WO2016096069A1 - Verbindungen für elektronische vorrichtungen - Google Patents
Verbindungen für elektronische vorrichtungen Download PDFInfo
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- WO2016096069A1 WO2016096069A1 PCT/EP2015/002264 EP2015002264W WO2016096069A1 WO 2016096069 A1 WO2016096069 A1 WO 2016096069A1 EP 2015002264 W EP2015002264 W EP 2015002264W WO 2016096069 A1 WO2016096069 A1 WO 2016096069A1
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- 0 *1*(*2*(*3)***4*2****4)=*3*2*****12 Chemical compound *1*(*2*(*3)***4*2****4)=*3*2*****12 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C211/00—Compounds containing amino groups bound to a carbon skeleton
- C07C211/43—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton
- C07C211/57—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings being part of condensed ring systems of the carbon skeleton
- C07C211/61—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings being part of condensed ring systems of the carbon skeleton with at least one of the condensed ring systems formed by three or more rings
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent materials, e.g. electroluminescent or chemiluminescent
- C09K11/06—Luminescent materials, e.g. electroluminescent or chemiluminescent containing organic luminescent materials
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- H—ELECTRICITY
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- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
- H10K85/623—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene containing five rings, e.g. pentacene
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
- H10K85/633—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2603/00—Systems containing at least three condensed rings
- C07C2603/02—Ortho- or ortho- and peri-condensed systems
- C07C2603/52—Ortho- or ortho- and peri-condensed systems containing five condensed rings
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/10—Transparent electrodes, e.g. using graphene
- H10K2102/101—Transparent electrodes, e.g. using graphene comprising transparent conductive oxides [TCO]
- H10K2102/103—Transparent electrodes, e.g. using graphene comprising transparent conductive oxides [TCO] comprising indium oxides, e.g. ITO
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/10—Organic polymers or oligomers
- H10K85/111—Organic polymers or oligomers comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene
- H10K85/113—Heteroaromatic compounds comprising sulfur or selene, e.g. polythiophene
- H10K85/1135—Polyethylene dioxythiophene [PEDOT]; Derivatives thereof
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
- H10K85/626—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/654—Aromatic compounds comprising a hetero atom comprising only nitrogen as heteroatom
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Definitions
- the present invention relates to a compound of a formula (I).
- the compound is suitable for use as a functional material in an electronic device, in particular in an organic device
- Electroluminescent device OLED
- the invention relates to certain embodiments of electronic devices
- the present invention generally relates to electronic devices containing organic materials. Preferably, these are understood as meaning OLEDs and some other embodiments of electronic devices containing organic materials disclosed in the application later.
- a plurality of compounds are known as blue-fluorescent emitter compounds, in particular arylamines having one or more fused aryl groups and / or indenofluorene groups. Examples of these are the pyrene-arylamines disclosed in US 5153073. Further examples of arylamine emitters are those in the
- WO 2008/006449 disclosed benzoindenofluoreneamines.
- US 2012/0161615 describes the use of fluorenamines which have aromatic groups fused to the fluorene system.
- the compounds described are used as fluorescent emitters, but show mainly green and only a small green-blue emission. In US 2012/0161615 no blue emission is described.
- Amine derivatives including in particular a
- the 5,6,11,12-tetrahydrochrysene derivative is used as a fluorescent emitter in an OLED having a blue emission.
- the electronic device mentioned in EP 1950195 requires a high level
- the object is preferably to provide compounds with which a high
- Emitter connections are highly desirable for use in displays and lighting applications and are also highly desirable for matching the color impressions of the different colors in one
- the invention thus provides a compound of a formula (I)
- one or more H atoms in the above groups may be replaced by D, F, Cl, Br, I or CN, and wherein
- one or more H atoms in the above groups may be replaced by D, F, Cl, Br, I or CN, and wherein
- one or more H atoms in the above groups may be replaced by D, F, Cl, Br, I or CN, and wherein
- two or more radicals R 3 may be linked together and form a ring
- R 4 is the same or different at each occurrence H, D, F, Cl, Br, I, CN, a straight-chain alkyl or alkoxy group having 1 to 20
- R 4 may be linked together and form a ring.
- An aryl group for the purposes of this invention contains 6 to 60 aromatic ring atoms.
- a heteroaryl group in the context of this invention contains 5 to 60 aromatic ring atoms, at least one of which represents a heteroatom.
- the heteroatoms are preferably selected from nitrogen (N), oxygen (O), sulfur (S), silicon (Si) and / or phosphorus (P), and are particularly preferably selected from nitrogen (N), oxygen (O) and / or sulfur (S). This is the basic definition. In the description of the present invention, other preferences will be made indicated, for example, in terms of the number of aromatic
- an aryl group or a heteroaryl group is either a simple aromatic cycle, ie benzene, or a simple heteroaromatic cycle, for example pyridine, pyrimidine or
- heteroaromatic polycycle for example, naphthalene, phenanthrene, quinoline or carbazole understood.
- a condensed (anneliierter) aromatic or heteroaromatic polycycle consists in the context of the present application of two or more condensed simple aromatic or heteroaromatic cycles.
