WO2005090512A1 - New materials for injecting or transporting holes and organic electroluminescence devices using the same - Google Patents
New materials for injecting or transporting holes and organic electroluminescence devices using the same Download PDFInfo
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- WO2005090512A1 WO2005090512A1 PCT/KR2005/000794 KR2005000794W WO2005090512A1 WO 2005090512 A1 WO2005090512 A1 WO 2005090512A1 KR 2005000794 W KR2005000794 W KR 2005000794W WO 2005090512 A1 WO2005090512 A1 WO 2005090512A1
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- formula
- mmol
- compound
- light emitting
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- 238000005401 electroluminescence Methods 0.000 title abstract description 62
- 239000000463 material Substances 0.000 title description 58
- 150000001875 compounds Chemical class 0.000 claims abstract description 210
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 18
- 238000002347 injection Methods 0.000 claims description 46
- 239000007924 injection Substances 0.000 claims description 46
- 230000005525 hole transport Effects 0.000 claims description 41
- 125000000217 alkyl group Chemical group 0.000 claims description 12
- -1 heteroaromatic hydrocarbon Chemical class 0.000 claims description 12
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 9
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 9
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical group C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 claims description 8
- 125000003277 amino group Chemical group 0.000 claims description 7
- 229910052736 halogen Inorganic materials 0.000 claims description 7
- 150000002367 halogens Chemical class 0.000 claims description 7
- 229930195733 hydrocarbon Natural products 0.000 claims description 7
- 239000004215 Carbon black (E152) Substances 0.000 claims description 6
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 6
- KYQCOXFCLRTKLS-UHFFFAOYSA-N Pyrazine Chemical compound C1=CN=CC=N1 KYQCOXFCLRTKLS-UHFFFAOYSA-N 0.000 claims description 6
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 claims description 6
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 claims description 6
- 125000003545 alkoxy group Chemical group 0.000 claims description 6
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims description 6
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 6
- AWJUIBRHMBBTKR-UHFFFAOYSA-N isoquinoline Chemical compound C1=NC=CC2=CC=CC=C21 AWJUIBRHMBBTKR-UHFFFAOYSA-N 0.000 claims description 6
- 150000002825 nitriles Chemical class 0.000 claims description 6
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 6
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 claims description 5
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- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 claims description 3
- ZCQWOFVYLHDMMC-UHFFFAOYSA-N Oxazole Chemical compound C1=COC=N1 ZCQWOFVYLHDMMC-UHFFFAOYSA-N 0.000 claims description 3
- PCNDJXKNXGMECE-UHFFFAOYSA-N Phenazine Natural products C1=CC=CC2=NC3=CC=CC=C3N=C21 PCNDJXKNXGMECE-UHFFFAOYSA-N 0.000 claims description 3
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 claims description 3
- 235000010290 biphenyl Nutrition 0.000 claims description 3
- 239000004305 biphenyl Substances 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 125000001624 naphthyl group Chemical group 0.000 claims description 3
- WCPAKWJPBJAGKN-UHFFFAOYSA-N oxadiazole Chemical compound C1=CON=N1 WCPAKWJPBJAGKN-UHFFFAOYSA-N 0.000 claims description 3
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical compound C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 claims description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 3
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- 125000005495 pyridazyl group Chemical group 0.000 claims description 3
- 125000004076 pyridyl group Chemical group 0.000 claims description 3
- VLLMWSRANPNYQX-UHFFFAOYSA-N thiadiazole Chemical compound C1=CSN=N1.C1=CSN=N1 VLLMWSRANPNYQX-UHFFFAOYSA-N 0.000 claims description 3
- 229930192474 thiophene Natural products 0.000 claims description 3
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- 125000002178 anthracenyl group Chemical group C1(=CC=CC2=CC3=CC=CC=C3C=C12)* 0.000 claims description 2
- 125000006615 aromatic heterocyclic group Chemical group 0.000 claims description 2
- UREZNYTWGJKWBI-UHFFFAOYSA-M benzethonium chloride Chemical compound [Cl-].C1=CC(C(C)(C)CC(C)(C)C)=CC=C1OCCOCC[N+](C)(C)CC1=CC=CC=C1 UREZNYTWGJKWBI-UHFFFAOYSA-M 0.000 claims description 2
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- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 description 62
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- 229910052943 magnesium sulfate Inorganic materials 0.000 description 31
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- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 27
- 239000007858 starting material Substances 0.000 description 24
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 21
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 18
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 15
- 238000000034 method Methods 0.000 description 15
- 239000011368 organic material Substances 0.000 description 15
- 239000000243 solution Substances 0.000 description 15
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 12
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 12
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 description 12
- DYHSDKLCOJIUFX-UHFFFAOYSA-N tert-butoxycarbonyl anhydride Chemical compound CC(C)(C)OC(=O)OC(=O)OC(C)(C)C DYHSDKLCOJIUFX-UHFFFAOYSA-N 0.000 description 12
- 238000001771 vacuum deposition Methods 0.000 description 12
- 125000000609 carbazolyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 description 10
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 10
- 0 CCC=C*CC(CC)=C[C@@]1C2=CCCC=C2C(C)=*(C)CC1 Chemical compound CCC=C*CC(CC)=C[C@@]1C2=CCCC=C2C(C)=*(C)CC1 0.000 description 9
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 9
- 125000003118 aryl group Chemical group 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 8
- KEQFTVQCIQJIQW-UHFFFAOYSA-N N-Phenyl-2-naphthylamine Chemical compound C=1C=C2C=CC=CC2=CC=1NC1=CC=CC=C1 KEQFTVQCIQJIQW-UHFFFAOYSA-N 0.000 description 8
- PCLIMKBDDGJMGD-UHFFFAOYSA-N N-bromosuccinimide Chemical compound BrN1C(=O)CCC1=O PCLIMKBDDGJMGD-UHFFFAOYSA-N 0.000 description 8
- 238000005481 NMR spectroscopy Methods 0.000 description 8
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
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- 238000005160 1H NMR spectroscopy Methods 0.000 description 7
- 125000001424 substituent group Chemical group 0.000 description 7
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 6
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- 235000019341 magnesium sulphate Nutrition 0.000 description 6
- 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 6
- 239000010409 thin film Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 150000001412 amines Chemical class 0.000 description 5
- 230000009477 glass transition Effects 0.000 description 5
- 125000005843 halogen group Chemical group 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 5
- 239000010949 copper Substances 0.000 description 4
- 239000012153 distilled water Substances 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- XEZNGIUYQVAUSS-UHFFFAOYSA-N 18-crown-6 Chemical compound C1COCCOCCOCCOCCOCCO1 XEZNGIUYQVAUSS-UHFFFAOYSA-N 0.000 description 3
- QPTWWBLGJZWRAV-UHFFFAOYSA-N 2,7-dibromo-9h-carbazole Chemical compound BrC1=CC=C2C3=CC=C(Br)C=C3NC2=C1 QPTWWBLGJZWRAV-UHFFFAOYSA-N 0.000 description 3
