WO2022231164A1 - Nouveau composé et dispositif électroluminescent organique le comprenant - Google Patents

Nouveau composé et dispositif électroluminescent organique le comprenant Download PDF

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WO2022231164A1
WO2022231164A1 PCT/KR2022/005059 KR2022005059W WO2022231164A1 WO 2022231164 A1 WO2022231164 A1 WO 2022231164A1 KR 2022005059 W KR2022005059 W KR 2022005059W WO 2022231164 A1 WO2022231164 A1 WO 2022231164A1
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group
compound
layer
light emitting
formula
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Korean (ko)
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서상덕
김민준
김영석
김동희
오중석
이다정
이동훈
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주식회사 엘지화학
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Priority to CN202280014844.4A priority Critical patent/CN116888121A/zh
Publication of WO2022231164A1 publication Critical patent/WO2022231164A1/fr

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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
    • H10K85/656—Aromatic compounds comprising a hetero atom comprising two or more different heteroatoms per ring
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D491/00—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00
    • C07D491/02—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains two hetero rings
    • C07D491/04—Ortho-condensed systems
    • C07D491/044—Ortho-condensed systems with only one oxygen atom as ring hetero atom in the oxygen-containing ring
    • C07D491/048—Ortho-condensed systems with only one oxygen atom as ring hetero atom in the oxygen-containing ring the oxygen-containing ring being five-membered
    • 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
    • H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
    • H10K85/636—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine comprising heteroaromatic hydrocarbons as substituents on the nitrogen atom
    • 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
    • H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
    • H10K85/6574—Polycyclic condensed heteroaromatic hydrocarbons comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes
    • 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

Definitions

  • the present invention relates to a novel compound and an organic light emitting device including the same.
  • the organic light emitting phenomenon refers to a phenomenon in which electric energy is converted into light energy using an organic material.
  • the organic light emitting device using the organic light emitting phenomenon has a wide viewing angle, excellent contrast, fast response time, and excellent luminance, driving voltage, and response speed characteristics, and thus many studies are being conducted.
  • An organic light emitting device generally has a structure including an anode and a cathode and an organic material layer between the anode and the cathode.
  • the organic material layer is often made of a multi-layered structure composed of different materials in order to increase the efficiency and stability of the organic light emitting device, for example, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, it may be made of an electron injection layer, etc.
  • Patent Document 0001 Korean Patent Publication No. 10-2000-0051826
  • the present invention relates to a novel compound and an organic light emitting device comprising the same.
  • the present invention provides a compound represented by the following formula (1).
  • A is a benzene or naphthalene ring fused to an adjacent ring
  • L 1 to L 3 are each independently, a direct bond; Or a substituted or unsubstituted C 6-60 arylene,
  • Ar 1 and Ar 2 are each independently, substituted or unsubstituted C 6-60 aryl; Or substituted or unsubstituted C 2-60 heteroaryl containing any one or more heteroatoms selected from the group consisting of N, O and S,
  • Y is O, or S
  • X 1 to X 4 are each independently N or C(R 2 ), wherein at least one of X 1 to X 4 is N,
  • R 1 and R 2 are each independently hydrogen; heavy hydrogen; substituted or unsubstituted C 6-60 aryl; Or substituted or unsubstituted C 2-60 heteroaryl containing any one or more heteroatoms selected from the group consisting of N, O and S,
  • n is an integer from 1 to 5;
  • n is an integer from 1 to 7.
  • the present invention is a first electrode; a second electrode provided to face the first electrode; and at least one organic material layer provided between the first electrode and the second electrode, wherein at least one of the organic material layers includes the compound represented by Formula 1 above. do.
  • the compound represented by Chemical Formula 1 described above may be used as a material for the organic layer of the organic light emitting device, and may improve efficiency, low driving voltage and/or lifespan characteristics in the organic light emitting device.
  • the compound represented by the above formula (1) may be used as a material for hole injection, hole transport, hole injection and transport, light emission, electron transport, or electron injection.
  • FIG. 1 shows an example of an organic light emitting device including a substrate 1 , an anode 2 , a light emitting layer 3 , and a cathode 4 .