- Aromatic or heteroaromatic positions can be linked, are understood in particular groups derived from benzene, naphthalene, anthracene, phenanthrene, pyrene, dihydropyrene, chrysene, perylene, fluoranthene, Benzanthracen, Benzphenanthren, tetracene, pentacene, benzopyrene, furan, benzofuran , Isobenzofuran, dibenzofuran, thiophene, benzothiophene, isobenzothiophene, dibenzothiophene, pyrrole, indole, isoindole, carbazole, pyridine, quinoline, isoquinoline, acridine, phenanthridine, benzo-5,6-quinoline, benzo-6,7-quinoline,
- Anthroxazole phenanthroxazole, isoxazole, 1, 2-thiazole, 1, 3-thiazole,
- Benzothiazole pyridazine, benzopyridazine, pyrimidine, benzpyrimidine, quinoxaline, pyrazine, phenazine, naphthyridine, azacarbazole, benzocarboline, phenanthroline, 1, 2,3-triazole, 1, 2,4-triazole, benzotriazole, 1, 2,3-oxadiazole, 1, 2,4-oxadiazole, 1,2,5-oxadiazole, 1, 3,4-oxadiazole, 1, 2,3-thiadiazole, 1, 2,4-thiadiazole, 1, 2,5-thiadiazole, 1, 3,4-thiadiazole, 1, 3,5-triazine,
- the invention will be understood to mean an aryl group as defined above which is attached via an oxygen atom.
- An analogous definition applies to heteroaryloxy groups.
- An aromatic ring system in the sense of this invention contains 5 to 60 carbon atoms in the ring system.
- a heteroaromatic ring system in the context of this invention contains 5 to 60 aromatic ring atoms, of which at least one ring atom represents a heteroatom.
- the heteroatoms are preferably selected from nitrogen (N), oxygen (O), sulfur (S), silicon (Si) and / or phosphorus (P), and are particularly preferably selected from nitrogen (N), oxygen (O) and / or sulfur (S). This is the basic definition. If other preferences are given in the description of the present invention, for example with respect to the number of aromatic ring atoms or the number or type of heteroatoms contained, these apply.
- an aromatic or heteroaromatic ring system is to be understood as meaning a system which does not necessarily contain only aryl or heteroaryl groups but in which several aryl or heteroaryl groups are also replaced by a nonaromatic moiety (preferably less than 10) % of the atoms other than H), such as.
- a nonaromatic moiety preferably less than 10.
- sp-hybridized carbon atom may be connected.
- 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, alkenyl or alkynyl group or linked by a silyl group.
- systems in which two or more aryl or heteroaryl groups are linked together via single bonds, as aromatic or heteroaromatic ring systems in the sense of this
- Understood invention such as biphenyl, terphenyl or diphenyltriazine.
- aromatic or heteroaromatic ring system having 5 to 60 aromatic ring atoms, which may be substituted in each case with radicals as defined above and which may be linked via any positions on the aromatic or heteroaromatic, are understood in particular groups which are derived from benzene, naphthalene .
- 4,5,9,10-tetraazaperylene pyrazine, phenazine, phenoxazine, phenothiazine, fluorubin, naphthyridine, azacarbazole, benzocarboline, phenanthroline, 1, 2,3-triazole, 1, 2,4-triazole, benzotriazole, 1, 2, 3-oxadiazole, 1, 2,4-oxadiazole, 1, 2,5-oxadiazole, 1, 3,4-oxadiazole, 2,3-thiadiazole, 1, 2,4-thiadiazole, 1, 2,5-thiadiazole , 1, 3,4-thiadiazole, 1, 3,5-triazine, 1, 2,4-triazine,
- a group is a straight-chain alkyl group having 1 to 40 C atoms, or a branched or cyclic alkyl group having 3 to 40 C atoms, or an alkenyl or alkynyl group having 2 to 40 C atoms in which also individual H atoms or Ch groups can be substituted by the groups mentioned above in the definition of the radicals. This constitutes the basic Definition.
- C atoms are preferably methoxy, trifluoromethoxy, ethoxy, n-propoxy, i-propoxy, n-butoxy, i-butoxy, s-butoxy, t-butoxy, n-pentoxy, s-pentoxy, 2-methylbutoxy, n-hexoxy , Cyclohexyloxy, n-heptoxy, cycloheptyloxy, n-octyloxy, cyclooctyloxy, 2-ethylhexyloxy, pentafluoroethoxy,
- the formulation that two or more radicals can form a ring with one another means, inter alia, that the two radicals are an aryl group, a heteroaryl group, an aryloxy group, a heteroaryloxy group, an aromatic or heteroaromatic ring system, a cyclic ring Alkyl, alkenyl, or alkynyl group can form in the context of this invention.
- radical Z is CR 1 .
- compounds of the formula (I) are selected from the formulas (V-1) to (V-36) shown below. wherein the radical R 2 is as defined above and preferably a straight-chain alkyl group having 1 to 20 C atoms or an aromatic or
- heteroaromatic ring system comprising 5 to 30 ring atoms, and more preferably comprises a methyl or phenyl group; wherein the groups of formulas (V-1) to (V-36) may be substituted at free positions with a radical R 1 ; and wherein the radical R 1 or R 2 may be substituted by one or more of the radicals R 3 .
