typical solids content of such solutions is about 5 g / l, if, as here, the typical for a device layer thickness of 20 nm is to be achieved by spin coating.
• the layers are spin-coated in an inert gas atmosphere, in this case argon, and baked at 180 ° C. for 60 minutes.
• the emission layer is always composed of at least two matrix materials (host material, host material, H) and an emitting dopant (dopant, emitter, D). Furthermore, mixtures of several matrix materials and co-dopants can occur.
• Weight portion also of 40% and dopant D in a weight fraction of 20% in the emission layer is present.
• Emission layer is dissolved in toluene or optionally chlorobenzene.
• the typical solids content of such solutions is about 18 g / l, if, as here, the typical for a device layer thickness of 60 nm is to be achieved by spin coating.
• the layers are spin-coated in an inert gas atmosphere, in the present case argon, and baked at 160 ° C. for 10 minutes. Materials used are listed in Tables 10 and 11 - these are both known compounds and
• the materials for the electron transport layer are in one
• Electron transport layer consist of more than one material, which are admixed by co-evaporation in a certain volume fraction.
• An indication such as ETM1: ETM2 (50%: 50%) here means that the materials ETM1 and ETM2 are present in a volume fraction of 50% each in the layer.
• the materials used in the present case are shown in Table 10.
• the cathode is formed by the thermal evaporation of a 100 nm thick aluminum layer.
• Table 1 1 Structural formulas of the isomeric materials
• the OLEDs are characterized by default.
• the electroluminescence spectra, current-voltage-luminance characteristics (IUL characteristics) are assumed assuming a Lambertian
• LD80 @ 10000 cd / m2 is the lifetime until the OLED has dropped to 80% of the initial intensity, ie 8000 cd / m2, at a starting brightness of 10000 cd / m2.
• the optoelectronic characteristics of the various OLEDs are summarized in Table 13.
• the examples Compl and Comp2 are comparative examples with isomer-pure mixtures, the example E1 shows data from OLEDs with isomer mixtures according to the invention. According to the invention, two isomers are used in a 1: 1 mixture at the same total concentration. The exact description of the materials used in the EML can be found in Table 12.
• Table 12 EML mixtures of the different device examples with indication of the mixing ratios in percent by weight.

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