- TWPMMLHBHPYSMT-UHFFFAOYSA-N 3-methyl-n-phenylaniline Chemical compound CC1=CC=CC(NC=2C=CC=CC=2)=C1 TWPMMLHBHPYSMT-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
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- 238000010521 absorption reaction Methods 0.000 description 3
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- ABMCIJZTMPDEGW-UHFFFAOYSA-N n-(4-bromophenyl)-n-phenylnaphthalen-1-amine Chemical compound C1=CC(Br)=CC=C1N(C=1C2=CC=CC=C2C=CC=1)C1=CC=CC=C1 ABMCIJZTMPDEGW-UHFFFAOYSA-N 0.000 description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 description 3
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
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- FIHILUSWISKVSR-UHFFFAOYSA-N 3,6-dibromo-9h-carbazole Chemical compound C1=C(Br)C=C2C3=CC(Br)=CC=C3NC2=C1 FIHILUSWISKVSR-UHFFFAOYSA-N 0.000 description 2
- QENGPZGAWFQWCZ-UHFFFAOYSA-N 3-Methylthiophene Chemical compound CC=1C=CSC=1 QENGPZGAWFQWCZ-UHFFFAOYSA-N 0.000 description 2
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- YUDBWNNTJANNOY-UHFFFAOYSA-N Cc(cc1)ccc1N(c(cc1)ccc1-[n](c(ccc(N(c1ccc(C)cc1)c1cccc2c1cccc2)c1)c1c1c2)c1ccc2N(c1ccc(C)cc1)c1cccc2c1cccc2)c1cccc2ccccc12 Chemical compound Cc(cc1)ccc1N(c(cc1)ccc1-[n](c(ccc(N(c1ccc(C)cc1)c1cccc2c1cccc2)c1)c1c1c2)c1ccc2N(c1ccc(C)cc1)c1cccc2c1cccc2)c1cccc2ccccc12 YUDBWNNTJANNOY-UHFFFAOYSA-N 0.000 description 2
- IADZLXUKYBMDAD-UHFFFAOYSA-N Cc1cc(N(c(cc2)ccc2-[n](c(ccc(N(c2cc(C)ccc2)c2cccc3c2cccc3)c2)c2c2c3)c2ccc3N(c2cccc(C)c2)c2cccc3c2cccc3)c2c(cccc3)c3ccc2)ccc1 Chemical compound Cc1cc(N(c(cc2)ccc2-[n](c(ccc(N(c2cc(C)ccc2)c2cccc3c2cccc3)c2)c2c2c3)c2ccc3N(c2cccc(C)c2)c2cccc3c2cccc3)c2c(cccc3)c3ccc2)ccc1 IADZLXUKYBMDAD-UHFFFAOYSA-N 0.000 description 2
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- VWNCIFGADVGFBF-UHFFFAOYSA-N n-(3-methylphenyl)naphthalen-1-amine Chemical compound CC1=CC=CC(NC=2C3=CC=CC=C3C=CC=2)=C1 VWNCIFGADVGFBF-UHFFFAOYSA-N 0.000 description 2
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- 125000001140 1,4-phenylene group Chemical group [H]C1=C([H])C([*:2])=C([H])C([H])=C1[*:1] 0.000 description 1
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- OVSKIKFHRZPJSS-UHFFFAOYSA-N 2,4-D Chemical compound OC(=O)COC1=CC=C(Cl)C=C1Cl OVSKIKFHRZPJSS-UHFFFAOYSA-N 0.000 description 1
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- 125000001622 2-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C(*)C([H])=C([H])C2=C1[H] 0.000 description 1
- CWVPIIWMONJVGG-UHFFFAOYSA-N 3-methyl-n-(3-methylphenyl)aniline Chemical compound CC1=CC=CC(NC=2C=C(C)C=CC=2)=C1 CWVPIIWMONJVGG-UHFFFAOYSA-N 0.000 description 1
- SQTLUXJWUCHKMT-UHFFFAOYSA-N 4-bromo-n,n-diphenylaniline Chemical compound C1=CC(Br)=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 SQTLUXJWUCHKMT-UHFFFAOYSA-N 0.000 description 1
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- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
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- VHBFFQKBGNRLFZ-UHFFFAOYSA-N flavone Chemical compound O1C2=CC=CC=C2C(=O)C=C1C1=CC=CC=C1 VHBFFQKBGNRLFZ-UHFFFAOYSA-N 0.000 description 1
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- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
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- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000002198 insoluble material Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- RTRAMYYYHJZWQK-UHFFFAOYSA-N iridium;2-phenylpyridine Chemical compound [Ir].C1=CC=CC=C1C1=CC=CC=N1 RTRAMYYYHJZWQK-UHFFFAOYSA-N 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
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- 238000004020 luminiscence type Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- RQIAICDOHSGNLG-UHFFFAOYSA-N n-(3-methylphenyl)naphthalen-2-amine Chemical compound CC1=CC=CC(NC=2C=C3C=CC=CC3=CC=2)=C1 RQIAICDOHSGNLG-UHFFFAOYSA-N 0.000 description 1
- WTGFXTRZOVCMTM-UHFFFAOYSA-N n-(4-bromophenyl)-n-phenylnaphthalen-2-amine Chemical compound C1=CC(Br)=CC=C1N(C=1C=C2C=CC=CC2=CC=1)C1=CC=CC=C1 WTGFXTRZOVCMTM-UHFFFAOYSA-N 0.000 description 1
- RWYRKFWBKGQTLU-UHFFFAOYSA-N n-(4-methylphenyl)naphthalen-1-amine Chemical compound C1=CC(C)=CC=C1NC1=CC=CC2=CC=CC=C12 RWYRKFWBKGQTLU-UHFFFAOYSA-N 0.000 description 1
- IBJHDUPUTZQCLL-UHFFFAOYSA-N n-(4-methylphenyl)naphthalen-2-amine Chemical compound C1=CC(C)=CC=C1NC1=CC=C(C=CC=C2)C2=C1 IBJHDUPUTZQCLL-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- VMVGVGMRBKYIGN-UHFFFAOYSA-N n-naphthalen-1-ylnaphthalen-1-amine Chemical compound C1=CC=C2C(NC=3C4=CC=CC=C4C=CC=3)=CC=CC2=C1 VMVGVGMRBKYIGN-UHFFFAOYSA-N 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- 150000007978 oxazole derivatives Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920000767 polyaniline Chemical class 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
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- 229920000128 polypyrrole Chemical class 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- ORFSSYGWXNGVFB-UHFFFAOYSA-N sodium 4-amino-6-[[4-[4-[(8-amino-1-hydroxy-5,7-disulfonaphthalen-2-yl)diazenyl]-3-methoxyphenyl]-2-methoxyphenyl]diazenyl]-5-hydroxynaphthalene-1,3-disulfonic acid Chemical compound COC1=C(C=CC(=C1)C2=CC(=C(C=C2)N=NC3=C(C4=C(C=C3)C(=CC(=C4N)S(=O)(=O)O)S(=O)(=O)O)O)OC)N=NC5=C(C6=C(C=C5)C(=CC(=C6N)S(=O)(=O)O)S(=O)(=O)O)O.[Na+] ORFSSYGWXNGVFB-UHFFFAOYSA-N 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 125000005504 styryl group Chemical group 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 238000002061 vacuum sublimation Methods 0.000 description 1
- 238000005019 vapor deposition process Methods 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical class [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G49/00—Conveying systems characterised by their application for specified purposes not otherwise provided for
- B65G49/05—Conveying systems characterised by their application for specified purposes not otherwise provided for for fragile or damageable materials or articles
- B65G49/06—Conveying systems characterised by their application for specified purposes not otherwise provided for for fragile or damageable materials or articles for fragile sheets, e.g. glass
- B65G49/061—Lifting, gripping, or carrying means, for one or more sheets forming independent means of transport, e.g. suction cups, transport frames
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/02—Adaptations of individual rollers and supports therefor
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
-
- 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
- H10K85/633—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G13/00—Roller-ways
- B65G13/02—Roller-ways having driven rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2249/00—Aspects relating to conveying systems for the manufacture of fragile sheets
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1003—Carbocyclic compounds
- C09K2211/1007—Non-condensed systems
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1003—Carbocyclic compounds
- C09K2211/1011—Condensed systems
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1003—Carbocyclic compounds
- C09K2211/1014—Carbocyclic compounds bridged by heteroatoms, e.g. N, P, Si or B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1018—Heterocyclic compounds
- C09K2211/1025—Heterocyclic compounds characterised by ligands
- C09K2211/1029—Heterocyclic compounds characterised by ligands containing one nitrogen atom as the heteroatom
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Definitions
- the present invention relates to a novel compound that can greatly improve lifespan, efficiency and thermal stability of organic light emitting devices, and to an organic light emitting device comprising the same compound in an organic compound layer.