- radical R on each occurrence is identically or differently selected from H, N (R 2 ) 2, straight-chain alkyl groups having 1 to 10 C atoms, branched or cyclic alkyl groups having 3 to 10 C atoms, or aromatic or heteroaromatic ring systems having 5 to 30 ring atoms, where the abovementioned groups may each be substituted by one or more radicals R 3 . More preferably, R 1 is selected from H or N (R 2 ) 2.
- radical R 2 on each occurrence is identically or differently selected from H, straight-chain alkyl groups having 1 to 0 C atoms, branched or cyclic alkyl groups having 3 to 10 C atoms or from aromatic or heteroaromatic ring systems with 5 to 30 ring atoms, where the abovementioned groups can each be substituted by one or more radicals R 3 .
- R 2 is particularly preferably selected from straight-chain alkyl groups having 1 to 6 C atoms or from aromatic or heteroaromatic ring systems having 5 to 25 ring atoms.
- R 2 particularly preferably contains at least one group selected from benzene, naphthalene,
- Indenocarbazole pyridine, quinoline, isoquinoline, acridine, phenanthridine, benzimidazole, pyrimidine, pyrazine, benzofluorene, benzindene fluorene,
- Benzindenoinden and triazine where the abovementioned groups may each be substituted by one or more R 3 radicals.
- radical R 3 on each occurrence is identically or differently selected from H, F, Cl, Br, I, N (R) 2, a
- R 3 is particularly preferably selected from H, F, straight-chain alkyl groups having 1 to 6 C atoms or from aromatic ring systems having 5 to 8 ring atoms. It is further preferred that the radical R 1 is H or N (R 2 ) 2, where N (R 2 ) 2 is selected from the group consisting of the formulas (R 1 -1) to (R 1 -125) , which are shown below.
- X in compounds of the formula (IA) is preferably identically or differently selected on each occurrence from C (R 2 ) 2, Si (R 2 ) 2, O, S, NR 2 , PR 2 or P (OO) R 2 , More preferably, X is C (R 2 ) 2.
- radical R 1 on each occurrence is identically or differently selected from H, N (R 2 ) 2, straight-chain alkyl groups having 1 to 10 C atoms, branched or cyclic alkyl groups having 3 to 10 C atoms, or aromatic or heteroaromatic ring systems having 5 to 30 ring atoms, where the abovementioned groups may each be substituted by one or more radicals R 3 . More preferably, R 1 is selected from H or N (R 2 > 2.
- radical R 2 on each occurrence is identically or differently selected from H, straight-chain alkyl groups with 1 to 10 C atoms, branched or cyclic alkyl groups with 3 to 10 C atoms or from aromatic or heteroaromatic ring systems with 5 to 30 ring atoms, where the abovementioned groups can each be substituted by one or more radicals R 3 .
- R 2 is particularly preferably selected from straight-chain alkyl groups having 1 to 6 C atoms or from aromatic or heteroaromatic ring systems having 5 to 25 ring atoms.
- compounds of the following formula (IB) are preferred:
- X is preferably C (R 2 ) 2 .
- the subject matter of the present application is furthermore a process for the preparation of a compound according to the invention.
- the present application comprises a method for
- the coupling reaction is selected from Suzuki coupling reactions and Buchwald coupling reactions.
- the method comprises one or more ring closure reactions, more preferably acid-induced ring closure reactions of tertiary alcohols
- the compounds of the invention can be known with
- Synthesis steps of organic chemistry are produced.
- Preferred reactions are cyclization reactions, Buchwald couplings and Suzuki couplings.
- Scheme 1 is particularly useful in the synthesis of compounds of the invention containing a benzoindenoindene group wherein the benzoindenoindene group is substituted with an arylamino group or with multiple arylamino groups.
- Heteroaryl group, and X denotes any reactive group, preferably a sulfonic acid ester or halogen group, more preferably tosylate, triflate or bromine. All compounds shown may optionally be substituted with one or more organic radicals.
- an indenyl-naphthyl compound is prepared via a Suzuki coupling on the substituted indene compound with a substituted naphthyl compound.
- the naphthyl moiety of the indenyl-naphthyl compound contains a
- Carboxylic ester group which serves as precursor of the methylene bridge of
- Benzoindenoindens serves.
- the carboxylic acid ester group of the phenyl-naphthyl compound is converted by the addition of an organometallic compound to a tertiary alcohol, which upon addition of at least one acid undergoes the ring closure reaction to the methylene bridge of Benzoindenoindens.
- a methylation reaction is carried out to obtain a methyl-substituted benzoindenoindene (4) receive.
- the further steps are halogenation or a reaction of the methyl-substituted benzoindenoinden (4) with a
- arylamine-substituted benzoindenoindene compounds (5, 6, 7) can be reacted by further halogenations and subsequent Buchwald couplings to obtain benzoindenoindene compounds substituted with two or more arylamine groups.
