WO2022139179A1 - 헤테로 고리 화합물, 이를 포함하는 유기전계발광소자, 및 유기물층용 조성물 - Google Patents
헤테로 고리 화합물, 이를 포함하는 유기전계발광소자, 및 유기물층용 조성물 Download PDFInfo
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- WO2022139179A1 WO2022139179A1 PCT/KR2021/016706 KR2021016706W WO2022139179A1 WO 2022139179 A1 WO2022139179 A1 WO 2022139179A1 KR 2021016706 W KR2021016706 W KR 2021016706W WO 2022139179 A1 WO2022139179 A1 WO 2022139179A1
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
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Definitions
- the present invention relates to a heterocyclic compound, an organic electroluminescent device comprising the same, and a composition for an organic material layer.
- OLEDs Organic light emitting diodes
- the organic light emitting device is a device that converts electrical energy into light, and the performance of the organic light emitting device is greatly affected by an organic material positioned between electrodes.
- the organic light emitting device has a structure in which an organic thin film is disposed between two electrodes. When a voltage is applied to the organic light emitting device having such a structure, electrons and holes injected from the two electrodes combine in the organic thin film to form a pair, and then disappear and emit light.
- the organic thin film may be composed of a single layer or multiple layers, if necessary.
- the material of the organic thin film may have a light emitting function if necessary.
- a compound capable of forming the light emitting layer by itself may be used, or a compound capable of serving as a host or dopant of the host-dopant light emitting layer may be used.
- a compound capable of performing the roles of hole injection, hole transport, electron blocking, hole blocking, electron transport, electron injection, electron generating layer, etc. may be used as a material of the organic thin film.
- An object of the present invention is to provide a heterocyclic compound capable of imparting a low driving voltage, excellent luminous efficiency, and excellent lifespan characteristics to an organic light emitting device.
- an object of the present invention is to provide an organic light emitting device including the heterocyclic compound.
- Another object of the present invention is to provide a composition for an organic material layer comprising the heterocyclic compound.
- the present invention is a first invention.
- X is O, or S
- Ar1, Ar2, and Ar3 are the same as or different from each other and each independently represent a substituted or unsubstituted C6 to C60 aryl group or a substituted or unsubstituted C2 to C60 heteroaryl group,
- R1 to R8 are the same as or different from each other and each independently represent hydrogen; heavy hydrogen; halogen; cyano group; a substituted or unsubstituted C1 to C60 alkyl group; a substituted or unsubstituted C2 to C60 alkenyl group; a substituted or unsubstituted C2 to C60 alkynyl group; a substituted or unsubstituted C1 to C60 alkoxy group; a substituted or unsubstituted C3 to C60 cycloalkyl group; a substituted or unsubstituted C2 to C60 heterocycloalkyl group; a substituted or unsubstituted C6 to C60 aryl group; a substituted or unsubstituted C2 to C60 heteroaryl group; or -NR21R22, wherein R21 and R22 are the same as or different from each other and are each independently a substituted or unsubstituted C1 to C10 al
- L1 to L4 are the same as or different from each other and are each independently a direct bond, a substituted or unsubstituted C6 to C60 arylene group or a substituted or unsubstituted C2 to C60 heteroarylene group,
- n is an integer of 1 to 3, and when m is 2 or more, each Ar1 is the same as or different from each other,
- n, o, p, and q are the same as or different from each other and each independently an integer from 0 to 3, and when each of n, o, p, and q is 2 or more, each of L1, L2, L3 and L4 is each other same or different
- organic light emitting device comprising a; at least one organic material layer provided between the first electrode and the second electrode,
- the organic material layer provides an organic light emitting device including the heterocyclic compound represented by Formula 1 above.
- the heterocyclic compound of the present invention and the composition for an organic layer including the same can be usefully used as an organic material layer of an organic light emitting device.
- it is used as a material for a hole transport layer and/or an electron blocking layer, and provides a remarkable effect of lowering the driving voltage of the organic light emitting device, improving luminous efficiency, and improving lifespan characteristics.
- the heterocyclic compound of the present invention provides excellent thermal stability.
- the organic light emitting device of the present invention includes the heterocyclic compound, thereby providing excellent driving voltage, luminous efficiency and lifespan characteristics.
- 1 to 3 are views schematically showing a stacked structure of an organic light emitting device according to an embodiment of the present invention, respectively.
- substitution means that a hydrogen atom bonded to a carbon atom of the compound is replaced with another substituent, and the position to be substituted is not limited as long as the position at which the hydrogen atom is substituted, that is, the position where the substituent is substitutable, is not limited. , When two or more substituents are substituted, two or more substituents may be the same as or different from each other.
- the alkyl group includes a straight or branched chain having 1 to 60 carbon atoms, and may be further substituted by other substituents.
- the number of carbon atoms in the alkyl group may be 1 to 60, specifically 1 to 40, more specifically, 1 to 20.
- Specific examples include methyl group, ethyl group, propyl group, n-propyl group, isopropyl group, butyl group, n-butyl group, isobutyl group, tert-butyl group, sec-butyl group, 1-methyl-butyl group, 1- Ethyl-butyl group, pentyl group, n-pentyl group, isopentyl group, neopentyl group, tert-pentyl group, hexyl group, n-hexyl group, 1-methylpentyl group, 2-methylpentyl group, 4-methyl- 2-pentyl group, 3,3-dimethylbutyl group, 2-ethylbutyl group, heptyl group, n-heptyl group, 1-methylhexyl group, cyclopentylmethyl group, cyclohexylmethyl group, octyl group, n-octyl group,
- the alkenyl group includes a straight or branched chain having 2 to 60 carbon atoms, and may be further substituted by other substituents.
- the carbon number of the alkenyl group may be 2 to 60, specifically 2 to 40, more specifically, 2 to 20.
- Specific examples include a vinyl group, 1-propenyl group, isopropenyl group, 1-butenyl group, 2-butenyl group, 3-butenyl group, 1-pentenyl group, 2-pentenyl group, 3-pentenyl group, 3-methyl-1 -Butenyl group, 1,3-butadienyl group, allyl group, 1-phenylvinyl-1-yl group, 2-phenylvinyl-1-yl group, 2,2-diphenylvinyl-1-yl group, 2-phenyl-2 -(naphthyl-1-yl)vinyl-1-yl group, 2,2-bis(diphenyl-1-yl)vinyl-1-yl group, stilbenyl group, styrenyl group, etc., but are not limited thereto.
- the alkynyl group includes a straight or branched chain having 2 to 60 carbon atoms, and may be further substituted by other substituents.
- the carbon number of the alkynyl group may be 2 to 60, specifically 2 to 40, more specifically, 2 to 20.
- the cycloalkyl group includes a monocyclic or polycyclic ring having 3 to 60 carbon atoms, and may be further substituted by other substituents.
- polycyclic means a group in which a cycloalkyl group is directly connected to another ring group or condensed.
- the other ring group may be a cycloalkyl group, but may be a different type of ring group, for example, a heterocycloalkyl group, an aryl group, a heteroaryl group, or the like.
- the carbon number of the cycloalkyl group may be 3 to 60, specifically 3 to 40, more specifically 5 to 20.