- organic electroluminescence displays have an additional advantage in that they are produced at a lower cost compared to liquid crystal displays.
- Organic light emitting devices are based on the mechanism wherein electrons and holes injected to an organic film formed of organic compounds through an anode and a cathode form exitons when they are recombined and then light having a certain wavelength is emitted from the exitons.
- Pope et al found electroluminescence in an anthracene single crystal for the first time.
- Such organic light emitting devices are classified into those using fluorescence and those using phosphorescence capable of providing a high efficiency of up to three times of the fluorescence- based efficiency.
- such organic light emitting devices may be classified according to molecular weights of the organic materials forming organic light emitting devices, i.e., those prepared by a low-molecular weight method wherein a device is formed by using a vacuum sublimation process and those prepared by a high-molecular weight method wherein a device is formed by using solution processes such as a spin coating, ink jet printing or roll coating process. As shown in FIG.
- a conventional organic light emitting device includes an anode, a hole injection layer that accepts holes from the anode, a hole transport layer that transports holes, a light emitting layer in which holes and electrons are recombined to emit light, an electron transport layer that accepts electrons from a cathode and transport them to the light emitting layer, and a cathode.
- the above thin film layers are formed by a vacuum deposition process.
- the reason for manufacturing organic light emitting devices having a multilayered thin film structure is as follows. It is possible to transport holes and electrons to a light emitting layer more efficiently when a suitable hole transport layer and electron transport layer are used, because the moving rate of holes is significantly higher than that of electrons in organic materials.
- a substrate 1 is the support for an organic light emitting device and may be formed of a silicone wafer, quartz or glass plate, metal plate, plastic film or sheet, etc. Preferably, glass plates or transparent plates made of synthetic resins such as polyester, polymethacrylate or polysulfone are used.
- a first electrode (anode) 2 is disposed on the substrate 1.
- the anode serves to inject holes to a hole injection layer 3 and may be formed of metals such as aluminum, gold, silver, nickel, palladium or platinum, metal oxides such as indium-tin oxides or indium-zinc oxides, halogenated metals, carbon black, or conductive polymers such as poly (3-methylthiophene) , polypyrrole or polyaniline.
- the hole injection layer 3 is disposed on the anode 2.
- Materials used in the hole injection layer have to provide high efficiency of hole injection from the anode and have to transport the injected holes efficiently. In this regard, the materials should have low ionization potential, high transparency to visible light and excellent stability to holes.
- Materials for the hole injection layer include compounds that have excellent thermal stability while maintaining a stable interface with the anode.
- Typical examples of the materials include copper phthalocyanine (CuPc) , which is a porphyrin-copper complex disclosed in US Patent No. 4,356,429 by Kodak, Co. Because CuPc is the most stable compound for use in a hole injection layer, it has been used widely. However, it shows an absorption band at the blue and red zones, and thus has problems when manufacturing full-color display devices. Recently, starburst-like aromatic aryl amine compounds having no absorption band at the blue zone are known (US Patent No. 5,256,945 and Japanese Laid-Open Patent No. 1999-219788, and see the following formulae 4-12) . Particularly, among the starburst-like amines having no absorption band at the blue zone, compounds represented by the following formulae 8-12 having a glass transition temperature of 100 ° C or higher and excellent stability are used. formula 5 formula 6
- Japanese Laid-Open Patent No. 2003- 238501 discloses aromatic oligoamine derivatives having at least five nitrogen atoms in one molecule (formulae 18 and 19) .
- Japanese Laid-Open Patent No. 2003-317966 and US Patent No. 6,660,410 disclose a carbazole group-containing material (formula 20) , which is specifically used as host forming a light emitting layer in an organic light emitting device using phosphorescence and is claimed to improve the lifespan of an organic light emitting device compared to conventionally known CBP (carbazole biphenyl) .
- CBP carbazole biphenyl
- Other compounds used in a hole injection layer are represented by the following formulae 21-27.
- a hole transport layer 4 is disposed on the hole injection layer 3.
- the hole transport layer serves to accept holes from the hole injection layer and transport them to an organic light emitting layer 5 disposed thereon.
- the hole transport layer has high hole transportability and stability to holes. It also serves as a barrier to protect electrons.
- the materials for a hole transport layer have an improved heat resistance and a glass transition temperature (Tg) of 80°C or higher.
- Materials satisfying such requirements include NPB, spyro-arylamine compounds, perylene-arylamine compounds, azacycloheptatriene compounds, bis (diphenylvinylphenyl) anthracene, silicon germanium oxide compounds, silicon- containing arylamine compounds, or the like.
- arylamine compounds having high hole transport rate and excellent electrical stability.
- hole transport materials into which a naphthyl substituent or spyro group is introduced are reported (see, US Patent Nos. 5,554,459 and 5,840,217).
- N,N'- diphenyl-N,N' -bis (3-methylphenyl) -1, 1' -diphenyl-4, 4' - diamine is frequently used as organic hole transport material.
- TPD is unstable at a temperature of 60 ° C or higher
- N-naphthyl-N-phenyl- 1, 1' -diphenyl-4, 4' -diamine (NPD) based materials or amine compounds substituted with a greater number of aromatic groups that have a higher glass transition temperature are used at the present time.