  • FIG. 2 is a substrate (1), an anode (2), a hole injection layer (5), a hole transport layer (6), an electron blocking layer (7), a light emitting layer (3), an electron injection and transport layer (8) and a cathode (4)
  • substituted or unsubstituted refers to deuterium; halogen group; nitrile group; nitro group; hydroxyl group; carbonyl group; ester group; imid; amino group; phosphine oxide group; alkoxy group; aryloxy group; alkyl thiooxy group; arylthioxy group; an alkyl sulfoxy group; arylsulfoxy group; silyl group; boron group; an alkyl group; cycloalkyl group; alkenyl group; aryl group; aralkyl group; aralkenyl group; an alkylaryl group; an alkylamine group; an aralkylamine group; heteroarylamine group; arylamine group; an aryl phosphine group; or N, O, and S atom means that it is substituted or unsubstituted with one or more substituents selected from the group consisting of a heterocyclic
  • a substituent in which two or more substituents are connected may be a biphenyl group. That is, the biphenyl group may be an aryl group, and may be interpreted as a substituent in which two phenyl groups are connected.
  • the number of carbon atoms of the carbonyl group is not particularly limited, but it is preferably from 1 to 40 carbon atoms. Specifically, it may be a compound having the following structure, but is not limited thereto.
  • the oxygen of the ester group may be substituted with a linear, branched or cyclic alkyl group having 1 to 25 carbon atoms or an aryl group having 6 to 25 carbon atoms.
  • a linear, branched or cyclic alkyl group having 1 to 25 carbon atoms or an aryl group having 6 to 25 carbon atoms may be a compound of the following structural formula, but is not limited thereto.
  • the number of carbon atoms of the imide group is not particularly limited, but it is preferably from 1 to 25 carbon atoms. Specifically, it may be a compound having the following structure, but is not limited thereto.
  • the silyl group specifically includes a trimethylsilyl group, a triethylsilyl group, a t-butyldimethylsilyl group, a vinyldimethylsilyl group, a propyldimethylsilyl group, a triphenylsilyl group, a diphenylsilyl group, a phenylsilyl group, and the like.
  • the present invention is not limited thereto.
  • the boron group specifically includes a trimethylboron group, a triethylboron group, a t-butyldimethylboron group, a triphenylboron group, a phenylboron group, and the like, but is not limited thereto.
  • examples of the halogen group include fluorine, chlorine, bromine or iodine.
  • the alkyl group may be linear or branched, and the number of carbon atoms is not particularly limited, but is preferably 1 to 40. According to an exemplary embodiment, the number of carbon atoms in the alkyl group is 1 to 20. According to another exemplary embodiment, the alkyl group has 1 to 10 carbon atoms. According to another exemplary embodiment, the alkyl group has 1 to 6 carbon atoms.
  • alkyl group examples include methyl, ethyl, propyl, n-propyl, isopropyl, butyl, n-butyl, isobutyl, tert-butyl, sec-butyl, 1-methyl-butyl, 1-ethyl-butyl, pentyl, n -pentyl, isopentyl, neopentyl, tert-pentyl, hexyl, n-hexyl, 1-methylpentyl, 2-methylpentyl, 4-methyl-2-pentyl, 3,3-dimethylbutyl, 2-ethylbutyl, heptyl , n-heptyl, 1-methylhexyl, cyclopentylmethyl, cyclohexylmethyl, octyl, n-octyl, tert-octyl, 1-methylheptyl, 2-ethylhexyl
  • the alkenyl group may be linear or branched, and the number of carbon atoms is not particularly limited, but is preferably 2 to 40. According to an exemplary embodiment, the carbon number of the alkenyl group is 2 to 20. According to another exemplary embodiment, the carbon number of the alkenyl group is 2 to 10. According to another exemplary embodiment, the alkenyl group has 2 to 6 carbon atoms.
  • Specific examples include vinyl, 1-propenyl, isopropenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 3-methyl-1- Butenyl, 1,3-butadienyl, allyl, 1-phenylvinyl-1-yl, 2-phenylvinyl-1-yl, 2,2-diphenylvinyl-1-yl, 2-phenyl-2-( Naphthyl-1-yl)vinyl-1-yl, 2,2-bis(diphenyl-1-yl)vinyl-1-yl, stilbenyl group, styrenyl group, and the like, but are not limited thereto.
  • the cycloalkyl group is not particularly limited, but preferably has 3 to 60 carbon atoms, and according to an exemplary embodiment, the cycloalkyl group has 3 to 30 carbon atoms. According to another exemplary embodiment, the carbon number of the cycloalkyl group is 3 to 20. According to another exemplary embodiment, the cycloalkyl group has 3 to 6 carbon atoms.
