JP4519946B2 - 有機電界発光素子用化合物及び有機電界発光素子 - Google Patents
有機電界発光素子用化合物及び有機電界発光素子 Download PDFInfo
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- JP4519946B2 JP4519946B2 JP2009517791A JP2009517791A JP4519946B2 JP 4519946 B2 JP4519946 B2 JP 4519946B2 JP 2009517791 A JP2009517791 A JP 2009517791A JP 2009517791 A JP2009517791 A JP 2009517791A JP 4519946 B2 JP4519946 B2 JP 4519946B2
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- organic electroluminescent
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- 150000001875 compounds Chemical class 0.000 title claims description 24
- 239000000463 material Substances 0.000 claims description 17
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- 239000000758 substrate Substances 0.000 claims description 10
- 125000000623 heterocyclic group Chemical group 0.000 claims description 8
- 125000003118 aryl group Chemical group 0.000 claims description 7
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- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 4
- 125000002252 acyl group Chemical group 0.000 claims description 4
- 125000003342 alkenyl group Chemical group 0.000 claims description 4
- 125000003545 alkoxy group Chemical group 0.000 claims description 4
- 125000004453 alkoxycarbonyl group Chemical group 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 4
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- 125000000304 alkynyl group Chemical group 0.000 claims description 4
- 125000004663 dialkyl amino group Chemical group 0.000 claims description 4
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- 125000001188 haloalkyl group Chemical group 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
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- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 3
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 3
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- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 claims description 2
- 229910052703 rhodium Inorganic materials 0.000 claims description 2
- 239000010948 rhodium Substances 0.000 claims description 2
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 2
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- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 85
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 19
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- 238000004440 column chromatography Methods 0.000 description 4
- 229940125851 compound 27 Drugs 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 125000001424 substituent group Chemical group 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
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- 230000008021 deposition Effects 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- VVVPGLRKXQSQSZ-UHFFFAOYSA-N indolo[3,2-c]carbazole Chemical class C1=CC=CC2=NC3=C4C5=CC=CC=C5N=C4C=CC3=C21 VVVPGLRKXQSQSZ-UHFFFAOYSA-N 0.000 description 3