- organic single molecules for use in a hole transport layer should have high hole transport rate.
- organic single materials for a hole transport layer should have an adequate ionization potential value of between that of a hole injection layer and that of a light emitting layer so as to inhibit the generation of exitons at the interface between hole transport layer and light emitting layer. Further, the organic single materials for a hole transport layer are required to control the electrons transported from the light emitting layer.
- An organic light emitting layer 5 is disposed on the hole transport layer .
- the organic light emitting layer which serves to emit lights by the recombination of holes and electrons injected from the anode and cathode, respectively, is formed of materials having high quantum efficiency.
- Organic single molecules for use in a light emitting layer where light emission is accomplished by the recombination of holes and electrons are classified functionally into host materials and guest materials.
- host materials or guest materials can accomplish light emission when used alone.
- host materials are doped with guest materials in order to solve the problems of low efficiency and luminance and the problem of self-packing of the same molecules that causes the excimer characteristics to come out in addition to the unique characteristics of each molecule.
- 8-hydroxyquinoline aluminum salt (Alq3) is uniquely used and may be doped with high-quantum efficiency materials such as quinacridone or C545t so as to increase luminous efficiency.
- Organic materials for a blue light emitting layer have problems in that they have low melting points and low luminous stability at the initial time and that they have poor lifespan, compared to Alq3 as green light emitting material. Additionally, because most materials for a blue light emitting layer represent a light blue color rather than pure blue color, they are not suitable for full-color version displays, and so, they are also doped with perylene or distryl amines (DSA) to increase luminous efficiency.
- Typical organic materials for a blue light emitting layer include aromatic hydrocarbons, spyro-type compounds, aluminum-containing organometallic compounds, heterocyclic compounds having an imidazole group, fused aromatic compounds, as disclosed in US Patent Nos.
- An electron transport layer 6 is disposed on the organic light emitting layer 5.
- the materials as having high electron injection efficiency from a cathode 7 (a second electrode) and capable of transporting the injected electrons efficiently are used.
- the materials should have high electron affinity and electron moving rate and excellent stability to electrons.
- Materials that meet the above requirements include: aromatic compounds such as tetraphenylbutadiene (Japanese Laid-Open Patent No. Sho57-51781) , metal complexes such as 8-hydroxyquinoline aluminum (Japanese Laid-Open Patent No. Sho59-194393) , metal complexes of 10-hydroxybenzo [h] quinoline (Japanese Laid-Open Patent No. Hei6-322362) , cyclopentadiene derivatives (Japanese Laid-Open Patent No. Hei2-289675) , bisstyrylbenzene derivatives (Japanese Laid-Open Patent Nos.
- preferred organic single molecules for use in an electron transport layer include organometal complexes having relatively high stability to electrons and high electron moving rate. Particularly, it is reported that Alq3 is the most preferred, because it has excellent stability and high electron affinity.
- electron transport materials include Flavon or silol series available from Chisso Corporation. There is no especially preferred candidate other than the above materials for use in the electron transport layer.
- electron transport materials are used in the form of a mixture with metals for use in cathodes. Otherwise, inorganic materials such as lithium fluoride (LiF) may be used.
- the cathode 7 serves to inject electrons to the organic light emitting layer 5.
- the materials used in the anode 2 may be used. However, it is preferable to use metals having low work function in order to inject electrons more efficiently.
- the metals include lithium, cesium, sodium, tin, magnesium, indium, calcium, aluminum, etc., and alloys thereof.
- the organic electroluminescence display device using organic single molecules suitable for each of the layers forming the device generally has short life span and has problems that it provides poor shelf durability and reliability. It is thought that such problems result from physical, chemical, photochemical and electrochemical changes in organic materials, oxidation of cathode, interlayer separation, and melting, crystallization and pyrolysis of organic compounds .
- FIG. 1 is a sectional view showing the structure of a conventional organic electroluminescence device.
- an object of the present invention to provide a novel material for hole injection and hole transport layer, which can improve luminous efficiency, stability and lifespan of an organic electroluminescence device, and to provide an organic electroluminescence device using the same material. It is another object of the present invention to provide a material having high glass transition temperature, excellent thermal stability and sublimation property needed for vacuum vapor deposition processes. According to an aspect of the present invention, there are provided an organic compound represented by the following formula 1 and an organic electroluminescence device comprising the same compound in an organic compound layer:
- RI to R10 are the same or different, and preferably each comprises, only once or repeatedly at least two times, at least one selected from the group consisting of a hydrogen atom; aliphatic hydrocarbon having 1-20 carbon atoms; aromatic hydrocarbon non-substituted or substituted with a nitro, nitrile, halogen, alkyl, alkoxy or amino group; silicon group having an aromatic substituent; heterocyclic aromatic hydrocarbon non-substituted or substituted
- each of 1, m and n is an integer of 1 or more and o is an integer of 0 or more, preferably, 1, m and n represent 1 at the same time, and o is 0, with the proviso that the compound represented by formula 1 wherein RI, R2, R3, R4, R5 and R6 represent hydrogen atoms simultaneously and D is also a hydrogen atom is excluded.
- the above aromatic hydrocarbon includes monocyclic aromatic rings such as phenyl, biphenyl and terphenyl and multicyclic aromatic rings such as naphthyl, antriracenyl, phenanthracene, pyrenyl and perylenyl or the like.
- the above heteroaromatic hydrocarbon includes thiophene, furan, pyrrole, imidazole, thiazole, oxazole, oxadiazole, thiadiazole, triazole, pyridyl, pyridazyl, pyrazine, quinoline, isoquinoline, etc.
- the compound represented by the above formula 1 may be a compound represented by any one formula selected from the following formulae 2a-2e : [formula 2a]
- the compound represented by the above formula 1 may be a compound represented by any one formula selected from the following formulae 3a-3n: [formula 3a]
- each of Rl- R8 is the same as defined with regard to the above formula 1.
- the organic compounds represented by the formula of 1, 2 or 3 are capable of serving as hole injection and hole transport materials, and thus can be used in at least one layer selected from, a hole injection layer, hole transport layer and a light emitting layer in an organic light emitting device.
- each of the compounds comprises a carbazole group and accepts and transports holes with ease. It is thought that such functions result from the cyclic structure present in the carbazole group and the presence of an aryl group bonded to the carbazole group.
- an organic material layer comprising the above compound may be used as a hole injection layer or hole transport layer. Additionally, the organic material layer may be used as a light emitting layer where holes and electrons are recombined to accomplish light emission.
- the compound according to the present invention can perform at least one function selected from the group consisting of hole injection, hole transport and light emission.
- the layer comprising the above compound in an organic light emitting device can serve as at least one selected from the group consisting of a hole injection layer, hole transport layer and a light emitting layer. Additionally, the layer comprising the above compound can be used as a hole injection/hole transport layer, hole injection/hole transport/light emitting layer, etc.
- the compound may accept and transport holes stably and safely by virtue of the aryl group of the carbazole group or the aryl group bonded to the carbazole group as a substituent and the carbazole group itself.