  • the aryl group is not particularly limited, but preferably has 6 to 60 carbon atoms, and may be a monocyclic aryl group or a polycyclic aryl group. According to an exemplary embodiment, the carbon number of the aryl group is 6 to 30. According to an exemplary embodiment, the carbon number of the aryl group is 6 to 20.
  • the aryl group may be a monocyclic aryl group, such as a phenyl group, a biphenyl group, or a terphenyl group, but is not limited thereto.
  • the polycyclic aryl group may be a naphthyl group, an anthracenyl group, a phenanthryl group, a pyrenyl group, a perylenyl group, a chrysenyl group, a fluorenyl group, and the like, but is not limited thereto.
  • the fluorenyl group may be substituted, and two substituents may be bonded to each other to form a spiro structure.
  • the fluorenyl group is substituted, etc. can be
  • the present invention is not limited thereto.
  • the heterocyclic group is a heterocyclic group including at least one of O, N, Si and S as a heterogeneous element, and the number of carbon atoms is not particularly limited, but it is preferably from 2 to 60 carbon atoms.
  • heterocyclic group examples include a thiophene group, a furan group, a pyrrole group, an imidazole group, a thiazole group, an oxazole group, an oxadiazole group, a triazole group, a pyridyl group, a bipyridyl group, a pyrimidyl group, a triazine group, an acridyl group , pyridazine group, pyrazinyl group, quinolinyl group, quinazoline group, quinoxalinyl group, phthalazinyl group, pyrido pyrimidinyl group, pyrido pyrazinyl group, pyrazino pyrazinyl group, isoquinoline group, indole group , carbazole group, benzoxazole group, benzoimidazole group, benzothiazole group, benzocarbazole group, benzothioph
  • the aryl group in the aralkyl group, the aralkenyl group, the alkylaryl group, and the arylamine group is the same as the example of the aryl group described above.
  • the alkyl group among the aralkyl group, the alkylaryl group, and the alkylamine group is the same as the example of the above-described alkyl group.
  • the description of the heterocyclic group described above for heteroaryl among heteroarylamines may be applied.
  • the alkenyl group among the aralkenyl groups is the same as the examples of the above-described alkenyl groups.
  • the description of the above-described aryl group may be applied except that arylene is a divalent group.
  • the description of the above-described heterocyclic group may be applied, except that heteroarylene is a divalent group.
  • the hydrocarbon ring is not a monovalent group, and the description of the above-described aryl group or cycloalkyl group may be applied, except that it is formed by combining two substituents.
  • the heterocyclic group is not a monovalent group, and the description of the above-described heterocyclic group may be applied, except that it is formed by combining two substituents.
  • the present invention provides a compound represented by the above formula (1).
  • Chemical Formula 1 is represented by any one selected from the group consisting of Chemical Formulas 1-1 to 1-4.
  • L 1 to L 3 , Ar 1 , Ar 2 , Y, and X 1 to X 4 are as defined above.
  • L 1 to L 3 are each independently a direct bond, phenylene, or biphenyldiyl.
  • Ar 1 and Ar 2 are each independently phenyl, biphenylyl, naphthyl, dibenzofuranyl, or dibenzothiophenyl.
  • X 1 to X 4 are each independently N or C(R 2 ), but any one of X 1 to X 4 is N.
  • each R 1 is independently hydrogen, or deuterium
  • each R 2 is independently hydrogen, deuterium, or phenyl.
  • the present invention provides a method for preparing a compound represented by Formula 1, such as Scheme 1-1 and Scheme 1-2.
  • the present invention provides an organic light emitting device including the compound represented by the formula (1).
  • the present invention provides a first electrode; a second electrode provided to face the first electrode; and at least one organic material layer provided between the first electrode and the second electrode, wherein at least one of the organic material layers includes the compound represented by Formula 1 above. do.
  • the organic material layer of the organic light emitting device of the present invention may have a single-layer structure, but may have a multi-layer structure in which two or more organic material layers are stacked.
  • the organic light emitting device of the present invention may have a structure including a hole injection layer, a hole transport layer, an electron blocking layer, a light emitting layer, an electron transport layer, an electron injection layer, etc. as an organic layer.
  • the structure of the organic light emitting device is not limited thereto and may include a smaller number of organic layers.