- step (1) Reacting the indenyl-naphthyl compound obtained in step (1) with an organometallic compound to obtain a reduced indenyl-naphthyl compound;
- step (2) Reacting the reduced indenyl naphthyl compound obtained in step (2) with at least one acid to obtain a benzoindenoinden compound
- the compounds according to the invention described above in particular compounds which are substituted by reactive leaving groups, such as bromine, iodine, chlorine, boronic acid or boronic acid esters, can be used as monomers for producing corresponding oligomers, dendrimers or polymers.
- Suitable reactive leaving groups are, for example, sulfonic acid esters, e.g.
- Tosylate or triflate bromine, iodine, chlorine, boronic acids, boronic esters, amines, alkenyl or alkynyl groups with terminal CC double bond or CC triple bond, oxiranes, oxetanes, groups which undergo a cycloaddition, for example a 1, 3-dipolar cycloaddition, such as dienes or azides,
- the invention preferably comprises an oligomer, polymer or dendrimer comprising one or more compounds of the formula (I), wherein the bond (s) to the polymer, oligomer or dendrimer are located at any positions substituted in formula (I) by R 1 or R 2 could be.
- the compound is part of a side chain or a main chain of the oligomer or polymer.
- An oligomer in the context of this invention is understood as meaning a compound which is composed of at least three monomer units.
- a polymer in the context of the invention is understood as meaning a compound which is composed of at least ten monomer units.
- Dendrimers may be conjugated, partially conjugated or non-conjugated.
- the oligomers or polymers of the invention may be linear, branched or dendritic.
- the units of formula (I) may be directly linked together or may be linked together via a divalent group, for example via a substituted or unsubstituted alkylene group, via a heteroatom or via a divalent aromatic or heteroaromatic group.
- three or more units of formula (I) may be linked via a trivalent or higher valent group, for example via a trivalent or more valent aromatic or heteroaromatic group, to a branched or dendritic oligomer or polymer.
- repeat units of the formula (I) in oligomers, dendrimers and polymers have the same preferences as described above for compounds of the formula (I).
- the monomers according to the invention are homopolymerized or copolymerized with further monomers.
- Suitable and preferred comonomers are selected from the group consisting of fluorenes (eg EP 842208 or US Pat
- WO 2000/22026) spirobifluorenes (eg EP 707020, EP 894107 or WO 2006/061181), paraphenylenes (eg WO 1992/18552), carbazoles (e.g. WO 2004/070772 or WO 2004/113468), thiophenes (eg.
- EP 1028136 dihydrophenanthrenes (eg WO 2005/014689 or WO 2007/006383), cis- and trans-indenofluorenes (eg WO 2004/041901 or WO 2004/113412), ketones (eg WO 2005/040302), phenanthrenes (eg WO 2005/104264 or WO 2007/017066) or also several of these units.
- the polymers, oligomers and dendrimers usually also contain further units, for example emitting
- Vinyltriarylamines for example WO 2007/068325
- phosphorescent metal complexes for example WO 2006/003000
- charge transport units in particular those based on triarylamines.
- the polymers, oligomers and dendrimers according to the invention are generally prepared by polymerization of one or more types of monomer, of which at least one monomer in the polymer
- the invention preferably comprises a process for the preparation of the polymers, oligomers and dendrimers according to the invention, which is characterized in that the polymers, oligomers and dendrimers according to the invention are prepared by polymerization according to SUZUKI, polymerization according to YAMAMOTO, polymerization according to SILENCE, polymerization according to HARTWIG-BUCHWALD, polymerization according to NEGISHI or polymerization according to HIYAMA.
- Dendrimers according to the invention can be prepared according to the person skilled in the art
- formulations of the compounds according to the invention are required. These formulations may be, for example, solutions, dispersions or emulsions. It may be preferable to use mixtures of two or more solvents for this purpose.
- Suitable and preferred solvents are, for example, toluene, anisole, o-, m- or p-xylene, methyl benzoate, mesitylene, tetralin, veratrole, THF, methyl THF, THP, chlorobenzene, dioxane, phenoxytoluene, in particular 3-phenoxytoluene, (-) Fenchone, 1, 2,3,5-tetramethylbenzene, 1, 2,4,5-tetramethylbenzene,
- Tetraethylene glycol dimethyl ether 2-isopropylnaphthalene, pentylbenzene, Hexylbenzene, heptylbenzene, octylbenzene, 1, 1-bis (3,4-dimethylphenyl) ethane or mixtures of these solvents.
- the invention therefore further provides a formulation, in particular a solution, dispersion or emulsion containing at least one compound of the formula (I) or at least one polymer, oligomer or dendrimer comprising at least one unit of
- Formula (I) and at least one solvent preferably an organic solvent. How such solutions can be prepared is known to the person skilled in the art and is described in WO 2002/072714, for example.
- the compounds of the formula (I) according to the invention are suitable for use in electronic devices, in particular in organic electroluminescent devices (OLEDs). Depending on the substitution, the compounds are used in different functions and layers.