- the substituent bonded to the carbazole group is derived from an amine group. Such substituents maintain the movement of holes and the structure of the compound according to the present invention in a stable state, while not disturbing the flow of holes. Therefore, the organic light emitting device comprising the compound shows excellent stability and improved lifespan.
- R1-R10 may represent any other substituents than the groups as defined above, as long as the compound having substituents corresponding to Rl-RlO can perform a desired function as an organic material layer in an organic light emitting device.
- R1-R10 represent alkyl groups or alkyl-substituted substituents
- there is no limitation in the length of each alkyl group because the length of an alkyl group included in the compound does not affect the conjugation length of the compound, it has no direct effect on the wavelength of the compound or on the characteristics of a device.
- an alkyl group may affect the selection of a method of applying the compound to an organic light emitting device, for example, a vacuum deposition method or a solution coating method. Therefore, there is no particular limitation in length of alkyl groups that may be included in the compound represented by the above formulae.
- the aromatic compound include monocyclic aromatic rings such as phenyl, biphenyl, terphenyl, etc., and multicyclic aromatic rings such as naphthyl, anthracenyl, pyrenyl, perylenyl, etc.
- heteroaromatic compound examples include thiophene, furan, pyrrole, imidazole, thiazole, oxazole, oxadiazole, thiadiazole, triazole, pyridyl, pyridazyl, pyrazine, quinoline, isoquinoline, etc.
- the aliphatic hydrocarbon having 1-20 carbon atoms includes both linear aliphatic hydrocarbons and branched aliphatic hydrocarbons.
- hydrocarbons include alkyl groups such as methyl, ethyl, n-propyl, iso-propyl, n-butyl, sec-butyl, iso-butyl, tert-butyl, pentyl, hexyl, etc.; alkenyl groups having a double bond, such as styryl; and alkynyl groups having a triple bond, such as acetylene.
- Non-limiting examples of the compound according to the present invention include the compounds represented by the following formulae 28-260.
- the organic compounds represented by the above formulae may be synthesized from their starting materials through three to eight processing steps.
- the above compounds can be prepared from carbazole.
- carbazole is treated with a halogen atom or halogenated benzene to form a starting material substituted with halogen or halogenated benzene.
- a compound corresponding to each of A, B, C, D or R1-R10 of the above formula 1 is introduced to the starting material to substitute for the halogen atom of the starting material, thereby forming a desired compound.
- a catalyst may be used.
- There is no particular limitation in the selection of a halogen atom Generally, bromine, chlorine, etc. may be used.
- FIG. 1 shows a preferred embodiment of the organic electroluminescence device.
- the organic compound according to the present invention can be used in at least one organic material layer disposed between an anode and cathode, i.e., at least one layer selected from the group consisting of a hole injection layer, hole transport layer and a light emitting layer. More particularly, the compound can be used in a hole injection layer, hole transport layer, hole injection/hole transport layer, or a hole injection/hole transport/light emitting layer.
- a host material having a large energy gap for example CBP
- an organic phosphorescent material such as phenylpyridine iridium
- CBP organic phosphorescent material
- phenylpyridine iridium an organic phosphorescent material
- a host material for phosphorescence-based luminescence it will be possible to obtain an organic electroluminescence device having significantly improved luminous efficiency and lifespan (C. Adachi, M. A. Baldo, and S. R. Forrest, Applied Physics Letter, 77, 904, 2000.
- the organic electroluminescence devices comprising the compounds represented by the above formulae 1-3 and 28-260 in organic material layers can provide significantly improved efficiency and lifespan and show excellent stability.
- X represents a halogen atom.
- X represents a halogen atom.
- the compounds represented by formulae a-h wherein X is Br are selected as starting materials.
- the starting materials are prepared according to the following Preparation Examples 1 to 8.
- step 2) The product obtained from step 1) (6.16 g, 14.49 mmol), diphenylamine (5.89 g, 34.78 mmol), sodium tert-butoxide (4.18 g, 43.47 mmol), Pd 2 (dba) 3 (0.17 g, 0.29 mmol) and P(t-Bu) 3 (0.06 g, 0.29 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours.
- the reaction mixture was cooled to room temperature, quenched with aqueous NaOH solution, extracted with methylene chloride (MC) and then washed with water many times.
- the resultant product was dried over magnesium sulfate and allowed to evaporate.
- step 2) The product obtained from step 1) (6.16 g, 14.49 mmol), N-phenyl-1-naphthylamine (7.63 g, 34.78 mmol), sodium tert-butoxide (4.18 g, 43.47 mmol), Pd 2 (dba) 3 (0.17 g, 0.29 mmol) and P(t-Bu) 3 (0.06 g, 0.29 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours.
- step 2) The product obtained from step 1) (6.16 g, 14.49 mmol), N-phenyl-2-naphthylamine (7.63 g, 34.78 mmol), sodium tert-butoxide (4.18 g, 43.4 mmol), Pd 2 (dba) 3 (0.17 g, 0.29 mmol) and P(t-Bu) 3 (0.06 g, 0.29 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H 2 0. The organic layer was separated, dried over MgS0 and then concentrated.
- the resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain a compound (6.0 g, 59%) . 3)
- the reaction mixture was cooled to room temperature, quenched with aqueous NaOH solution, extracted with methylene chloride and then washed with water many times.
- the resultant product was dried over magnesium sulfate and allowed to evaporate.
- step 2) The product obtained from step 1) (6.16 g, 14.49 mmol), 3-methyl-diphenylamine (6.37 g, 34.78 mmol), sodium tert-butoxide (4.18 g, 43.47 mmol), Pd 2 (dba) 3 (0.17 g, 0.29 mmol) and P(t-Bu) 3 (0.06 g, 0.29 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H 2 0. The organic layer was separated, dried over MgS0 4 and then concentrated.
- the resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain a compound (6.3 g, 69%). 3)
- the reaction mixture was cooled to room temperature, quenched with aqueous NaOH solution, extracted with methylene chloride and then washed with water many times.
- the resultant product was dried over magnesium sulfate and allowed to evaporate.
- step 2) The product obtained from step 1) (6.16 g, 14.49 mmol), diphenylamine (5.89 g, 34.78 mmol), sodium tert-butoxide (4.18 g, 43.47 mmol), Pd 2 (dba) 3 (0.17 g, 0.29 mmol) and P(t-Bu) 3 (0.06 g, 0.29 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H 2 0. The organic layer was separated, dried over MgS0 4 and then concentrated.
- the resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain a compound (5.88 g, 67%).
- the reaction mixture was cooled to room temperature, quenched with aqueous NaOH solution, extracted with methylene chloride and then washed with water many times.
- the resultant product was dried over magnesium sulfate and allowed to evaporate.
- step 2) The product obtained from step 1) (6.16 g, 14.49 mmol), N-phenyl-2-naphthylamine (7.63 g, 34.78 mmol), sodium tert-butoxide (4.18 g, 43.47 mmol), Pd 2 (dba) 3 (0.17 g, 0.29 mmol) and P(t-Bu) 3 (0.06 g, 0.29 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H 2 0. The organic layer was separated, dried over MgS0 and then concentrated.