  • the organic material layer may include a hole transport layer, a hole injection layer, or a layer that transports and injects holes at the same time, and the hole transport layer, the hole injection layer, or a layer that simultaneously transports and injects holes is represented by Formula 1 It may include a compound represented by.
  • the organic material layer may include an electron blocking layer, and includes an electron blocking layer between the anode and the light emitting layer.
  • the electron blocking layer is included in contact with the anode side of the light emitting layer.
  • the electron blocking layer serves to improve the efficiency of the organic light emitting device by suppressing electrons injected from the cathode from being transferred to the anode without recombination in the light emitting layer.
  • the electron blocking layer may include a compound represented by Formula 1 above.
  • the organic material layer may include an emission layer, and the emission layer may include a compound represented by Formula 1 above.
  • the compound according to the present invention can be used as a host for the light emitting layer.
  • the organic material layer may include an electron transport layer, an electron injection layer, or an electron injection and transport layer, the electron transport layer, the electron injection layer, or the electron injection and transport layer may include a compound represented by the formula (1).
  • the organic material layer may include an emission layer or an electron blocking layer, and the emission layer or the electron blocking layer may include the compound represented by Formula 1 above.
  • the organic light emitting device according to the present invention may be a normal type organic light emitting device in which an anode, one or more organic material layers, and a cathode are sequentially stacked on a substrate.
  • the organic light emitting device according to the present invention may be an inverted type organic light emitting device in which a cathode, one or more organic material layers, and an anode are sequentially stacked on a substrate.
  • FIGS. 1 and 2 the structure of the organic light emitting diode according to an embodiment of the present invention is illustrated in FIGS. 1 and 2 .
  • FIG. 1 shows an example of an organic light emitting device including a substrate 1 , an anode 2 , a light emitting layer 3 , and a cathode 4 .
  • the compound represented by Formula 1 may be included in the light emitting layer.
  • the compound represented by Formula 1 may be included in the light emitting layer or the electron blocking layer.
  • the organic light emitting device according to the present invention may be manufactured using materials and methods known in the art, except that at least one layer of the organic material layer includes the compound represented by Formula 1 above. Also, when the organic light emitting device includes a plurality of organic material layers, the organic material layers may be formed of the same material or different materials.
  • the organic light emitting device may be manufactured by sequentially stacking a first electrode, an organic material layer, and a second electrode on a substrate.
  • a PVD (physical vapor deposition) method such as sputtering or e-beam evaporation
  • a metal or conductive metal oxide or an alloy thereof is deposited on a substrate to form an anode.
  • an organic material layer including a hole injection layer, a hole transport layer, a light emitting layer and an electron transport layer thereon it can be prepared by depositing a material that can be used as a cathode thereon.
  • an organic light emitting device may be manufactured by sequentially depositing a cathode material, an organic material layer, and an anode material on a substrate.
  • the compound represented by Formula 1 may be formed as an organic material layer by a solution coating method as well as a vacuum deposition method when manufacturing an organic light emitting device.
  • the solution coating method refers to spin coating, dip coating, doctor blading, inkjet printing, screen printing, spraying, roll coating, and the like, but is not limited thereto.
  • an organic light emitting device may be manufactured by sequentially depositing an organic material layer and an anode material from a cathode material on a substrate (WO 2003/012890).
  • the manufacturing method is not limited thereto.
  • the first electrode is an anode
  • the second electrode is a cathode
  • the first electrode is a cathode and the second electrode is an anode
  • anode material a material having a large work function is generally preferred so that holes can be smoothly injected into the organic material layer.
  • the anode material include metals such as vanadium, chromium, copper, zinc, gold, or alloys thereof; metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO), and indium zinc oxide (IZO); combinations of metals and oxides such as ZnO:Al or SnO 2 :Sb; conductive polymers such as poly(3-methylthiophene), poly[3,4-(ethylene-1,2-dioxy)thiophene](PEDOT), polypyrrole, and polyaniline, but are not limited thereto.
  • the cathode material is preferably a material having a small work function to facilitate electron injection into the organic material layer.
  • the anode material include metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin and lead, or alloys thereof; and a multi-layered material such as LiF/Al or LiO 2 /Al, but is not limited thereto.