- IBHBKWKFFTZAHE-UHFFFAOYSA-N n-[4-[4-(n-naphthalen-1-ylanilino)phenyl]phenyl]-n-phenylnaphthalen-1-amine Chemical group C1=CC=CC=C1N(C=1C2=CC=CC=C2C=CC=1)C1=CC=C(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C3=CC=CC=C3C=CC=2)C=C1 IBHBKWKFFTZAHE-UHFFFAOYSA-N 0.000 description 3
- 238000005215 recombination Methods 0.000 description 3
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- 239000002904 solvent Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 150000004984 aromatic diamines Chemical class 0.000 description 2
- QARVLSVVCXYDNA-UHFFFAOYSA-N bromobenzene Chemical compound BrC1=CC=CC=C1 QARVLSVVCXYDNA-UHFFFAOYSA-N 0.000 description 2
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- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- MGNCLNQXLYJVJD-UHFFFAOYSA-N cyanuric chloride Chemical compound ClC1=NC(Cl)=NC(Cl)=N1 MGNCLNQXLYJVJD-UHFFFAOYSA-N 0.000 description 2
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- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 2
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- 229910000104 sodium hydride Inorganic materials 0.000 description 2
- ZUHZGEOKBKGPSW-UHFFFAOYSA-N tetraglyme Chemical compound COCCOCCOCCOCCOC ZUHZGEOKBKGPSW-UHFFFAOYSA-N 0.000 description 2
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- OMBVEVHRIQULKW-DNQXCXABSA-M (3r,5r)-7-[3-(4-fluorophenyl)-8-oxo-7-phenyl-1-propan-2-yl-5,6-dihydro-4h-pyrrolo[2,3-c]azepin-2-yl]-3,5-dihydroxyheptanoate Chemical compound O=C1C=2N(C(C)C)C(CC[C@@H](O)C[C@@H](O)CC([O-])=O)=C(C=3C=CC(F)=CC=3)C=2CCCN1C1=CC=CC=C1 OMBVEVHRIQULKW-DNQXCXABSA-M 0.000 description 1
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- APSMUYYLXZULMS-UHFFFAOYSA-N 2-bromonaphthalene Chemical compound C1=CC=CC2=CC(Br)=CC=C21 APSMUYYLXZULMS-UHFFFAOYSA-N 0.000 description 1
- JQPFYXFVUKHERX-UHFFFAOYSA-N 2-hydroxy-2-cyclohexen-1-one Natural products OC1=CCCCC1=O JQPFYXFVUKHERX-UHFFFAOYSA-N 0.000 description 1
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- 229910052693 Europium Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- CUJRVFIICFDLGR-UHFFFAOYSA-N acetylacetonate Chemical compound CC(=O)[CH-]C(C)=O CUJRVFIICFDLGR-UHFFFAOYSA-N 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical group 0.000 description 1
- YCOXTKKNXUZSKD-UHFFFAOYSA-N as-o-xylenol Natural products CC1=CC=C(O)C=C1C YCOXTKKNXUZSKD-UHFFFAOYSA-N 0.000 description 1
- 238000000668 atmospheric pressure chemical ionisation mass spectrometry Methods 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
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- 238000002451 electron ionisation mass spectrometry Methods 0.000 description 1
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 1
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- 230000001747 exhibiting effect Effects 0.000 description 1