- OLEDs organic electroluminescent devices
- the electronic device is preferably selected from the group consisting of organic integrated circuits (OICs), organic field effect transistors (OFETs), organic thin film transistors (OTFTs), organic light emitting transistors (OLETs),
- OICs organic integrated circuits
- OFETs organic field effect transistors
- OTFTs organic thin film transistors
- OLETs organic light emitting transistors
- organic solar cells organic solar cells (OSCs), organic optical detectors, organic photoreceptors, organic field quench devices
- OLEDs organic laser diodes
- Another object of the invention is an electronic device containing at least one compound of formula (I).
- the electronic device is selected from those given above
- an organic electroluminescent device comprising anode, cathode and at least one emitting layer, characterized in that at least one Organic layer of the organic electroluminescent device contains at least one compound according to formula (I).
- the organic electroluminescent device may contain further layers. These are, for example, selected from one or more
- Electron blocking layers exciton blocking layers
- the sequence of layers of the organic electroluminescent device is preferably the following: anode hole injection layer hole transport layer emitting layer electron transport layer electron injection layer cathode.
- the subject matter of the invention preferably comprises an electronic device comprising an anode, a hole injection layer, a hole transport layer, an emitting layer, a
- the subject matter of the invention preferably comprises an electronic device comprising an emitting layer comprising the compound H1 and a compound of the formula I-3, and comprising an electron transport layer comprising the compound ETM1:
- the organic electroluminescent device according to the invention may comprise an emitting layer which has an emission maximum in the blue color range in a wavelength range between 420 nm and 490 nm.
- the organic electroluminescent device according to the invention may contain a plurality of emitting layers. Particularly preferably, these emission layers have a total of several in this case
- various emitting compounds are used which can fluoresce or phosphoresce and which emit blue or green or yellow or orange or red light.
- Particularly preferred are three-layer systems, ie systems with three emitting layers, wherein preferably at least one of these layers contains at least one compound according to formula (I) and wherein the three layers show blue, green and orange or red emission (for the basic structure see eg WO 2005/011013). It should be noted that for the production of white light instead of multiple colored emitting
- Emitter compounds may also be a single emitter used, which emits in a wide wavelength range.
- Compounds may also be present in the hole transport layer or in another layer.
- a compound according to formula (I) for use as emissive material (emitter compound).
- the compound of the invention is particularly suitable for use as a blue emitting emitter compound.
- the electronic device in question may contain a single emitting layer containing the compound of the invention, or it may contain two or more emitting layers.
- the further emitting layers may contain one or more compounds according to the invention or alternatively other compounds.
- the compound of the present invention is used as an emissive material in an emitting layer, it is preferably used in U.S.P.
- the proportion of the compound according to the invention in the mixture of the emitting layer in this case is preferably between 0.1 and 50.0% by volume, more preferably between 0.5 and 20.0% by volume, even more preferably between 1.0 and 10.0% by volume, and completely more preferably between 1.0 and 5.0% by volume.
- the proportion of the matrix material or the matrix materials is preferably between 50.0 and 99.9% by volume, more preferably between 80.0 and 99.5% by volume, even more preferably between 90.0 and 99.0% by volume, and very particularly preferably between 95.0 and 99.0% by volume.
- Preferred matrix materials for use in combination with the compounds according to the invention as emitter are selected from the classes of the oligoarylenes (for example 2,2 ', 7,7'-tetraphenylspirobifluorene according to EP 676461 or dinaphthylanthracene), in particular the oligoarylenes containing condensed aromatic groups, the oligoarylenevinylenes (eg DPVBi or spiro-DPVBi according to EP 676461), the polypodal metal complexes (eg according to WO 2004/081017), the hole-conducting
- the oligoarylenes for example 2,2 ', 7,7'-tetraphenylspirobifluorene according to EP 676461 or dinaphthylanthracene
- the oligoarylenes containing condensed aromatic groups eg DPVBi or spiro-DPVBi according to EP 676461
- ketones in particular ketones, phosphine oxides, sulfoxides, etc. (for example according to WO 2005/084081 and WO 2005/084082), the atropisomers (for example according to WO 2006/048268), the boronic acid derivatives (for example according to US Pat
- Particularly preferred matrix materials are selected from the classes of oligoarylenes containing naphthalene, anthracene, benzanthracene and / or pyrene or atropisomers of these compounds, the oligoarylenevinylenes, the ketones, the phosphine oxides and the sulfoxides.
- Very particularly preferred matrix materials are selected from the classes of oligoarylenes containing anthracene, benzanthracene, benzphenanthrene 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 matrix materials for use in combination with the compound of formula (I) in the emissive layer are shown in the following table.
- the compounds according to the invention can also be used in other layers, for example as hole transport materials in a hole injection or hole transport layer or electron blocking layer.
- the organic layer comprising the compound of the formula (I) then additionally contains one or more p-dopants.
- p-dopants according to the present invention are preferably those used organic electron acceptor compounds which can oxidize one or more of the other compounds of the mixture.
- p-dopants are those described in WO 2011/073149, EP 1968131, EP 2276085, EP 2213662, EP 1722602, EP 2045848, DE 102007031220, US 8044390, US 8057712, WO
- Particularly suitable as phosphorescent emitters are compounds which emit light, preferably in the visible range, with suitable excitation and also contain 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.