- the resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain a compound (6.0 g, 59%).
- the reaction mixture was cooled to room temperature, quenched with aqueous NaOH solution, extracted with methylene chloride and then washed with water many times.
- the resultant product was dried over magnesium sulfate and allowed to evaporate.
- Example 28 Manufacture of organic light emitting device
- a glass substrate on which a thin film of ITO (indium tin oxide) was coated to a thickness of lOOOA was immersed in distilled water containing a detergent to wash the substrate with ultrasonic waves.
- the detergent was a product commercially available from Fisher Co.
- the distilled water has been filtered twice by using a filter commercially available from Millipore Co. After washing ITO for 30 minutes, washing with ultrasonic waves was repeated twice for 10 minutes by using distilled water. After the completion of washing with distilled water, washing with ultrasonic waves was carried out by using isopropyl alcohol, acetone and methanol, in turn.
- the resultant substrate was dried and transferred to a plasma cleaner.
- the substrate was cleaned for 5 minutes by using oxygen plasma and transferred to a vacuum deposition device.
- the compound represented by the above formula 61 was coated to a thickness of 60 ⁇ A by thermal vacuum deposition, thereby forming a hole injection layer.
- NPB as a hole transport material was coated thereon to a thickness of 40 ⁇ A by vacuum deposition.
- Alq3, which serves as light emitting/electron injection/electron transport material was coated thereon to a thickness of 500A by vacuum deposition to complete the formation of a thin film of organic materials.
- lithium fluoride (LiF) and aluminum were sequentially vacuum-deposited to a thickness of 15A and 25O0A, respectively, to form a cathode (second electrode).
- deposition rate of each organic material was maintained at 0.5-1.0 A/sec and deposition rates of lithium fluoride and aluminum were maintained at 0.2 A/sec and 2-3 A/sec, respectively.
- the resultant organic electroluminescence device showed a spectrum having a luminance of 3.87 cd/A under the application of a forward electric field with a drive voltage of 7.17V at a current density of 100 mA/cm 2 .
- Example 29 Manufacture of organic light emitting device
- the compound represented by the above formula 62 was coated to a thickness of 80 ⁇ A by thermal vacuum deposition, thereby forming a hole injection layer.
- NPB as a hole transport material was coated thereon to a thickness of 400A by vacuum deposition.
- Alq3 which serves as light emitting/electron injection/electron transport material was coated thereon to a thickness of 300A by vacuum deposition to complete the formation of a thin film of organic materials.
- the remaining procedure was the same as Example 28.
- the resultant organic electroluminescence device showed a spectrum having a luminance of 3.86 cd/A under the application of a forward electric field with a drive voltage of 7.8V at a current density of 100 mA/cm 2 .
- Example 30 Manufacture of organic light emitting device Example 28 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 63 was used instead of the compound represented by the above formula 61.
- the resultant organic electroluminescence device showed a spectrum having a luminance of 3.8 cd/A under the application of a forward electric field with a drive voltage of 7.8V at a current density of 100 mA/cm 2 .
- Example 28 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 64 was used instead of the compound represented by the above formula 61.
- the resultant organic electroluminescence device showed a spectrum having a luminance of 3.61 cd/A under the application of a forward electric field with a drive voltage of 8.1V at a current density of 100 mA/cm 2 .
- Example 32 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 69 was used instead of the compound represented by the above formula 61.
- the resultant organic electroluminescence device showed a spectrum having a luminance of 3.82 cd/A under the application of a forward electric field with a drive voltage of 8.0V at a current density of 100 mA/cm 2 .
- Example 33 Manufacture of organic light emitting device Example 28 was repeated to manu acture an organic electroluminescence device, except that the compound represented by the above formula 71 was used instead of the compound represented by the above formula 61.
- the resultant organic electroluminescence device showed a spectrum having a luminance of 4.4 cd/A under the application of a forward electric field with a drive voltage of 7.6V at a current density of 100 mA/cm 2 .
- Example 28 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 72 was used instead of the compound represented by the above formula 61.
- the resultant organic electroluminescence device showed a spectrum having a luminance of 4.15 cd/A under the application of a forward electric field with a drive voltage of 7.8V at a current density of 100 mA/cm 2 .
- ⁇ xample 35> Manufacture of organic light emitting device Example 28 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 89 was used instead of the compound represented by the above formula 61.
- the resultant organic electroluminescence device showed a spectrum having a luminance of 4.3 cd/A under the application of a forward electric field with a drive voltage of 7.5 at a current density of 100 mA/cm 2 .
- Example 36 Manufacture of organic light emitting device Example 28 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 95 was used instead of the compound represented by the above formula 61.
- the resultant organic electroluminescence device showed a spectrum having a luminance of 4.5 cd/A under the application of a forward electric field with a drive voltage of 7.3V at a current density of 100 mA/cm 2 .
- Example 28 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 96 was used instead of the compound represented by the above formula 61.
- the resultant organic electroluminescence device showed a spectrum having a luminance of 4.4 cd/A under the application of a forward electric field with a drive voltage of 7.2V at a current density of 100 mA/cm 2 .
- Example 38 Manufacture of organic light emitting device Example 28 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 113 was used instead of the compound represented by the above formula 61.
- the resultant organic electroluminescence device showed a spectrum having a luminance of 4.2 cd/A under the application of a forward electric field with a drive voltage of 7.7V at a current density of 100 mA/cm 2 .
- ⁇ xample 39> Manufacture of organic light emitting device Example 28 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 114 was used instead- of the compound represented by the above formula 61.
- the resultant organic electroluminescence device showed a spectrum having a luminance of 4.1 cd/A under the application of a forward electric field with a drive voltage of 7.6V at a current density of 100 mA/cm 2 .
- Example 28 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 120 was used instead of the compound represented by the above formula 61.
- the resultant organic electroluminescence device showed a spectrum having a luminance of 3.98 cd/A under the application of a forward electric field with a drive voltage of 7.8V at a current density of 100 mA/cm 2 .
- Example 41 Manufacture of organic light emitting device On the ITO transparent electrode prepared as described in Example 28, the compound represented by the above formula 192 was coated to a thickness of 800A by thermal vacuum deposition, thereby forming a hole injection layer.
- NPB as a hole transport material was coated thereon to a thickness of 300A by vacuum deposition.
- Alq3 which serves as light emitting/electron injection/electron transport material was coated thereon to a thickness of 30 ⁇ A by vacuum deposition to complete the formation of a thin film of organic materials.
- the remaining procedure was the same as Example 28.
- the resultant organic electroluminescence device showed a spectrum having a luminance of 3.7 cd/A under the application of a forward electric field with a drive voltage of 6.7V at a current density of 100 mA/cm 2 .
- Example 41 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 193 was used instead of the compound represented by the above formula 192.
- the resultant organic electroluminescence device showed a spectrum having a luminance of 3.6 cd/A under the application of a forward electric field with a drive voltage of 6.9V at a current density of 100 mA/cm 2 .