- the heterocycloalkyl group includes O, S, Se, N or Si as a hetero atom, includes a monocyclic or polycyclic ring having 2 to 60 carbon atoms, and may be further substituted by other substituents.
- polycyclic refers to a group in which a heterocycloalkyl group is directly connected or condensed with another ring group.
- the other ring group may be a heterocycloalkyl group, but may be a different type of ring group, for example, a cycloalkyl group, an aryl group, a heteroaryl group, or the like.
- the heterocycloalkyl group may have 2 to 60 carbon atoms, specifically 2 to 40 carbon atoms, and more specifically 3 to 20 carbon atoms.
- the aryl group includes a monocyclic or polycyclic ring having 6 to 60 carbon atoms, and may be further substituted by other substituents.
- polycyclic means a group directly connected or condensed with an aryl group or another ring group.
- the other ring group may be an aryl group, but may be another type of ring group, such as a cycloalkyl group, a heterocycloalkyl group, a heteroaryl group, and the like.
- the aryl group includes a spiro group.
- the carbon number of the aryl group may be 6 to 60, specifically 6 to 40, more specifically 6 to 25.
- aryl group examples include a phenyl group, a biphenyl group, a triphenyl group, a naphthyl group, an anthryl group, a chrysenyl group, a phenanthrenyl group, a perylenyl group, a fluoranthenyl group, a triphenylenyl group, a phenalenyl group, a pyrethyl group Nyl group, tetracenyl group, pentacenyl group, fluorenyl group, indenyl group, acenaphthylenyl group, benzofluorenyl group, spirobifluorenyl group, 2,3-dihydro-1H-indenyl group, condensed ring groups thereof and the like, but is not limited thereto.
- the fluorenyl group may be substituted, and adjacent substituents may be bonded to each other to form a ring.
- the heteroaryl group includes S, O, Se, N or Si as a hetero atom, and includes a monocyclic or polycyclic ring having 2 to 60 carbon atoms, and may be further substituted by other substituents.
- the polycyclic refers to a group in which a heteroaryl group is directly connected or condensed with another ring group.
- the other ring group may be a heteroaryl group, but may be a different type of ring group, for example, a cycloalkyl group, a heterocycloalkyl group, an aryl group, or the like.
- the heteroaryl group may have 2 to 60 carbon atoms, specifically 2 to 40 carbon atoms, and more specifically 3 to 25 carbon atoms.
- heteroaryl group examples include a pyridyl group, a pyrrolyl group, a pyrimidyl group, a pyridazinyl group, a furanyl group, a thiophene group, an imidazolyl group, a pyrazolyl group, an oxazolyl group, an isoxazolyl group, a thiazolyl group group, isothiazolyl group, triazolyl group, furazanyl group, oxadiazolyl group, thiadiazolyl group, dithiazolyl group, tetrazolyl group, pyranyl group, thiopyranyl group, diazinyl group, oxazinyl group , thiazinyl group, deoxynyl group, triazinyl group, tetrazinyl group, quinolyl group, isoquinolyl group, quinazolinyl group, isoquinazol
- the amine group is a monoalkylamine group; monoarylamine group; monoheteroarylamine group; -NH 2 ; dialkylamine group; diarylamine group; diheteroarylamine group; an alkylarylamine group; an alkyl heteroarylamine group; And it may be selected from the group consisting of an aryl heteroarylamine group, the number of carbon atoms is not particularly limited, but is preferably 1 to 30.
- the amine group include a methylamine group, a dimethylamine group, an ethylamine group, a diethylamine group, a phenylamine group, a naphthylamine group, a biphenylamine group, a dibiphenylamine group, an anthracenylamine group, 9- Methyl-anthracenylamine group, diphenylamine group, phenylnaphthylamine group, ditolylamine group, phenyltolylamine group, triphenylamine group, biphenylnaphthylamine group, phenylbiphenylamine group, biphenylfluorene
- the arylene group means that the aryl group has two bonding positions, that is, a divalent group. Except that each of these is a divalent group, the description of the aryl group described above may be applied.
- the heteroarylene group means that the heteroaryl group has two bonding positions, that is, a divalent group. Except that each of these is a divalent group, the description of the heteroaryl group described above may be applied.
- adjacent group means a substituent substituted on an atom directly connected to the atom in which the substituent is substituted, a substituent sterically closest to the substituent, or another substituent substituted on the atom in which the substituent is substituted.
- two substituents substituted at an ortho position in a benzene ring and two substituents substituted at the same carbon in an aliphatic ring may be interpreted as "adjacent" groups.
- "when a substituent is not indicated in the chemical formula or compound structure” may mean that all positions that can come as a substituent are hydrogen or deuterium. That is, in the case of deuterium, deuterium is an isotope of hydrogen, and some hydrogen atoms may be isotope deuterium, and the content of deuterium may be 0% to 100%.
- deuterium is one of the isotopes of hydrogen, and as an element having a deuteron consisting of one proton and one neutron as an atomic nucleus, hydrogen- It can be expressed as 2, and the element symbol can also be written as D or 2H.
- isotopes have the same atomic number (Z), but isotopes meaning atoms having different mass numbers (A) have the same number of protons, but neutrons It can also be interpreted as an element with a different number of (neutron).
- the 20% content of deuterium in the phenyl group represented by means that the total number of substituents the phenyl group can have is 5 (T1 in the formula), and the number of deuterium is 1 (T2 in the formula). . That is, it can be represented by the following structural formula that the content of deuterium in the phenyl group is 20%.
- a phenyl group having a deuterium content of 0% it may mean a phenyl group that does not contain a deuterium atom, that is, has 5 hydrogen atoms.
- the content of deuterium in the heterocyclic compound represented by Formula 1 may be 0 to 100%.
- the present invention provides a heterocyclic compound represented by the following formula (1).
- X is O, or S
- Ar1, Ar2, and Ar3 are the same as or different from each other and each independently represent a substituted or unsubstituted C6 to C60 aryl group or a substituted or unsubstituted C2 to C60 heteroaryl group,
- R1 to R8 are the same as or different from each other and each independently represent hydrogen; heavy hydrogen; halogen; cyano group; a substituted or unsubstituted C1 to C60 alkyl group; a substituted or unsubstituted C2 to C60 alkenyl group; a substituted or unsubstituted C2 to C60 alkynyl group; a substituted or unsubstituted C1 to C60 alkoxy group; a substituted or unsubstituted C3 to C60 cycloalkyl group; a substituted or unsubstituted C2 to C60 heterocycloalkyl group; a substituted or unsubstituted C6 to C60 aryl group; a substituted or unsubstituted C2 to C60 heteroaryl group; or -NR21R22, wherein R21 and R22 are the same as or different from each other and are each independently a substituted or unsubstituted C1 to C10 al
- L1 to L4 are the same as or different from each other and are each independently a direct bond, a substituted or unsubstituted C6 to C60 arylene group or a substituted or unsubstituted C2 to C60 heteroarylene group,
- n is an integer of 1 to 3, and when m is 2 or more, each Ar1 is the same as or different from each other,
- n, o, p, and q are the same as or different from each other and each independently an integer from 0 to 3, and when each of n, o, p, and q is 2 or more, each of L1, L2, L3 and L4 is each other same or different
- the hetero atom in the substituent including the hetero atom, may be one or more selected from O, S, Se, N, and Si.