  • the hole injection layer is a layer for injecting holes from the electrode, and as a hole injection material, it has the ability to transport holes, so it has a hole injection effect at the anode, an excellent hole injection effect on the light emitting layer or the light emitting material, and is produced in the light emitting layer
  • a compound which prevents the movement of excitons to the electron injection layer or the electron injection material and is excellent in the ability to form a thin film is preferred. It is preferable that the highest occupied molecular orbital (HOMO) of the hole injection material is between the work function of the positive electrode material and the HOMO of the surrounding organic material layer.
  • HOMO highest occupied molecular orbital
  • the hole injection material examples include metal porphyrin, oligothiophene, arylamine-based organic material, hexanitrile hexaazatriphenylene-based organic material, quinacridone-based organic material, and perylene-based organic material. of organic substances, anthraquinones, polyaniline and polythiophene-based conductive polymers, and the like, but are not limited thereto.
  • the hole transport layer is a layer that receives holes from the hole injection layer and transports them to the light emitting layer.
  • the electron blocking layer is formed on the hole transport layer, preferably provided in contact with the light emitting layer, to control hole mobility and prevent excessive movement of electrons to increase the probability of hole-electron coupling by increasing the efficiency of the organic light emitting device It means a layer that plays a role in improving
  • the electron blocking layer includes an electron blocking material, and as an example of the electron blocking material, a compound represented by Formula 1 may be used, and an arylamine-based organic material may be additionally used, but is not limited thereto.
  • the light emitting material is a material capable of emitting light in the visible ray region by transporting and combining holes and electrons from the hole transport layer and the electron transport layer, respectively, and a material having good quantum efficiency for fluorescence or phosphorescence is preferable.
  • Specific examples include 8-hydroxy-quinoline aluminum complex (Alq 3 ); carbazole-based compounds; dimerized styryl compounds; BAlq; 10-hydroxybenzo quinoline-metal compounds; compounds of the benzoxazole, benzthiazole and benzimidazole series; Poly(p-phenylenevinylene) (PPV)-based polymers; spiro compounds; polyfluorene, rubrene, and the like, but is not limited thereto.
  • the emission layer may include a host material and a dopant material.
  • the host material includes a condensed aromatic ring derivative or a heterocyclic compound containing compound.
  • condensed aromatic ring derivatives include anthracene derivatives, pyrene derivatives, naphthalene derivatives, pentacene derivatives, phenanthrene compounds, fluoranthene compounds, etc.
  • heterocyclic-containing compounds include carbazole derivatives, dibenzofuran derivatives, ladder type Furan compounds, pyrimidine derivatives, and the like, but are not limited thereto.
  • the dopant material examples include an aromatic amine derivative, a strylamine compound, a boron complex, a fluoranthene compound, and a metal complex.
  • the aromatic amine derivative is a condensed aromatic ring derivative having a substituted or unsubstituted arylamino group, and includes pyrene, anthracene, chrysene, and periflanthene having an arylamino group.
  • styrylamine compound a substituted or unsubstituted It is a compound in which at least one arylvinyl group is substituted in the arylamine, and one or two or more substituents selected from the group consisting of an aryl group, a silyl group, an alkyl group, a cycloalkyl group and an arylamino group are substituted or unsubstituted.
  • substituents selected from the group consisting of an aryl group, a silyl group, an alkyl group, a cycloalkyl group and an arylamino group are substituted or unsubstituted.
  • the metal complex includes an iridium complex, a platinum complex, and the like, but is not limited thereto.
  • the electron transport layer is a layer that receives electrons from the electron injection layer and transports electrons to the light emitting layer. do. Specific examples include Al complex of 8-hydroxyquinoline; complexes containing Alq 3 ; organic radical compounds; hydroxyflavone-metal complexes, and the like, but are not limited thereto.
  • the electron transport layer may be used with any desired cathode material as used in accordance with the prior art.
  • suitable cathode materials are conventional materials having a low work function and followed by a layer of aluminum or silver. Specifically cesium, barium, calcium, ytterbium and samarium, followed in each case by an aluminum layer or a silver layer.
  • the electron injection layer is a layer that injects electrons from the electrode, has the ability to transport electrons, has an electron injection effect from the cathode, an excellent electron injection effect on the light emitting layer or the light emitting material, and hole injection of excitons generated in the light emitting layer.
  • a compound which prevents movement to a layer and is excellent in the ability to form a thin film is preferable.
  • fluorenone anthraquinodimethane, diphenoquinone, thiopyran dioxide, oxazole, oxadiazole, triazole, imidazole, perylenetetracarboxylic acid, preorenylidene methane, anthrone, etc., derivatives thereof, metals complex compounds and nitrogen-containing 5-membered ring derivatives, but are not limited thereto.