- Example 43 Manufacture of organic light emitting device Example 41 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 194 was used instead of the compound represented by the; above formula 192.
- the resultant organic electroluminescence device showed a spectrum having a luminance of 3.5 cd/A under the application of a forward electric field with a drive voltage of 6.8V at a current density of 100 mA/cm 2 .
- Example 44 Manufacture of organic light emitting device Example 41 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 197 was used instead of the compound represented by the above formula 192.
- the resultant organic electroluminescence device showed a spectrum having a luminance of 3.9 cd/A under the application of a forward electric field with a drive voltage of 6.9V at a current density of 100 mA/cm 2 .
- Example 41 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 218 was used instead of the compound represented by the above formula 192.
- the resultant organic electroluminescence device showed a spectrum having a luminance of 3.8 cd/A under the application of a forward electric field with a drive voltage of 6.8V at a current density of 100 mA/cm 2 .
- ⁇ xample 46> Manufacture of organic light emitting device Example 41 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 219 was used instead of the compound represented by the above formula 192.
- the resultant organic electroluminescence device showed a spectrum having a luminance of 3.6 cd/A under the application of a forward electric field with a drive voltage of 6.8V at a current density of 100 mA/cm 2 .
- Example 47 Manufacture of organic light emitting device Example 41 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 252 was used instead of the compound represented by the above formula 192.
- the resultant organic electroluminescence device showed a spectrum having a luminance of 3.2 cd/A under the application of a forward electric field with a drive voltage of 6.88V at a current density of 100 mA/cm 2 .
- the organic electroluminescence device using the compound according to the present invention as a hole injection material can provide excellent electroluminescence effect as demonstrated by a luminance of 3.2-4.5 cd/A under a forward electric field of about 6.88V at a current density of 100 mA/cm 2 .
- the compound according to the present invention is used as hole injection material in an organic electroluminescence device comprising NPB as hole transport material and Alq3 as light emitting/electron injection/electron transport material, it is possible to improve electroluminescence effect significantly compared to conventional devices.
- novel compounds according to the present invention can realize improvements in luminous efficiency and lifespan, when they are used in organic compound layers of an organic electroluminescence (EL) device, which is one of light emitting devices. Therefore, the compound according to the present invention can be advantageously used in the field of electric devices including organic light emitting devices.
- EL organic electroluminescence
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Abstract
The present invention relates to a novel compound that can significantly improve the lifespan, efficiency and thermal stability of an organic light emitting device, and to an organic electroluminescence device or light emitting device comprising the compound in an organic compound layer is also disclosed.
Description
NEW MATERIALS FOR INJECTING OR TRANSPORTING HOLES AND ORGANIC ELECTROLUMINESCENCE DEVICES USING THE SAME
Technical Field The present invention relates to a novel compound that can greatly improve lifespan, efficiency and thermal stability of organic light emitting devices, and to an organic light emitting device comprising the same compound in an organic compound layer.
Background Art In the era of advanced information technology of the 21st century, a great deal of information should be obtained promptly with ease, and thus an importance of the high performance flat panel display for multimedia increases. Although liquid crystal displays (LCDs) have played the main part of flat panel displays up to now, many attempts are made to develop novel flat panel displays that are cost-efficient, show excellent performance and are differentiated from liquid crystal displays all over the world. Organic electroluminescence (EL) devices or organic light emitting devices that are expected to play an important role as advanced flat panel displays have advantages of lower drive voltage, higher response rate, higher efficiency and wider view angle, compared to liquid crystal displays. In addition, because displays using organic electroluminescence phenomenon permit a total module thickness of 2 mm or less and can be manufactured on plastic substrates having a thickness of 0.3 mm or less, it is possible to meet the trend of thinning and downsizing of displays. Moreover, organic electroluminescence displays have an
additional advantage in that they are produced at a lower cost compared to liquid crystal displays. Organic light emitting devices are based on the mechanism wherein electrons and holes injected to an organic film formed of organic compounds through an anode and a cathode form exitons when they are recombined and then light having a certain wavelength is emitted from the exitons. In 1965, Pope et al . found electroluminescence in an anthracene single crystal for the first time. Following this, in 1987, Tang et al . in Kodak Co. found that an organic light emitting device formed of organic materials with a structure having separate functional laminated layers, i.e., a hole transport layer and light emitting layer laminated to each other, can provide a high luminance of 1000 cd/m2 or higher even under a low voltage of 10V or less. After those findings, organic light emitting devices has been a matter of great interest in the field of display technology (Tang, C.W.; Vanslyke, S. A. Appl . Phys . Lett . 1987, 51 , 913). Such organic light emitting devices are classified into those using fluorescence and those using phosphorescence capable of providing a high efficiency of up to three times of the fluorescence- based efficiency. Alternatively, such organic light emitting devices may be classified according to molecular weights of the organic materials forming organic light emitting devices, i.e., those prepared by a low-molecular weight method wherein a device is formed by using a vacuum sublimation process and those prepared by a high-molecular weight method wherein a device is formed by using solution processes such as a spin coating, ink jet printing or roll coating process.
As shown in FIG. 1, a conventional organic light emitting device includes an anode, a hole injection layer that accepts holes from the anode, a hole transport layer that transports holes, a light emitting layer in which holes and electrons are recombined to emit light, an electron transport layer that accepts electrons from a cathode and transport them to the light emitting layer, and a cathode. The above thin film layers are formed by a vacuum deposition process. The reason for manufacturing organic light emitting devices having a multilayered thin film structure is as follows. It is possible to transport holes and electrons to a light emitting layer more efficiently when a suitable hole transport layer and electron transport layer are used, because the moving rate of holes is significantly higher than that of electrons in organic materials. Additionally, it is possible to increase luminous efficiency when hole density is balanced with electron density in a light emitting layer. Hereinafter, a conventional organic light emitting device will be explained referring to FIG. 1. A substrate 1 is the support for an organic light emitting device and may be formed of a silicone wafer, quartz or glass plate, metal plate, plastic film or sheet, etc. Preferably, glass plates or transparent plates made of synthetic resins such as polyester, polymethacrylate or polysulfone are used. A first electrode (anode) 2 is disposed on the substrate 1. The anode serves to inject holes to a hole injection layer 3 and may be formed of metals such as aluminum, gold, silver, nickel, palladium or platinum, metal oxides such as indium-tin oxides or indium-zinc
oxides, halogenated metals, carbon black, or conductive polymers such as poly (3-methylthiophene) , polypyrrole or polyaniline. The hole injection layer 3 is disposed on the anode 2. Materials used in the hole injection layer have to provide high efficiency of hole injection from the anode and have to transport the injected holes efficiently. In this regard, the materials should have low ionization potential, high transparency to visible light and excellent stability to holes. Materials for the hole injection layer include compounds that have excellent thermal stability while maintaining a stable interface with the anode. Typical examples of the materials include copper phthalocyanine (CuPc) , which is a porphyrin-copper complex disclosed in US Patent No. 4,356,429 by Kodak, Co. Because CuPc is the most stable compound for use in a hole injection layer, it has been used widely. However, it shows an absorption band at the blue and red zones, and thus has problems when manufacturing full-color display devices. Recently, starburst-like aromatic aryl amine compounds having no absorption band at the blue zone are known (US Patent No. 5,256,945 and Japanese Laid-Open Patent No. 1999-219788, and see the following formulae 4-12) . Particularly, among the starburst-like amines having no absorption band at the blue zone, compounds represented by the following formulae 8-12 having a glass transition temperature of 100 °C or higher and excellent stability are used.
formula 5 formula 6
Recently, many hole injection materials having a higher glass transition temperature and more improved thermal stability have been reported. Most of them are compounds derived from NPB of Kodak, Co. and are represented by the following formulae 13-17 (see, Japanese Laid-Open Patent No. Hei9-301934 and US Patent Nos. 6,334,283 and 6,541,129).