- the hetero atom in the substituent including the hetero atom, may be one or more selected from O, S, and N.
- X may be O, and in another embodiment may be S.
- Ar1, Ar2, and Ar3 are the same as or different from each other and each independently a substituted or unsubstituted C6 to C30 aryl group or a substituted or unsubstituted C2 to C30 heteroaryl group can
- Ar1, Ar2, and Ar3 are the same as or different from each other and are each independently a substituted or unsubstituted C6 to C20 aryl group or a substituted or unsubstituted C2 to C20 heteroaryl it can be a gimmick
- Ar1, Ar2, and Ar3 are the same as or different from each other and each independently represent a substituted or unsubstituted phenyl, naphthalenyl, biphenyl, terphenyl, anthracenyl, phenanthrenyl, Pyrenyl, triphenylenyl, carbazolyl, dibenzofuranyl, dibenzothiophenyl, 9,9'-dimethylfluorenyl, 9,9'-dibenzofluorenyl, 9,9'-spirobifluorene It may be a nyl group.
- R1 to R8 are the same as or different from each other and are each independently hydrogen, deuterium, halogen, cyano group, substituted or unsubstituted C1 to C30 alkyl group, substituted or unsubstituted C1 to It may be a C30 alkoxy group, a substituted or unsubstituted C6 to C60 aryl group, a substituted or unsubstituted C2 to C60 heteroaryl group, or -NR21R22, wherein R21 and R22 are the same as or different from each other and each independently , a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C60 aryl group, or a substituted or unsubstituted C2 to C60 heteroaryl group, wherein R21 and R22 are bonded to each other to form a substituted or unsubstituted It may form a cyclic C6
- R1 to R8 are the same as or different from each other and are each independently hydrogen, deuterium, halogen, cyano group, substituted or unsubstituted C1 to C20 alkyl group, substituted or unsubstituted C6 to It may be a C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group, or -NR21R22, wherein R21 and R22 are the same as or different from each other and are each independently a substituted or unsubstituted C1 to C10 alkyl group, It may be a substituted or unsubstituted C6 to C30 aryl group or a substituted or unsubstituted C2 to C30 heteroaryl group, wherein R21 and R22 are bonded to each other to form a substituted or unsubstituted C6 to C30 aromatic hydrocarbon ring or a substituted or An unsubstituted C2 to C30 hetero
- R1 to R8 are the same as or different from each other and each independently represent hydrogen, deuterium, a substituted or unsubstituted C6 to C20 aryl group, or a substituted or unsubstituted C2 to C20 heteroaryl group, or -NR21R22, wherein R21 and R22 are the same as or different from each other and are each independently substituted or unsubstituted phenyl, naphthalenyl, biphenyl, terphenyl, anthracenyl, phenanthrenyl, pyrenyl, Triphenylenyl, carbazolyl, dibenzofuranyl, dibenzothiophenyl, 9,9'-dimethylfluorenyl, 9,9'-dibenzofluorenyl, or 9,9'-spirobifluorenyl group can
- R1 to R8 are the same as or different from each other and each independently represent hydrogen, deuterium, substituted or unsubstituted phenyl, naphthalenyl, biphenyl, terphenyl, anthracenyl, phenanthrenyl , pyrenyl, triphenylenyl, carbazolyl, dibenzofuranyl, dibenzothiophenyl, 9,9'-dimethylfluorenyl, 9,9'-dibenzofluorenyl, 9,9'-spirobiflu It may be an orenyl group.
- R1 to R8 may be the same as or different from each other and each independently represent hydrogen or deuterium.
- L1 to L4 may be the same as or different from each other and each independently represent a substituted or unsubstituted C6 to C30 aryl group or a substituted or unsubstituted C2 to C30 heteroaryl group.
- L1 to L4 may be the same as or different from each other and each independently represent a substituted or unsubstituted C6 to C20 aryl group or a substituted or unsubstituted C2 to C20 heteroaryl group.
- L may be a substituted or unsubstituted phenylene, naphthalene, anthracenylene, phenanthrene, pyridine, or pyrimidine group.
- Ar1, Ar2, and Ar3; R1 to R8; and in the definitions of L1 to L4, 'substitution' is C6 to C30 aryl; C2 to C30 heteroaryl; C6 to C30 arylamine; and one or more substituents selected from the group consisting of C2 to C30 heteroarylamine.
- Ar1, Ar2, and Ar3; R1 to R8; and 'substitution' in the definitions of L1 to L4 is one selected from the group consisting of phenyl, naphthalenyl, pyridinyl, anthracenyl, carbazole, biphenyl, dibenzothiophene, dibenzofuran, and phenanthrenyl Each of the above substituents may be independently formed.
- m may be an integer of 1 to 2, and when m is 2, each Ar1 may be independently selected.
- n may be 1.
- n, o, p, and q are the same as or different from each other and each independently, may be an integer of 0 to 2, and when each of n, o, p, and q is 2,
- Each of L1, L2, L3 and L4 is the same as or different from each other.
- n, o, p, and q may be the same as or different from each other and each independently 0 or 1.
- the heterocyclic compound represented by Formula 1 may be a compound represented by a compound represented by any one of the following Formulas 2 to 5:
- the heterocyclic compound represented by Formula 1 may be a compound represented by any one of the following compounds:
- the compound of Formula 1 may be synthesized as a compound having intrinsic properties of the introduced substituent by introducing various substituents into the corresponding structure.
- a substituent mainly used for the hole injection layer material, the hole transport layer material, the electron blocking layer material, the light emitting layer material, the hole blocking layer material, the electron transport layer material, the electron injection layer material, the electron generating layer material used in manufacturing the organic light emitting device By introducing into the core structure, it is possible to synthesize a material satisfying the conditions required by each organic material layer.
- the heterocyclic compound is at least one selected from a hole injection layer material, a hole transport layer material, an electron blocking layer material, a light emitting layer material, a hole blocking layer material, an electron transport layer material, and an electron injection layer material used in the organic material layer of the organic light emitting device. It can be used for various purposes, and in particular, it can be preferably used as a hole transport layer material and/or an electron blocking layer material.
- the heterocyclic compound of the present invention can exhibit excellent performance in the hole transport layer and/or the electron blocking layer through the control of the band gap and T1 value by strengthening the hole (HOLE) characteristics in the dibenzofuran skeleton. Specifically, by widening the band gap and increasing the T1 value, it is possible to exhibit excellent performance in the hole transport layer and/or the electron blocking layer.
- a first electrode a first electrode
- a second electrode provided to face the first electrode
- an organic light emitting device comprising one or more organic material layers provided between the first electrode and the second electrode
- the organic material layer relates to an organic light emitting device including the heterocyclic compound represented by Formula 1 above.