- Examples of the phosphorescent emitters described above can be found in applications WO 2000/70655, WO 2001/41512, WO 2002/02714, WO 2002/15645, EP 1191613, EP 1191612, EP 1191614, WO
- Preferred fluorescent emitters are in addition to the compounds of the invention selected from the class of arylamines.
- An arylamine or an aromatic amine in the context of this invention is understood as meaning a compound which contains three substituted or unsubstituted aromatic or heteroaromatic ring systems bonded directly to the nitrogen. At least one of these aromatic or heteroaromatic ring systems is preferably a fused ring system, more preferably at least 14 aromatic ring atoms.
- aromatic anthracene amines aromatic anthracenediamines
- aromatic pyrenamines aromatic pyrenediamines
- aromatic chrysenamines aromatic anthracene amines
- an aromatic anthracene amine is meant a compound in which a diarylamino group is bonded directly to an anthracene group, preferably in the 9-position.
- An aromatic anthracenediamine is understood to mean a compound in which two diarylamino groups are bonded directly to an anthracene group, preferably in the 9,10-position.
- Aromatic pyrenamines, pyrenediamines, chrysenamines and chrysenediamines are defined analogously thereto, the diarylamino groups being attached to the pyrene preferably in the 1-position or in the 1,6-position.
- Preferred matrix materials for use with fluorescent emitter compounds are listed above.
- Preferred matrix materials for phosphorescent emitters are aromatic ketones, aromatic phosphine oxides or aromatic sulfoxides or sulfones, e.g. B. according to WO 2004/013080, WO 2004/093207, WO 2006/005627 or WO 2010/006680, triarylamines, carbazole derivatives, z. B. CBP ( ⁇ , ⁇ -biscarbazolylbiphenyl) or in WO 2005/039246, US 2005/0069729, JP 2004/288381, EP 1205527 or WO 2008/086851 disclosed carbazole derivatives, indolocarbazole derivatives, for. B. according to WO 2007/063754 or WO 2008/056746, indenocarbazole derivatives, for. B. according to WO 2010/136109, WO 2011/000455 or WO 2013/041176,
- Azacarbazole derivatives e.g. B. according to EP 1617710, EP 1617711, EP 1731584, JP 2005/347160, bipolar matrix materials, for. B. according to
- Zinc complexes e.g. B. according to EP 652273 or WO 2009/062578, diazasilol or tetraazasilol derivatives, z. B. according to WO 2010/054729,
- Diazaphosphole derivatives e.g. B. according to WO 2010/054730, bridged carbazole derivatives, z. According to US 2009/0136779, WO 2010/050778, WO 2011/042107, WO 2011/088877 or WO 2012/143080,
- Triphenylene derivatives eg. B. according to WO 2012/048781, or lactams, z. B. according to WO 2011/116865 or WO 2011/137951.
- Suitable charge transport materials as used in the hole injection or hole transport layer or in the electron blocking layer or in the
- Compounds according to the invention include, for example, the compounds disclosed in Y. Shirota et al., Chem. Rev. 2007, 107 (4), 953-1010 or other materials used in these layers according to the prior art.
- materials for the electron transport layer it is possible to use all materials as used in the prior art as electron transport materials in the electron transport layer.
- aluminum complexes for example Alq3, are suitable.
- Zirconium complexes for example Zrq4, lithium complexes, for example Liq, benzimidazole derivatives, triazine derivatives, pyrimidine derivatives,
- Diazaphospholderivate and Phosphinoxidderivate are further suitable materials, as disclosed in JP 2000/053957, WO 2003/060956, WO 2004/028217, WO 2004/080975 and WO 2010/072300.
- Preferred as hole transport materials which can be used in a hole transport, hole injection or electron blocking layer in the electroluminescent device according to the invention,
- Hexaazatriphenylene derivatives for example according to WO 01/049806
- amine derivatives with condensed aromatics for example in accordance with US Pat. No. 5,061,569, which are described in US Pat
- WO 95/09147 disclosed amine derivatives, monobenzoindenofluoreneamines (for example according to WO 08/006449), dibenzoindenofluoreneamines (for example according to WO 07/140847), spirobifluorene amines (for example according to WO 2012/034627 or WO 2013 / 120577), fluorene amines (eg according to WO 2014/015937, WO 2014/015938 and WO 2014/015935), spiro-dibenzopyran amines (eg according to WO 2013/083216) and dihydroacridine derivatives (e.g. B. according to WO 2012/150001).
- the compounds according to the invention can also be used as hole transport materials.
- 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, As Ag or Al, which then usually combinations of metals, such as Ca / Ag, Mg / Ag or Ba / Ag are used.
- the cathode can preferably have a layer thickness between 50 and 150 nm. Particularly preferably, the layer thickness of the cathode is 100 nm. 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.
- Suitable examples of these are alkali metal or alkaline earth metal fluorides, but also the corresponding oxides or carbonates (eg LiF, L 12 O, BaF 2, MgO, NaF, CsF, CS 2 CO 3, etc.).