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- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- SNHMUERNLJLMHN-UHFFFAOYSA-N iodobenzene Chemical compound IC1=CC=CC=C1 SNHMUERNLJLMHN-UHFFFAOYSA-N 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- KPTRDYONBVUWPD-UHFFFAOYSA-N naphthalen-2-ylboronic acid Chemical compound C1=CC=CC2=CC(B(O)O)=CC=C21 KPTRDYONBVUWPD-UHFFFAOYSA-N 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- JOVOSQBPPZZESK-UHFFFAOYSA-N phenylhydrazine hydrochloride Chemical compound Cl.NNC1=CC=CC=C1 JOVOSQBPPZZESK-UHFFFAOYSA-N 0.000 description 1
- 229940038531 phenylhydrazine hydrochloride Drugs 0.000 description 1
- ANRQGKOBLBYXFM-UHFFFAOYSA-M phenylmagnesium bromide Chemical compound Br[Mg]C1=CC=CC=C1 ANRQGKOBLBYXFM-UHFFFAOYSA-M 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
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- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
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- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/14—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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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
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/654—Aromatic compounds comprising a hetero atom comprising only nitrogen as heteroatom
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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
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
- H10K85/6572—Polycyclic condensed heteroaromatic hydrocarbons comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
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Description
また、特許文献7では、適度な電子輸送能力を有する上記BAlqを燐光有機EL素子のホスト材料として用いることが提案されている。本文献によれば、層構成を複雑にすることなく長寿命な燐光有機EL素子が実現できるとされているが、実用上十分なものとはいえない。
環aは、2つの隣接環と縮合する式(a1)又は(a2)で表される芳香環又は複素環を示し、環a’は、3つの隣接環と縮合する式(a1)で表される芳香環又は複素環を示し、Xは、CH又はNを示す。環bは、2つの隣接環と縮合する式(b1)で表される複素環を示す。
Arは芳香族炭化水素基又は芳香族複素環基からなる3価の基を示す。
Lは独立に、置換若しくは未置換の芳香族炭化水素基又は芳香族複素環基を示し、少なくとも一つは縮環構造を有する。
Rは独立に、水素、アルキル基、アラルキル基、アルケニル基、アルキニル基、シアノ基、ジアルキルアミノ基、ジアリールアミノ基、ジアラルキルアミノ基、アミノ基、ニトロ基、アシル基、アルコキシカルボニル基、カルボキシル基、アルコキシル基、アルキルスルホニル基、ハロアルキル基、水酸基、アミド基、置換若しくは未置換の芳香族炭化水素基又は芳香族複素環基を示す。
一般式(II)及び(III)において、
Ar、L及びRは、一般式(I)のAr、L及びRと同じ意味を有する。
環b’は独立に、2つの隣接環と縮合する式(b1)で表される複素環を示す。
(化合物17の合成)
脱気窒素置換した200ml三口フラスコに1,2-シクロヘキサンジオン33.3g(0.297mol)、フェニルヒドラジン塩酸塩86.0g(0.595mol)を加え、これにエタノール1000mlを加えて攪拌させた。その後、同フラスコ内に濃硫酸3.0g(0.03mol)を5分間かけ滴下した。その後65℃まで加熱し、4時間攪拌した。室温まで冷却した後、生じた紫茶色結晶を濾取した後、濾取した結晶をエタノール500mlで二回、リスラリー洗浄をおこなった。これを、減圧乾燥して紫茶色粉末80.0g(0.286mol、収率96.3%)を得た。
次に、上記紫茶色粉末72.0g(0.258mol)に、これに酢酸720g、トリフルオロ酢酸72.0gを加えて攪拌させた。その後100℃まで加熱し、15時間攪拌した。室温まで冷却した後、生じた黄色結晶を濾取した後、濾取した結晶を酢酸200mlでリンス洗浄をおこなった後、ヘキサン200mlでリンス洗浄をおこなった。これを、減圧乾燥して白色粉末A 30.0g(0.117mol、収率45.3%)を得た。
例示化合物17のEI−MS(M+1)は868、融点は398℃であった。