- the first electrode may be an anode
- the second electrode may be a cathode
- the first electrode may be a cathode
- the second electrode may be an anode
- An organic light emitting device includes a hole injection layer and a hole transport layer on the organic material layer. It may include one layer or two or more layers selected from the group consisting of an electron blocking layer, a light emitting layer, a hole blocking layer, an electron transport layer, and an electron injection layer, which are anode / hole injection layer / hole transport layer / electron blocking layer / light emitting layer It may have a stacked structure in the order of /hole blocking layer/electron transport layer/electron injection layer/cathode, but is not limited thereto.
- the organic light emitting device may be a blue organic light emitting device
- the heterocyclic compound represented by Formula 1 may be used as a material of the blue organic light emitting device.
- the organic light emitting device may be a red organic light emitting device
- the heterocyclic compound represented by Formula 1 may be used as a material of the red organic light emitting device.
- the organic light emitting device may be a green organic light emitting device
- the heterocyclic compound represented by Formula 1 may be used as a material of the green organic light emitting device.
- heterocyclic compound represented by Formula 1 Specific details of the heterocyclic compound represented by Formula 1 are the same as described above.
- the organic light emitting device of the present invention may be manufactured by a conventional method and material for manufacturing an organic light emitting device, except for forming one or more organic material layers using the above-described heterocyclic compound.
- the heterocyclic compound represented by Formula 1 is a hole injection layer material, a hole transport layer material, an electron blocking It may be used for at least one purpose selected from a layer material, a light emitting layer material, a hole blocking layer material, an electron transport layer material, and an electron injection layer material, and in particular, it may be used as a hole transport layer material and/or an electron blocking layer material.
- an organic light emitting device in which an anode 200 , an organic material layer 300 , and a cathode 400 are sequentially stacked on a substrate 100 is illustrated.
- an organic light emitting device in which a cathode, an organic material layer, and an anode are sequentially stacked on a substrate may be implemented.
- the organic light emitting diode according to FIG. 3 includes a hole injection layer 301 , a hole transport layer 302 , a light emitting layer 303 , a hole blocking layer 304 , an electron transport layer 305 , and an electron injection layer 306 .
- the scope of the present invention is not limited by such a laminated structure, and if necessary, the remaining layers except for the light emitting layer may be omitted, and other necessary functional layers such as an electronic blocking layer may be further added.
- the heterocyclic compound 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, inkjet printing, screen printing, spraying, roll coating, and the like, but is not limited thereto.
- 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 is an organic material layer, a hole injection layer, a hole transport layer, an electron blocking layer light emitting layer, a hole blocking layer, an electron transport layer, an electron injection layer, a structure comprising at least one selected from the group consisting of an electron generating layer, etc. can have
- the structure of the organic light emitting device is not limited thereto, and may include a smaller or larger number of organic material layers.
- anode material Materials having a relatively large work function may be used as the anode material, and transparent conductive oxides, metals, conductive polymers, or the like may be used.
- 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); ZnO: Al or SnO 2 : Combination of metals and oxides such as 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.
- anode material Materials having a relatively low work function may be used as the anode material, and a metal, metal oxide, conductive polymer, or the like may be used.
- 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.
- hole injection layer material a known hole injection layer material may be used, for example, a phthalocyanine compound such as copper phthalocyanine disclosed in U.S. Patent No. 4,356,429 or Advanced Material, 6, p.677 (1994).
- a phthalocyanine compound such as copper phthalocyanine disclosed in U.S. Patent No. 4,356,429 or Advanced Material, 6, p.677 (1994).
- Starburst-type amine derivatives described such as tris(4-carbazolyl-9-ylphenyl)amine (TCTA), 4,4',4"-tri[phenyl(m-tolyl)amino]triphenylamine ( m-MTDATA), 1,3,5-tris[4-(3-methylphenylphenylamino)phenyl]benzene (m-MTDAPB), soluble conductive polymer polyaniline/Dodecylbenzenesulfonic acid, or Poly(3,4-ethylenedioxythiophene)/Poly(4-styrenesulfonate), Polyaniline/Camphor sulfonic acid, or Polyaniline/poly(4-styrene-sulfonate) (Polyaniline/Poly(4-styrene-sulfonate)) and the like may be used.
- TCTA tris(4-carbazolyl-9-ylphenyl)amine
- a pyrazoline derivative, an arylamine derivative, a stilbene derivative, a triphenyldiamine derivative, etc. may be used as the hole transport layer material, and a low molecular weight or high molecular material may be used.
- Examples of the electron transport layer material include oxadiazole derivatives, anthraquinodimethane and its derivatives, benzoquinone and its derivatives, naphthoquinone and its derivatives, anthraquinone and its derivatives, tetracyanoanthraquinodimethane and its derivatives, and fluorenone.
- Derivatives, diphenyldicyanoethylene and derivatives thereof, diphenoquinone derivatives, metal complexes of 8-hydroxyquinoline and derivatives thereof, etc. may be used, and polymer materials as well as low molecular weight materials may be used.
- the electron injection layer material for example, LiF is typically used in the art, but the present invention is not limited thereto.
- a red, green or blue light emitting material may be used as the light emitting layer material, and if necessary, two or more light emitting materials may be mixed and used. In this case, two or more light emitting materials may be deposited and used as individual sources, or may be premixed and deposited as a single source for use.
- a fluorescent material may be used as a light emitting layer material
- a phosphorescent material may also be used.
- the light emitting layer material a material that emits light by combining holes and electrons injected from the anode and the cathode, respectively, may be used alone, but materials in which the host material and the dopant material together participate in light emission may be used.
- a host of the light emitting layer material When a host of the light emitting layer material is mixed and used, a host of the same type may be mixed and used, or a host of a different type may be mixed and used. For example, any two or more types of n-type host material and p-type host material may be selected and used as the host material of the light emitting layer.
- the phosphorescent material as the phosphorescent dopant material, those known in the art may be used.
- phosphorescent dopant materials represented by LL'MX', LL'L"M, LMX'X", L 2 MX' and L 3 M may be used, but the scope of the present invention is not limited by these examples. .
- M may be iridium, platinum, osmium, or the like.
- the L is an anionic bidentate ligand coordinated to the M by sp 2 carbon and a hetero atom, and X may function to trap electrons or holes.
- Non-limiting examples of L include 2-(1-naphthyl)benzoxazole, (2-phenylbenzoxazole), (2-phenylbenzothiazole), (2-phenylbenzothiazole), (7,8 -benzoquinoline), (thiophenepyrizine), phenylpyridine, benzothiophenepyrizine, 3-methoxy-2-phenylpyridine, thiophenepyrizine, tolylpyridine, and the like.
- Non-limiting examples of X' and X" include acetylacetonate (acac), hexafluoroacetylacetonate, salicylidene, picolinate, 8-hydroxyquinolinate, and the like.
- the light emitting layer includes the heterocyclic compound represented by Formula 1, and may be used together with an iridium-based dopant.
- a red phosphorescent dopant (piq) 2 (Ir)(acac), a green phosphorescent dopant Ir(ppy) 3 , etc. may be used as the iridium-based dopant.
- the content of the dopant may have a content of 1% to 15%, preferably 3% to 10%, more preferably 5% to 10% based on the entire emission layer.