- lithium-quinolinate can be used for this purpose (LiQ) can be used.
- the layer thickness of this layer is preferably between 0.5 and 5 nm.
- the anode of the organic electroluminescent device high work function materials are preferred.
- the anode has a
- Metals with high redox potential suitable such as Ag, Pt or Au.
- metal / metal oxide electrodes eg.
- Al / Ni / NiOx, Al / PtOx may be preferred.
- at least one of the electrodes must be transparent or partially transparent to either irradiate the organic material (organic
- Preferred anode materials here are conductive mixed metal oxides. Particularly preferred are indium tin oxide (ITO) or indium zinc oxide (IZO). Preference is furthermore given to conductive, doped organic materials, in particular conductive doped polymers.
- the device is structured accordingly (depending on the application), contacted and finally sealed, since the life of the devices according to the invention can be shortened in the presence of water and / or air.
- Organic electroluminescent device characterized in that one or more layers are coated by a sublimation process.
- the materials are in vacuum sublimation at an initial pressure less than 10 "5 mbar, preferably less than
- Initial pressure is even lower, for example, less than 10 ⁇ 7 mbar.
- an organic electroluminescent device characterized in that one or more layers are coated with the OVPD (Organic Vapor Phase Deposition) method or with the aid of a carrier gas sublimation. The materials at a pressure between 10 "5 mbar and 1 bar are applied.
- OVPD Organic Vapor Phase Deposition
- a special case of this method is the OVJP (organic vapor jet printing) method, in which the materials are applied directly through a nozzle and thus structured (for example, BMS Arnold et al., Appl. Phys. Lett., 2008, 92, 053301).
- an organic electroluminescent device characterized in that one or more layers of solution, such. B. by spin coating, or with any printing process, such.
- any printing process such as screen printing, flexographic printing, Nozzle Printing or offset printing, but particularly preferably LITI (Light Induced Thermal Imaging, thermal transfer printing) or ink-jet printing (ink jet printing), are produced.
- LITI Light Induced Thermal Imaging, thermal transfer printing
- ink-jet printing ink jet printing
- the electronic devices comprising one or more compounds according to the invention can be used in displays, as light sources in illumination applications and as light sources in medical and / or cosmetic applications (eg light therapy).
- Tri (o-tolyl) phosphine (703 mg, 2.3 mmol, 3 mol%) and palladium (II) acetate (85 mg, 0.4 mmol, 0.5 mol%).
- the reaction mixture is heated at 95 ° C for 19 hours, then cooled to room temperature, and expanded with distilled water.
- Phase separation the aqueous phase is extracted several times with toluene.
- the combined organic phases are washed with distilled water, dried over magnesium sulfate and filtered through alumina.
- the organic phase is concentrated under reduced pressure.
- the crude residue obtained is passed through silica gel
- a / - (2,4-Difluorophenyl) -2,4-dimethylaniline (70.1 mg, 0.3 mmol).
- n-hexyllithium 144 pL, 355 pmol, 2.47 M in hexane
- the reaction mixture is then heated for three hours with stirring at 90 ° C to 110 ° C.
- distilled water is added to the reaction mixture and the phases are separated. After phase separation, the aqueous phase is extracted several times with toluene.
- the indicated amount of the corresponding compound of the formula (I) is weighed into a 100 ml measuring cylinder and made up to 100 ml with toluene. It is then checked by optical visual inspection that the solid is completely dissolved. A lot of the solution
- the reference solution is toluene, which is added to a second cuvette.
- Photoluminescence spectra were measured on the F-4500, Fluorescence Spectrophotometer, Hitachi.
- Compounds of formula (I) based on a benzoindenoindene base have emissions that are significantly shifted to longer wavelengths.
- the target compounds (5, 6, 7) have, in particular, emissions which lie in the wavelength range of the blue visible light. This is how connection 5 appears Emission maximum at 458 nm, compound 6 an emission maximum at 459 nm and compound 7 an emission maximum at 458 nm.
- the target compounds (5, 6, 7) comprise compounds that exhibit blue emission upon excitation and, accordingly, are for use as blue singlet emitters in electronic
- formulations of the compounds according to the invention are required in which the compounds according to the invention have a sufficient
- the target compounds (5, 6, 7) are in nonpolar solvents, such as e.g. Heptane or toluene, a high solubility, and are therefore suitable for processing from the liquid phase.
- nonpolar solvents such as e.g. Heptane or toluene, a high solubility
- the target compound 6 has a solubility of 36 g / L in toluene at room temperature and a solubility of 12 g / L in heptane.
- the target compound 6 at 98 ° C in heptane a
- Solubility of 100 g / L and the target compound 6 can be advantageously recrystallized from heptane.
- Compounds of the invention can be applied to the OVPD (Organic Vapor Phase Deposition) method or carrier gas sublimation.
- the compounds according to the invention are added under reduced pressure from the gas phase to a solid surface in order to apply one or more layers of the compounds according to the invention to the solid surface.
- a low sublimation temperature of the compounds according to the invention is advantageous.
- the target compounds (4, 5, 6, 7) have a low
- Target compound 6 has a sublimation temperature between 140 ° C and 160 ° C.