  • the metal complex compound examples include 8-hydroxyquinolinato lithium, bis(8-hydroxyquinolinato)zinc, bis(8-hydroxyquinolinato)copper, bis(8-hydroxyquinolinato)manganese, Tris(8-hydroxyquinolinato)aluminum, tris(2-methyl-8-hydroxyquinolinato)aluminum, tris(8-hydroxyquinolinato)gallium, bis(10-hydroxybenzo[h] Quinolinato) beryllium, bis (10-hydroxybenzo [h] quinolinato) zinc, bis (2-methyl-8-quinolinato) chlorogallium, bis (2-methyl-8-quinolinato) ( o-crezolato)gallium, bis(2-methyl-8-quinolinato)(1-naphtolato)aluminum, bis(2-methyl-8-quinolinato)(2-naphtolato)gallium, etc.
  • the present invention is not limited thereto.
  • the organic light emitting device according to the present invention may be a bottom emission device, a top emission device, or a double-sided light emitting device, and in particular, a bottom light emitting device requiring relatively high luminous efficiency.
  • the compound according to the present invention may be included in an organic solar cell or an organic transistor in addition to the organic light emitting device.
  • benzofuro[2,3-b]pyridin-8-ylboronic acid (15.0 g, 70.4 mmol) and 2-bromo-4-chlorobenzaldehyde (17.0 g, 77.5 mmol) were added to tetrahydrofuran (THF, 300 ml) and stirred. and reflux. Thereafter, potassium carbonate (38.9 g, 281.7 mmol) was dissolved in water (117 ml), and after sufficient stirring, tetrakis(triphenylphosphine)palladium(0) (2.4 g, 2.1 mmol) was added.
  • the concentrated reaction solution was dissolved in methylene chloride (120 ml), and methanesulfornic acid (6.2 g, 63.7 mmol) was slowly added thereto, followed by stirring at room temperature for 12 hours. After completion of the reaction, the resulting solid was filtered, washed with distilled water (70 ml) and methanol (70 ml), and dried to prepare an intermediate A (15.0 g, yield 76%).
  • Compound 2 was prepared in the same manner as in Example 1, except that Intermediate B was used instead of Intermediate A and Intermediate b was used instead of Intermediate a.
  • Compound 4 was prepared in the same manner as in Example 1, except that Intermediate D was used instead of Intermediate A and Intermediate d was used instead of Intermediate a.
  • Compound 5 was prepared in the same manner as in Example 1, except that Intermediate E was used instead of Intermediate A and Intermediate e was used instead of Intermediate a.
  • Compound 6 was prepared in the same manner as in Example 1, except that Intermediate F was used instead of Intermediate A and Intermediate f was used instead of Intermediate a.
  • a glass substrate coated with a thin film of ITO (Indium Tin Oxide) to a thickness of 1,400 ⁇ was placed in distilled water dissolved in detergent and washed with ultrasonic waves.
  • the detergent DeconTM CON705 of Fischer Co. was used, and as distilled water, distilled water that was secondarily filtered with a 0.22 ⁇ m sterilizing filter manufactured by Millipore Co. was used.
  • ultrasonic cleaning was performed for 10 minutes by repeating twice with distilled water.
  • ultrasonic washing was performed for 10 minutes each with a solvent of isopropyl alcohol, acetone, and methanol, and then transported to a plasma cleaner after drying.
  • the substrate was transported to a vacuum evaporator.
  • the following HI-A and LG-101 were sequentially thermally vacuum deposited to a thickness of 800 ⁇ and 50 ⁇ , respectively, to form a hole injection layer.
  • HT-A as a hole transport layer was vacuum deposited to a thickness of 800 ⁇
  • EB-A as an electron blocking layer was thermally vacuum deposited to a thickness of 600 ⁇ .
  • a mixture of nRH-A as a host for the emission layer and Compound 1 prepared above in a weight ratio of 1:1 was applied, and RD-A was applied as a dopant, and the host and dopant were vacuum deposited to a thickness of 400 ⁇ in a weight ratio of 98:2.
  • the following ET-A and Liq were thermally vacuum-deposited at a ratio of 1:1 to a thickness of 360 ⁇ , followed by vacuum deposition of Liq to a thickness of 5 ⁇ .