- the electron blocking layer material is Tris(phenyloyrazole)Iriium, 9,9-bis[4-(N,N-bis-biphenyl-4-ylamino)phenyl]-9Hfluorene(BPAPF), Bis[4-(p, p-ditolylamino)phenyl]diphenylsilane, NPD(4,4'-bis[N-(1-napthyl)-N-phenylamino]biphenyl), mCP(N,N'-dicarbazolyl-3,5-benzene ), MPMP (bis[4-(N,N-diethylamino)-2-methylphenyl](4-methylphenyl)methane) may be used, but is not limited thereto.
- the electron blocking layer may include an inorganic compound.
- a halide compound such as LiF, NaF, KF, RbF, CsF, FrF, MgF 2 , CaF 2 , SrF 2 , BaF 2 , LiCl, NaCl, KCl, RbCl, CsCl, FrCl and Li 2 O, Li 2 O 2 , Na 2 O, K 2 O, Rb 2 O, Rb 2 O 2 , Cs 2 O, Cs 2 O 2 , LiAlO 2 , LiBO 2 , LiTaO 3 , LiNbO 3 , LiWO 4 , Li 2 CO, NaWO 4 , KAlO 2 , K 2 SiO 3 , B 2 O 5 , Al 2 O 3 , SiO 2 and the like may include at least one or a combination thereof, but is not limited thereto.
- an oxadiazole derivative As the hole blocking layer material, an oxadiazole derivative, a triazole derivative, a phenanthroline derivative, BCP, an aluminum complex, etc. may be used, but is not limited thereto.
- the organic light emitting diode according to an embodiment of the present invention may be a top emission type, a back emission type, or a double side emission type depending on a material used.
- heterocyclic compound represented by Formula 1 Specific details of the heterocyclic compound represented by Formula 1 are the same as described above.
- the composition for the organic layer may be used as a hole injection layer material, a hole transport layer material, an electron blocking layer material, a light emitting layer material, a hole blocking layer material, an electron transport layer material and an electron injection layer material, in particular, a hole transport layer material and/or electron blocking material It can be preferably used as a layer material.
- the composition for an organic material layer may further include a material commonly used in the composition for an organic material layer in this field together with the heterocyclic compound represented by Chemical Formula 1.
- it may further include a material, etc. included in order to prepare the heterocyclic compound to be used in the deposition process.
- the step of forming the organic material layer may be to form the hetero compound represented by Formula 1 or the composition for an organic material layer using a thermal vacuum deposition method.
- the organic material layer including the composition for the organic material layer may further include other materials commonly used in this field, if necessary.
- the heterocyclic compound represented by Formula 1 may act on a principle similar to that applied to an organic light emitting device in an organic electronic device including an organic solar cell, an organic photoreceptor, and an organic transistor.
- compound 1-2 (40g, 0.105 mol, 1eq), phenylboronic acid (14.1g, 0.116mol, 1.1eq), K 3 PO 4 (44.6 g, 0.210 mol, 2eq), Pd(PPh 3 ) 4 (6.1 g) 0.0053 mol, 0.05eq) was added to 1,4-dioxane (480ml) and water (120ml) and stirred at 100°C for 6h. When the reaction was completed, the reaction was terminated by adding water after cooling to room temperature, followed by extraction using MC and water. Thereafter, water was removed with MgSO 4 . It was separated by a silica gel column to obtain 33.8 g of compound 1-3 in a yield of 85%.
- Table 2 is a measurement value of 1 H NMR (CDCl 3 , 300Mz)
- Table 3 is a measurement value of the FD-mass spectrometer (FD-MS: Field desorption mass spectrometry).
- the transparent electrode ITO thin film obtained from glass for OLED (manufactured by Samsung-Corning) was ultrasonically washed for 5 minutes each using trichloroethylene, acetone, ethanol, and distilled water sequentially, and then stored in isopropanol and used.
- the ITO substrate is installed in the substrate folder of the vacuum deposition equipment, and the following 4,4',4"-tris(N,N-(2-naphthyl)-phenylamino)triphenylamine ( 4,4',4"-tris(N,N-(2-naphthyl)-phenylamino)triphenyl amine: 2-TNATA) was added.
- a blue light emitting material having the following structure was deposited as a light emitting layer thereon. Specifically, H1, a blue light-emitting host material, was vacuum-deposited to a thickness of 200 ⁇ in one cell in the vacuum deposition equipment, and D1, a blue light-emitting dopant material, was vacuum-deposited thereon at 5 wt% compared to the host material.
- lithium fluoride LiF
- Al cathode As an electron injection layer, lithium fluoride (LiF) was deposited to a thickness of 10 ⁇ , and an Al cathode was deposited to a thickness of 1,000 ⁇ to fabricate an OLED device.
- all organic compounds required for OLED device fabrication were vacuum sublimated and purified under 10-6 to 10-8 torr for each material, respectively, and used for OLED fabrication.
- Example 1 One 4.84 6.88 (0.132, 0.103) 70
- Example 2 17 4.60 6.90 (0.133, 0.102) 85
- Example 3 18 4.50 6.60 (0.133, 0.100) 90
- Example 4 21 4.55 6.70 (0.133, 0.103) 95
- Example 5 22 4.55 6.85 (0.134, 0.101) 90
- Example 6 23 4.88 6.55 (0.131, 0.102) 98
- Example 7 24 4.90 6.58 (0.134, 0.101) 65
- Example 8 25 4.70 6.68 (0.132, 0.103) 90
- Example 9 26 4.85 6.70 (0.133, 0.103) 62
- Example 10 29 4.60 6.76 (0.133, 0.100) 90
- Example 11 33 4.70 6.73 (0.131, 0.103) 85
- Example 12 34 4.84 6.75 (0.133, 0.100) 90
- Example 13 35 4.65 6.73 (0.133, 0.102) 85
- Example 14 36 4.72 6.76 (0.132, 0.101) 82
- Example 15 42 4.74 6.80 (0.133, 0.100
- the blue organic light emitting device using the heterocyclic compound of the present invention as a hole transport layer material is significantly improved compared to the blue organic light emitting devices of Comparative Examples 1 to 8 using NPB and A to G compounds as a hole transport layer material It can be confirmed that it provides the specified driving voltage, luminous efficiency, and lifespan characteristics.
- the NPB used in the organic light emitting device of Comparative Example 1 is similar to the heterocyclic compound of the present invention in that it has an arylamine group, but unlike the heterocyclic compound of the present invention, it does not include a disubstituted dibenzofuran structure. Therefore, due to the structural difference, the organic light emitting device of the present invention exhibited significantly superior effects in all aspects of driving voltage, luminous efficiency, and lifespan characteristics compared to the organic light emitting device of Comparative Example 1.
- Compounds A to G of Comparative Examples 2 to 8 have a structural difference from the heterocyclic compound of the present invention including a disubstituted dibenzofuran structure in that they include a monosubstituted dibenzofuran structure having one substituent.
- a disubstituted dibenzofuran structure in that they include a monosubstituted dibenzofuran structure having one substituent.
- pi-pi stacking of the aromatic ring occurs, thereby increasing the driving voltage, thereby degrading device characteristics.