- inventive OLEDs and OLEDs according to the prior art is carried out according to a general method according to WO 04/058911, based on the conditions described here
- the substrates used are glass plates coated with structured ITO (indium tin oxide) of thickness 50 nm.
- the OLEDs have in principle the following layer structure: substrate / buffer (20 nm) / hole injection layer (HIL, comprising
- HIL1 major component
- HIL2 dopant, 3 vol%)
- 20 nm hole transport layer
- EML emission layer
- ETL electron transport layer
- ETL electron injection layer
- cathode is formed by a 100 nm thick aluminum layer.
- a 20 nm thick layer of Pedot P057 purchased from HC-Starck Baytron is applied by spin coating. All remaining materials are thermally evaporated in a vacuum chamber.
- Table 1 The structure of the EML and the ETL of the OLEDs and the materials used in this layer are shown in Table 1.
- HIL1 is a first material of the hole injection layer and HIL2 is a second material of the hole injection layer, HTL being the material of the hole transport layer, where ETM1 and LiQ are the materials of the electron transport layer, and wherein LiQ the material of
- Electron injection layer is.
- the emission layer always consists of at least one
- Matrix material (host, H) and an emitting dopant (dopant, D), the matrix material by cover evaporation in a certain
- volume fraction is added.
- An indication such as H1: D1 (95%: 5%) here means that the matrix material H1 is present in a volume fraction of 95% and the emitting compound D1 in a proportion of 5% in the layer.
- the electron transport layer may consist of a mixture of two materials.
- the OLEDs are characterized by default. For this purpose, the electroluminescence spectra are recorded, the external quantum efficiency (EQE, measured in percent) as a function of luminance, assuming a Lambertian radiation characteristic of current-voltage-luminance characteristics (lUL characteristics) calculated and finally determines the life of the components.
- EQE external quantum efficiency
- Electroluminescence spectra are recorded at a luminance of 1000 cd / m 2 and used to calculate the CIE 1931 x and y color coordinates.
- the specification EQE @ 1000 cd / m 2 designates the external one
- Quantum efficiency at an operating luminance of 1000 cd / m 2 Quantum efficiency at an operating luminance of 1000 cd / m 2 .
- the lifetime LD50 @ 50mA / cm 2 is the time that elapses until the
- compounds according to the invention are suitable as blue-fluorescent dopants.
- the dopant D1 is measured here.
- the examples E1 to E3 show, were for the inventive
- Dotand D1 as a fluorescent dopant achieves favorable values for external quantum efficiency, with blue emission and good lifetime (LD50).
- Table 1 Structure of the OLEDs
- E1 H1 (95%): D1 (5%) 20 nm
- ETM1 (50%): LiQ (50%) 30 nm
- E2 H1 (97%): D1 (3%) 20 nm
- ETM1 (50%): LiQ (50%) 30 nm
- E3 H1 (99%): D1 (1%) 20 nm
- ETM1 (50%): LiQ (50%) 30 nm
- HIL2 (p-dopant, commercial
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| CN109651392A (zh) * | 2018-12-31 | 2019-04-19 | 瑞声科技(南京)有限公司 | 一种热激活延迟荧光化合物及其应用 |
| KR20190056333A (ko) * | 2017-11-16 | 2019-05-24 | 주식회사 엘지화학 | 다환 화합물 및 이를 포함한 유기 발광 소자 |
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| KR20130084952A (ko) * | 2012-01-18 | 2013-07-26 | (주)씨에스엘쏠라 | 유기 발광 화합물 및 이를 포함하는 유기 발광 소자 |
| US20140027721A1 (en) * | 2012-07-25 | 2014-01-30 | Samsung Display Co., Ltd. | Condensed-cyclic compound and organic light-emitting device including the same |
| JP2014058475A (ja) * | 2012-09-18 | 2014-04-03 | Univ Of Tokyo | 炭素架橋フェニレンビニレン誘導体、及びこれを用いた色素増感太陽電池 |
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| KR20130084952A (ko) * | 2012-01-18 | 2013-07-26 | (주)씨에스엘쏠라 | 유기 발광 화합물 및 이를 포함하는 유기 발광 소자 |
| US20140027721A1 (en) * | 2012-07-25 | 2014-01-30 | Samsung Display Co., Ltd. | Condensed-cyclic compound and organic light-emitting device including the same |
| JP2014058475A (ja) * | 2012-09-18 | 2014-04-03 | Univ Of Tokyo | 炭素架橋フェニレンビニレン誘導体、及びこれを用いた色素増感太陽電池 |
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| KR20190056333A (ko) * | 2017-11-16 | 2019-05-24 | 주식회사 엘지화학 | 다환 화합물 및 이를 포함한 유기 발광 소자 |
| KR102186088B1 (ko) | 2017-11-16 | 2020-12-03 | 주식회사 엘지화학 | 다환 화합물 및 이를 포함한 유기 발광 소자 |
| CN109651392A (zh) * | 2018-12-31 | 2019-04-19 | 瑞声科技(南京)有限公司 | 一种热激活延迟荧光化合物及其应用 |
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