  • magnesium and silver were sequentially deposited at a ratio of 10:1 to a thickness of 220 ⁇ and aluminum to a thickness of 1000 ⁇ to form a cathode, thereby manufacturing an organic light emitting diode.
  • An organic light emitting diode was manufactured in the same manner as in Experimental Example 1-1, except that the compound shown in Table 1 was used instead of Compound 1.
  • a glass substrate coated with ITO (Indium Tin Oxide) to a thickness of 1,400 ⁇ was placed in distilled water dissolved in detergent and washed with ultrasonic waves.
  • DeconTM CON705 product of Fischer Co. was used as the detergent, and distilled water that was secondarily filtered with a 0.22 ⁇ m sterilizing filter manufactured by Millipore Co. was used as distilled water.
  • ultrasonic cleaning was performed for 10 minutes by repeating twice with distilled water.
  • ultrasonic washing was performed for 10 minutes each with a solvent of isopropyl alcohol, acetone, and methanol, dried, and then transported to a plasma cleaner.
  • the substrate was transported to a vacuum evaporator.
  • the HI-A and LG-101 were sequentially thermally vacuum deposited to a thickness of 800 ⁇ and 50 ⁇ , respectively, on the prepared ITO transparent electrode to form a hole injection layer. Thereafter, the HT-A was vacuum deposited to a thickness of 800 ⁇ as a hole transport layer, and then the compound 1 was thermally vacuum deposited to a thickness of 600 ⁇ as an electron blocking layer.
  • the following RH-A as the light emitting layer host and RD-A as the dopant were applied, and the host and the dopant were vacuum-deposited to a thickness of 400 ⁇ in a weight ratio of 98:2.
  • ET-A and Liq were thermally vacuum-deposited at a ratio of 1:1 to a thickness of 360 ⁇ , followed by vacuum deposition of Liq to a thickness of 5 ⁇ .
  • magnesium and silver were sequentially deposited at a ratio of 10:1 to a thickness of 220 ⁇ and aluminum to a thickness of 1000 ⁇ to form a cathode, thereby manufacturing an organic light emitting diode.
  • Substrate 2 Anode

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

La présente invention concerne un nouveau composé et un dispositif électroluminescent organique le comprenant.
PCT/KR2022/005059 2021-04-30 2022-04-07 Nouveau composé et dispositif électroluminescent organique le comprenant WO2022231164A1 (fr)

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KR20140013614A (ko) * 2012-07-25 2014-02-05 삼성디스플레이 주식회사 헤테로고리 화합물 및 이를 포함하는 유기 발광 소자
KR20190052088A (ko) * 2016-10-25 2019-05-15 코니카 미놀타 가부시키가이샤 유기 일렉트로루미네센스 소자 및 유기 일렉트로루미네센스용 재료
KR20190140586A (ko) * 2018-06-12 2019-12-20 덕산네오룩스 주식회사 유기전기 소자용 화합물, 이를 이용한 유기전기소자 및 그 전자 장치
KR20200078088A (ko) * 2018-12-21 2020-07-01 엘지디스플레이 주식회사 유기 발광 소자
KR20200131681A (ko) * 2019-05-14 2020-11-24 덕산네오룩스 주식회사 유기전기 소자용 화합물을 포함하는 유기전기소자 및 그 전자 장치

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100430549B1 (ko) 1999-01-27 2004-05-10 주식회사 엘지화학 신규한 착물 및 그의 제조 방법과 이를 이용한 유기 발광 소자 및 그의 제조 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140013614A (ko) * 2012-07-25 2014-02-05 삼성디스플레이 주식회사 헤테로고리 화합물 및 이를 포함하는 유기 발광 소자
KR20190052088A (ko) * 2016-10-25 2019-05-15 코니카 미놀타 가부시키가이샤 유기 일렉트로루미네센스 소자 및 유기 일렉트로루미네센스용 재료
KR20190140586A (ko) * 2018-06-12 2019-12-20 덕산네오룩스 주식회사 유기전기 소자용 화합물, 이를 이용한 유기전기소자 및 그 전자 장치
KR20200078088A (ko) * 2018-12-21 2020-07-01 엘지디스플레이 주식회사 유기 발광 소자
KR20200131681A (ko) * 2019-05-14 2020-11-24 덕산네오룩스 주식회사 유기전기 소자용 화합물을 포함하는 유기전기소자 및 그 전자 장치

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