正孔注入層に銅フタロシアニン(CuPC)を用い、正孔輸送層にα-NPD及び電子輸送層にAlq3を用いた。膜厚150nmのITOからなる陽極が形成されたガラス基板上に、各薄膜を真空蒸着法にて、真空度5.0×10-4 Paで積層させた。まず、ITO上に正孔注入層としてCuPCを3.0Å/秒で25nmの膜厚で成膜した。次いで、正孔注入層上に、正孔輸送層としてα-NPDを蒸着速度3.0Å/秒にて55nmの厚さに形成した。
次に、正孔輸送層上に、発光層として(例示化合物17)と(Btp)2Iracac(例示化合物41)とを異なる蒸着源から共蒸着し、47.5nmの厚さに形成した。この時、(Btp)2Iracacの濃度は8.0 %であった。
次に、電子輸送層としてAlq3を蒸着速度3.0Å/秒にて30nmの厚さに形成した。更に、電子輸送層上に、電子注入層としフッ化リチウム(LiF)を蒸着速度0.1Å/秒にて1nmの厚さに形成した。最後に、電子注入層上に、電極としてアルミニウム(Al)を蒸着速度10Å/秒にて200nmの厚さに形成し、有機EL素子を作成した。
(化合物27の合成)
窒素置換した200ml三口フラスコに実施例1で得られた白色粉末A10.0g(0.036mol)、炭酸カリウム12.9g(0.093mol)、銅粉5.7g(0.090mol)、テトラグライム50.0gを加え、窒素気流下で攪拌した。同フラスコ内に2-ブロモナフタレン9.87g(0.047mol)をテトラグライム10.0gに溶解させた溶液を10分間かけ滴下した。滴下終了後、195℃で1時間攪拌を継続した。その後、室温まで冷却し、不溶物を濾取した。濾液にメタノール30gおよび水150gを加え、2時間攪拌した。その後、析出物を濾取し、これを水100gで2回、更に、メタノール100gで1回リスラリー洗浄した。減圧乾燥後、カラムクロマトグラフィーで精製して白色粉末D 13.0g(0.034mol、収率94.7%)を得た。
次に、窒素置換した500ml三口フラスコに塩化シアヌル70.0g(0.380mol)、脱水THF 240mlを加え、窒素気流下で攪拌した。氷浴にて10℃以下に保ちながら、上記で得た反応溶液Aを50分間かけ滴下した。滴下終了後、10℃以下で更に2時間攪拌を続けた。その後、同フラスコを氷浴に浸し、15℃以下に保ちながら10%塩酸130.0gを30分間で滴下した。氷浴を外し、トルエンを200ml投入を加え、1000ml分液ロートにて、有機層と水層に分画した。有機層を150mlの水で三回洗浄し、その後、得られた有機層を硫酸マグネシウムで脱水し、一旦、硫酸マグネシウムを濾別した後、溶媒を減圧留去することことにより得られた濃縮物をヘキサンにて再結晶し、61.6g(0.272mol、収率71.7%)の淡褐色結晶を得た。
例示化合物27のAPCI−MSはm/Z 918[M+H]+、融点は331℃であった。
発光層のホスト材料として例示化合物17に代えて例示化合物27を用いた以外は実施例2と同様にして有機EL素子を作成した。
発光層のホスト材料として例示化合物17に代えてBAlqを用いた以外は実施例2と同様にして有機EL素子を作成した。
Claims (7)
- 基板上に積層された陽極と陰極の間に、発光層を有する有機電界発光素子であって、下記一般式(I)で表される有機電界発光素子用化合物を含むことを特徴とする有機電界発光素子。
環aは、2つの隣接環と縮合する式(a1)で表される芳香環を示し、Xは、CHを示す。
環bは、2つの隣接環と縮合する式(b1)で表される複素環を示し、
Arは芳香族炭化水素基又は芳香族複素環基からなる3価の基を示し、
Lは独立に、置換若しくは未置換の芳香族炭化水素基又は芳香族複素環基を示し、少なくとも一つは縮環構造を有する。
Rは独立に、水素、アルキル基、アラルキル基、アルケニル基、アルキニル基、シアノ基、ジアルキルアミノ基、ジアリールアミノ基、ジアラルキルアミノ基、アミノ基、ニトロ基、アシル基、アルコキシカルボニル基、カルボキシル基、アルコキシル基、アルキルスルホニル基、ハロアルキル基、水酸基、アミド基、又は置換若しくは未置換の芳香族炭化水素基若しくは芳香族複素環基を示す。 - 基板上に積層された陽極と陰極の間に、発光層を有する有機電界発光素子であって、該発光層が、燐光発光性ドーパントと、一般式(I)で表される有機電界発光素子用化合物をホスト材料として含有することを特徴とする請求項1に記載の有機電界発光素子。
- 発光層に含有される燐光発光ドーパントが、ルテニウム、ロジウム、パラジウム、銀、レニウム、オスミウム、イリジウム、白金及び金から選ばれる少なくとも一つの金属を含む有機金属錯体である請求項2〜4のいずれかに記載の有機電界発光素子。
- 陽極と発光層の間に正孔注入輸送層を有し、陰極と発光層の間に電子注入輸送層を有してなる請求項2〜5のいずれかに記載の有機電界発光素子。
- 発光層と電子注入輸送層の間に正孔阻止層を有してなる請求項6記載の有機電界発光素子。
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- 2008-05-23 KR KR1020097025726A patent/KR101005160B1/ko active IP Right Grant
- 2008-05-23 EP EP08764569.3A patent/EP2169029A4/en not_active Withdrawn
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Also Published As
Publication number | Publication date |
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US20100148162A1 (en) | 2010-06-17 |
JPWO2008149691A1 (ja) | 2010-08-26 |
EP2169029A1 (en) | 2010-03-31 |
US8013330B2 (en) | 2011-09-06 |
TW200914578A (en) | 2009-04-01 |
CN101679852A (zh) | 2010-03-24 |
KR101005160B1 (ko) | 2011-01-04 |
EP2169029A4 (en) | 2013-05-29 |
KR20100017738A (ko) | 2010-02-16 |
WO2008149691A1 (ja) | 2008-12-11 |
CN101679852B (zh) | 2012-12-05 |
TWI457416B (zh) | 2014-10-21 |
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