- disubstituted dibenzofuran pi-pi stacking of the aromatic ring is suppressed, thereby exhibiting an effect of suppressing deterioration of device characteristics due to an increase in driving voltage of an organic light emitting device.
- the heterocyclic compound of the present invention including such a disubstituted dibenzofuran structure provides significantly improved hole transport properties or stability compared to the compounds of Comparative Examples 2 to 8 including a monosubstituted dibenzofuran structure.
- the organic light emitting device of the present invention including a hole transport layer formed using the heterocyclic compound of the present invention has very excellent driving voltage, luminous efficiency, and lifespan characteristics compared to the organic light emitting devices of Comparative Examples 2 to 8 provides
- the transparent electrode ITO thin film obtained from glass for OLED (manufactured by Samsung-Corning) was ultrasonically washed for 5 minutes each using trichloroethylene, acetone, ethanol, and distilled water sequentially, and then stored in isopropanol and used.
- the ITO substrate is installed in the substrate folder of the vacuum deposition equipment, and the following 4,4',4"-tris(N,N-(2-naphthyl)-phenylamino)triphenylamine ( 4,4',4"-tris(N,N-(2-naphthyl)-phenylamino)triphenylamine: 2-TNATA) was added.
- a blue light emitting material having the following structure was deposited as a light emitting layer thereon. Specifically, H1, a blue light-emitting host material, was vacuum-deposited to a thickness of 200 ⁇ in one cell in the vacuum deposition equipment, and D1, a blue light-emitting dopant material, was vacuum-deposited thereon at 5 wt% compared to the host material.
- lithium fluoride LiF
- Al cathode As an electron injection layer, lithium fluoride (LiF) was deposited to a thickness of 10 ⁇ , and an Al cathode was deposited to a thickness of 1,000 ⁇ to fabricate an OLED device.
- all organic compounds required for manufacturing OLED devices were vacuum sublimated and purified under 10 -6 to 10 -8 torr for each material and used for OLED manufacturing.
- the heterocyclic compound of the present invention and the compounds A to G shown in Table 5 below were deposited on the hole transport layer to a thickness of 50 ⁇ to form an electron blocking layer. Except for the formation, organic electroluminescent devices of Examples and Comparative Examples of the present invention were manufactured in the same manner as above. Table 5 shows the results of measuring the driving voltage, luminous efficiency, color coordinates (CIE), and lifespan of the blue organic light emitting diode manufactured above.
- Example 36 One 5.14 5.95 (0.134, 0.101) 73
- Example 37 17 5.20 6.15 (0.133, 0.101)
- Example 38 18 5.24 6.18 (0.134, 0.102)
- Example 39 21 5.26 6.24 (0.134, 0.101) 85
- Example 40 22 4.99 6.25 (0.133, 0.101)
- Example 41 23 5.30 6.15 (0.132, 0.102)
- Example 42 24 5.34 6.10 (0.134, 0.103) 75
- Example 43 25 5.28 6.20 (0.133, 0.101)
- Example 44 5.32 6.15 (0.134, 0.102)
- Example 45 29 4.85 6.29 (0.132, 0.101)
- Example 46 33 4.93 6.30 (0.133, 0.100)
- Example 47 34 5.13 6.23 (0.134, 0.102)
- Example 48 35 5.14 6.28 (0.134, 0.101)
- Example 49 36 4.94 6.28 (0.133, 0.100) 75
- Example 50 42 4.95 6.30 (0.
- the blue organic light emitting device using the heterocyclic compound of the present invention as an electron blocking layer material is the blue organic light emitting device of Comparative Examples 9 and 10 to 16 using NPB and A to G compounds as the electron blocking layer material. It can be seen that the driving voltage, luminous efficiency, and lifespan characteristics are significantly improved in all aspects compared to the device.
- the efficiency and lifespan of the OLED device are reduced.
- a compound having a high LUMO level is used as the electron blocking layer. In this case, electrons passing through the light emitting layer to the anode are blocked by the energy barrier of the electron blocking layer. Therefore, the probability that holes and electrons form excitons increases, and the possibility that they are emitted as light from the emission layer increases.
- the heterocyclic compound of the present invention when used as an electron blocking layer material, exhibits excellent electron blocking performance compared to NPB and compounds A to G.
- the organic light emitting device of the present invention including the electron blocking layer formed of the heterocyclic compound of the present invention provides significantly superior driving voltage, luminous efficiency and lifespan characteristics compared to the organic light emitting devices of Comparative Examples 9 to 16.
- substrate 200 anode
- organic layer 301 hole injection layer
- hole transport layer 303 light emitting layer
Abstract
Description
화합물 | FD-MS | 화합물 | FD-MS |
1 | m/z= 627.26(C47H33NO=627.79) | 17 | m/z= 703.29(C53H37NO=703.88) |
18 | m/z= 663.26(C50H33NO=663.82) | 21 | m/z= 739.29(C56H37NO=739.92) |
22 | m/z= 779.32(C59H41NO=779.98) | 23 | m/z= 753.27(C56H35NO2=753.90) |
24 | m/z= 769.24(C56H35NOS=769.96) | 25 | m/z= 793.30(C59H39NO2=793.97) |
26 | m/z= 809.28(C59H39NOS=810.03) | 29 | m/z= 779.32(C59H41NO=779.98) |
33 | m/z= 829.33(C63H43NO=830.04) | 34 | m/z= 815.32(C62H41NO=816.02) |
35 | m/z= 815.32(C62H41NO=816.02) | 36 | m/z= 753.30(C57H39NO=753.94) |
42 | m/z= 753.30(C57H39NO=753.94) | 45 | m/z= 829.33(C63H43NO=830.04) |
49 | m/z= 719.26(C53H37NS=719.95) | 69 | m/z= 703.29(C53H37NO=703.88) |
70 | m/z= 663.26(C50H33NO=663.82) | 121 | m/z= 703.29(C53H37NO=703.88) |
122 | m/z= 663.26 (C50H33NO= 663.82) |
153 | m/z= 719.26 (C53H37NS= 719.95) |
173 | m/z= 703.29 (C53H37NO= 703.88) |
225 | m/z= 703.29 (C53H37NO= 703.88) |
277 | m/z= 703.29 (C53H37NO= 703.88) |
309 | m/z= 719.26 (C53H37NS= 719.95) |
329 | m/z= 703.29 (C53H37NO= 703.88) |
361 | m/z= 719.26 (C53H37NS= 719.95) |
381 | m/z= 703.29 (C53H37NO= 703.88) |
433 | m/z= 703.29 (C53H37NO= 703.88) |
485 | m/z= 703.29 (C53H37NO= 703.88) |
537 | m/z= 703.29 (C53H37NO= 703.88) |
589 | m/z= 703.29 (C53H37NO= 703.88) |
627 | m/z= 708.32 (C53H32D5NO= 708.92) |
655 | m/z= 708.32 (C53H32D5NO= 708.92) |
화합물 | 구동전압 (V) |
발광효율 (cd/A) |
CIE (x, y) |
수명 (T95) |
|
실시예 1 | 1 | 4.84 | 6.88 | (0.132, 0.103) | 70 |
실시예 2 | 17 | 4.60 | 6.90 | (0.133, 0.102) | 85 |
실시예 3 | 18 | 4.50 | 6.60 | (0.133, 0.100) | 90 |
실시예 4 | 21 | 4.55 | 6.70 | (0.133, 0.103) | 95 |
실시예 5 | 22 | 4.55 | 6.85 | (0.134, 0.101) | 90 |
실시예 6 | 23 | 4.88 | 6.55 | (0.131, 0.102) | 98 |
실시예 7 | 24 | 4.90 | 6.58 | (0.134, 0.101) | 65 |
실시예 8 | 25 | 4.70 | 6.68 | (0.132, 0.103) | 90 |
실시예 9 | 26 | 4.85 | 6.70 | (0.133, 0.103) | 62 |
실시예 10 | 29 | 4.60 | 6.76 | (0.133, 0.100) | 90 |
실시예 11 | 33 | 4.70 | 6.73 | (0.131, 0.103) | 85 |
실시예 12 | 34 | 4.84 | 6.75 | (0.133, 0.100) | 90 |
실시예 13 | 35 | 4.65 | 6.73 | (0.133, 0.102) | 85 |
실시예 14 | 36 | 4.72 | 6.76 | (0.132, 0.101) | 82 |
실시예 15 | 42 | 4.74 | 6.80 | (0.133, 0.100) | 83 |
실시예 16 | 45 | 4.78 | 6.85 | (0.133, 0.102) | 81 |
실시예 17 | 49 | 4.85 | 6.74 | (0.134, 0.103) | 74 |
실시예 18 | 69 | 4.95 | 6.72 | (0.135, 0.103) | 68 |
실시예 19 | 70 | 4.90 | 6.70 | (0.134, 0.102) | 70 |
실시예 20 | 121 | 4.75 | 6.88 | (0.134, 0.100) | 78 |
실시예 21 | 122 | 4.63 | 6.75 | (0.133, 0.102) | 81 |
실시예 22 | 153 | 4.71 | 6.60 | (0.132, 0.102) | 67 |
실시예 23 | 173 | 4.83 | 6.73 | (0.133, 0.101) | 69 |
실시예 24 | 225 | 4.80 | 6.70 | (0.131, 0.102) | 72 |
실시예 25 | 277 | 4.73 | 6.75 | (0.133, 0.101) | 82 |
실시예 26 | 309 | 4.80 | 6.63 | (0.133, 0.102) | 75 |
실시예 27 | 329 | 4.72 | 6.80 | (0.133, 0.100) | 82 |
실시예 28 | 361 | 4.83 | 6.65 | (0.133, 0.102) | 72 |
실시예 29 | 381 | 4.78 | 6.72 | (0.134, 0.103) | 75 |
실시예 30 | 433 | 4.80 | 6.74 | (0.133, 0.101) | 76 |
실시예 31 | 485 | 4.85 | 6.73 | (0.134, 0.104) | 78 |
실시예 32 | 537 | 4.79 | 6.70 | (0.133, 0.102) | 81 |
실시예 33 | 589 | 4.89 | 6.70 | (0.134, 0.104) | 74 |
실시예 34 | 627 | 4.62 | 6.80 | (0.131, 0.101) | 98 |
실시예 35 | 655 | 4.71 | 6.74 | (0.132, 0.101) | 95 |
비교예 1 | NPB | 5.30 | 6.06 | (0.134, 0.101) | 51 |
비교예 2 | A | 5.14 | 6.23 | (0.133, 0.102) | 58 |
비교예 3 | B | 5.23 | 6.30 | (0.134, 0.101) | 59 |
비교예 4 | C | 5.30 | 6.18 | (0.131, 0.101) | 51 |
비교예 5 | D | 5.07 | 6.03 | (0.132, 0.102) | 48 |
비교예 6 | E | 5.15 | 6.15 | (0.133, 0.102) | 50 |
비교예 7 | F | 5.58 | 5.98 | (0.135, 0.103) | 45 |
비교예 8 | G | 5.50 | 6.13 | (0.134, 0.101) | 52 |
화합물 | 구동전압 (V) |
발광효율 (cd/A) |
CIE (x, y) |
수명 (T95) |
|
실시예 36 | 1 | 5.14 | 5.95 | (0.134, 0.101) | 73 |
실시예 37 | 17 | 5.20 | 6.15 | (0.133, 0.101) | 80 |
실시예 38 | 18 | 5.24 | 6.18 | (0.134, 0.102) | 83 |
실시예 39 | 21 | 5.26 | 6.24 | (0.134, 0.101) | 85 |
실시예 40 | 22 | 4.99 | 6.25 | (0.133, 0.101) | 80 |
실시예 41 | 23 | 5.30 | 6.15 | (0.132, 0.102) | 88 |
실시예 42 | 24 | 5.34 | 6.10 | (0.134, 0.103) | 75 |
실시예 43 | 25 | 5.28 | 6.20 | (0.133, 0.101) | 85 |
실시예 44 | 26 | 5.32 | 6.15 | (0.134, 0.102) | 74 |
실시예 45 | 29 | 4.85 | 6.29 | (0.132, 0.101) | 83 |
실시예 46 | 33 | 4.93 | 6.30 | (0.133, 0.100) | 78 |
실시예 47 | 34 | 5.13 | 6.23 | (0.134, 0.102) | 80 |
실시예 48 | 35 | 5.14 | 6.28 | (0.134, 0.101) | 82 |
실시예 49 | 36 | 4.94 | 6.28 | (0.133, 0.100) | 75 |
실시예 50 | 42 | 4.95 | 6.30 | (0.134, 0.100) | 77 |
실시예 51 | 45 | 5.02 | 6.36 | (0.132, 0.101) | 73 |
실시예 52 | 49 | 5.23 | 6.16 | (0.134, 0.103) | 70 |
실시예 53 | 69 | 5.28 | 6.20 | (0.133, 0.101) | 68 |
실시예 54 | 70 | 5.30 | 6.30 | (0.134, 0.100) | 68 |
실시예 55 | 121 | 4.98 | 6.31 | (0.134, 0.101) | 75 |
실시예 56 | 122 | 5.00 | 6.23 | (0.132, 0.101) | 79 |
실시예 57 | 153 | 5.17 | 6.20 | (0.134, 0.102) | 66 |
실시예 58 | 173 | 5.13 | 6.30 | (0.133, 0.101) | 68 |
실시예 59 | 225 | 5.11 | 6.23 | (0.132, 0.101) | 66 |
실시예 60 | 277 | 4.98 | 6.28 | (0.133, 0.100) | 73 |
실시예 61 | 309 | 5.20 | 6.18 | (0.133, 0.102) | 70 |
실시예 62 | 329 | 5.10 | 6.25 | (0.133, 0.100) | 78 |
실시예 63 | 361 | 5.24 | 6.15 | (0.134, 0.102) | 70 |
실시예 64 | 381 | 5.13 | 6.28 | (0.134, 0.100) | 73 |
실시예 65 | 433 | 5.25 | 6.18 | (0.133, 0.101) | 70 |
실시예 66 | 485 | 5.15 | 6.20 | (0.132, 0.101) | 71 |
실시예 67 | 537 | 5.14 | 6.18 | (0.133, 0.100) | 70 |
실시예 68 | 589 | 5.18 | 6.22 | (0.132, 0.102) | 71 |
실시예 69 | 627 | 4.93 | 6.35 | (0.131, 0.100) | 93 |
실시예 70 | 655 | 5.00 | 6.25 | (0.132, 0.100) | 89 |
비교예 9 | NPB | 5.83 | 5.57 | (0.133, 0.101) | 49 |
비교예 10 | A | 5.70 | 5.73 | (0.131, 0.101) | 51 |
비교예 11 | B | 5.78 | 5.85 | (0.132, 0.100) | 54 |
비교예 12 | C | 5.85 | 5.71 | (0.131, 0.101) | 45 |
비교예 13 | D | 5.71 | 5.67 | (0.133, 0.102) | 49 |
비교예 14 | E | 5.85 | 5.65 | (0.134, 0.101) | 52 |
비교예 15 | F | 5.73 | 5.63 | (0.132, 0.100) | 43 |
비교예 16 | G | 5.75 | 5.65 | (0.133, 0.100) | 45 |
Claims (9)
- 하기 화학식 1로 표시되는 헤테로 고리 화합물:[화학식 1]상기 화학식 1에서,X는 O 또는 S이고,Ar1, Ar2, 및 Ar3는 서로 같거나 상이하고 각각 독립적으로, 치환 또는 비치환된 C6 내지 C60의 아릴기 또는 치환 또는 비치환된 C2 내지 C60의 헤테로아릴기이며,R1 내지 R8은 서로 같거나 상이하고 각각 독립적으로, 수소; 중수소; 할로겐; 시아노기; 치환 또는 비치환된 C1 내지 C60의 알킬기; 치환 또는 비치환된 C2 내지 C60의 알케닐기; 치환 또는 비치환된 C2 내지 C60의 알키닐기; 치환 또는 비치환된 C1 내지 C60의 알콕시기; 치환 또는 비치환된 C3 내지 C60의 시클로알킬기; 치환 또는 비치환된 C2 내지 C60의 헤테로시클로알킬기; 치환 또는 비치환된 C6 내지 C60의 아릴기; 치환 또는 비치환된 C2 내지 C60의 헤테로아릴기; 또는 -NR21R22이며, 여기서 상기 R21 및 R22는 서로 같거나 상이하고 각각 독립적으로, 치환 또는 비치환된 C1 내지 C10의 알킬기, 치환 또는 비치환된 C6 내지 C60의 아릴기 또는 치환 또는 비치환된 C2 내지 C60의 헤테로아릴기이며, 상기 R21 및 R22는 서로 결합하여 치환 또는 비치환된 C6 내지 C60의 방향족 탄화수소 고리 또는 치환 또는 비치환된 C2 내지 C60의 헤테로 고리를 형성할 수 있으며,L1 내지 L4는 서로 같거나 상이하고 각각 독립적으로, 직접결합, 치환 또는 비치환된 C6 내지 C60의 아릴렌기 또는 치환 또는 비치환된 C2 내지 C60의 헤테로아릴렌기이고,m은 1 내지 3의 정수이며, m이 2 이상일 경우 각각의 Ar1은 서로 같거나 상이하며,n, o, p, 및 q는 서로 같거나 상이하고 각각 독립적으로, 0 내지 3의 정수이며, n, o, p, 및 q 각각이 2 이상일 때, 각각의 L1, L2, L3 및 L4는 서로 같거나 상이하다.
- 제1항에 있어서,상기 Ar1, Ar2, 및 Ar3는 서로 같거나 상이하고 각각 독립적으로, 치환 또는 비치환된 C6 내지 C30의 아릴기 또는 치환 또는 비치환된 C2 내지 C30의 헤테로아릴기인 것을 특징으로 하는 헤테로 고리 화합물.
- 제1항에 있어서,상기 R1 내지 R8은 서로 같거나 상이하고 각각 독립적으로, 수소; 중수소; 치환 또는 비치환된 C1 내지 C20의 알킬기; 치환 또는 비치환된 C1 내지 C20의 알콕시기; 치환 또는 비치환된 C3 내지 C30의 시클로알킬기; 치환 또는 비치환된 C2 내지 C30의 헤테로시클로알킬기; 치환 또는 비치환된 C6 내지 C30의 아릴기; 치환 또는 비치환된 C2 내지 C30의 헤테로아릴기; 또는 -NR21R22이며, 여기서 상기 R21 및 R22는 서로 같거나 상이하고 각각 독립적으로, 치환 또는 비치환된 C1 내지 C10의 알킬기, 치환 또는 비치환된 C6 내지 C30의 아릴기, 또는 치환 또는 비치환된 C2 내지 C30의 헤테로아릴기이며, 상기 R21 및 R22는 서로 결합하여 치환 또는 비치환된 C6 내지 C30의 방향족 탄화수소 고리 또는 치환 또는 비치환된 C2 내지 C30의 헤테로 고리를 형성할 수 있는 것을 특징으로 하는 헤테로 고리 화합물.
- 제1항에 있어서,상기 X는 O, 또는 S이고,Ar1, Ar2, 및 Ar3는 서로 같거나 상이하고 각각 독립적으로, 치환 또는 비치환된 C6 내지 C30의 아릴기 또는 치환 또는 비치환된 C2 내지 C30의 헤테로아릴기이며,상기 R1 내지 R8은 서로 같거나 상이하고 각각 독립적으로, 수소; 중수소; 치환 또는 비치환된 C6 내지 C30의 아릴기; 치환 또는 비치환된 C2 내지 C30의 헤테로아릴기; 또는 -NR21R22이며, 여기서 상기 R21 및 R22는 서로 같거나 상이하고 각각 독립적으로, 치환 또는 비치환된 C1 내지 C10의 알킬기, 치환 또는 비치환된 C6 내지 C30의 아릴기 또는 치환 또는 비치환된 C2 내지 C30의 헤테로아릴기이며,상기 L1 내지 L4는 서로 같거나 상이하고 각각 독립적으로, 직접결합, 치환 또는 비치환된 C6 내지 C30의 아릴렌기 또는 치환 또는 비치환된 C2 내지 C30의 헤테로아릴렌기인 것을 특징으로 하는 헤테로 고리 화합물.
- 제1 전극;상기 제1 전극과 대향하여 구비된 제2 전극; 및상기 제1 전극과 상기 제2 전극 사이에 구비된 1층 이상의 유기물층을 포함하는 유기발광소자로서,상기 유기물층은 제1항 내지 제6항 중 어느 한 항에 따른 헤테로 고리 화합물을 포함하는 유기발광소자.
- 제7항에 있어서,상기 상기 유기물층은 발광층을 포함하며, 전자주입층, 전자수송층, 정공차단층, 전자차단층, 정공수송층, 및 정공주입층 중에서 선택되는 1층 이상을 더 포함하는 것을 특징으로 하는 유기발광소자.
- 제8항에 있어서,상기 유기물층은 전자차단층 및 정공수송층을 포함하고, 상기 층들 중의 어느 하나 이상은 상기 헤테로고리 화합물을 포함하는 것을 특징으로 하는 유기발광소자.
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