Additionally, Japanese Laid-Open Patent No. 2003- 238501 discloses aromatic oligoamine derivatives having at least five nitrogen atoms in one molecule (formulae 18 and 19) .
< K > > ϊ w Λ / » // formula 19
Further, more recently, Japanese Laid-Open Patent
No. 2003-317966 and US Patent No. 6,660,410 disclose a carbazole group-containing material (formula 20) , which is specifically used as host forming a light emitting layer in an organic light emitting device using phosphorescence and is claimed to improve the lifespan of an organic light emitting device compared to conventionally known CBP (carbazole biphenyl) . Other compounds used in a hole injection layer are represented by the following formulae 21-27.
A hole transport layer 4 is disposed on the hole injection layer 3. The hole transport layer serves to accept holes from the hole injection layer and transport them to an organic light emitting layer 5 disposed thereon. The hole transport layer has high hole transportability and stability to holes. It also serves as a barrier to protect electrons. In addition to the above-mentioned basic requirements, when it is used in display devices for cars, for example, it is preferable that the materials for a hole transport layer have an improved heat resistance and a glass transition temperature (Tg) of 80°C or higher. Materials satisfying such requirements include NPB, spyro-arylamine compounds, perylene-arylamine compounds, azacycloheptatriene compounds, bis (diphenylvinylphenyl) anthracene, silicon germanium oxide compounds, silicon- containing arylamine compounds, or the like. Meanwhile, as an important organic single molecules for a hole transport layer, there is arylamine compounds having high hole transport rate and excellent electrical stability. In order to improve thermal stability of arylamine compounds, hole transport
materials into which a naphthyl substituent or spyro group is introduced are reported (see, US Patent Nos. 5,554,459 and 5,840,217). In the beginning, N,N'- diphenyl-N,N' -bis (3-methylphenyl) -1, 1' -diphenyl-4, 4' - diamine (TPD) is frequently used as organic hole transport material. However, because TPD is unstable at a temperature of 60 °C or higher, N-naphthyl-N-phenyl- 1, 1' -diphenyl-4, 4' -diamine (NPD) based materials or amine compounds substituted with a greater number of aromatic groups that have a higher glass transition temperature are used at the present time. Particularly, organic single molecules for use in a hole transport layer should have high hole transport rate. Additionally, because a hole transport layer is in contact with a light emitting layer and forms an interface therebetween, organic single materials for a hole transport layer should have an adequate ionization potential value of between that of a hole injection layer and that of a light emitting layer so as to inhibit the generation of exitons at the interface between hole transport layer and light emitting layer. Further, the organic single materials for a hole transport layer are required to control the electrons transported from the light emitting layer. An organic light emitting layer 5 is disposed on the hole transport layer . The organic light emitting layer, which serves to emit lights by the recombination of holes and electrons injected from the anode and cathode, respectively, is formed of materials having high quantum efficiency. Organic single molecules for use in a light emitting layer where light emission is accomplished by
the recombination of holes and electrons are classified functionally into host materials and guest materials. In general, host materials or guest materials can accomplish light emission when used alone. However, host materials are doped with guest materials in order to solve the problems of low efficiency and luminance and the problem of self-packing of the same molecules that causes the excimer characteristics to come out in addition to the unique characteristics of each molecule. More particularly, as green light emitting layer, 8-hydroxyquinoline aluminum salt (Alq3) is uniquely used and may be doped with high-quantum efficiency materials such as quinacridone or C545t so as to increase luminous efficiency. Organic materials for a blue light emitting layer have problems in that they have low melting points and low luminous stability at the initial time and that they have poor lifespan, compared to Alq3 as green light emitting material. Additionally, because most materials for a blue light emitting layer represent a light blue color rather than pure blue color, they are not suitable for full-color version displays, and so, they are also doped with perylene or distryl amines (DSA) to increase luminous efficiency. Typical organic materials for a blue light emitting layer include aromatic hydrocarbons, spyro-type compounds, aluminum-containing organometallic compounds, heterocyclic compounds having an imidazole group, fused aromatic compounds, as disclosed in US Patent Nos. 5,516,577, 5,366,811, 5,840,217, 5,150,006 and 5,645,948. Meanwhile, in the case of a red light emitting layer, a large amount of green light emitting material doped with a small amount of red light emitting material is used due to the characteristically narrow
band gap of red light emission. However, such materials have structural problems disturbing the improvement of lifespan. An electron transport layer 6 is disposed on the organic light emitting layer 5. In the electron transport layer 6, such materials as having high electron injection efficiency from a cathode 7 (a second electrode) and capable of transporting the injected electrons efficiently are used. For satisfying this, the materials should have high electron affinity and electron moving rate and excellent stability to electrons. Materials that meet the above requirements include: aromatic compounds such as tetraphenylbutadiene (Japanese Laid-Open Patent No. Sho57-51781) , metal complexes such as 8-hydroxyquinoline aluminum (Japanese Laid-Open Patent No. Sho59-194393) , metal complexes of 10-hydroxybenzo [h] quinoline (Japanese Laid-Open Patent No. Hei6-322362) , cyclopentadiene derivatives (Japanese Laid-Open Patent No. Hei2-289675) , bisstyrylbenzene derivatives (Japanese Laid-Open Patent Nos. Heil-245087 and Hei2-222484) , perylene derivatives (Japanese Laid- Open Patent Nos. Hei2-189890 and Hei3-791) , p-phenylene derivatives (Japanese Laid-Open Patent Nos. Hei3-33183 and Heill-345686) , oxazole derivatives, or the like. Additionally, preferred organic single molecules for use in an electron transport layer include organometal complexes having relatively high stability to electrons and high electron moving rate. Particularly, it is reported that Alq3 is the most preferred, because it has excellent stability and high electron affinity. In addition to the above-mentioned materials, other electron transport materials known to
one skilled in the art include Flavon or silol series available from Chisso Corporation. There is no especially preferred candidate other than the above materials for use in the electron transport layer. Generally, electron transport materials are used in the form of a mixture with metals for use in cathodes. Otherwise, inorganic materials such as lithium fluoride (LiF) may be used. The cathode 7 serves to inject electrons to the organic light emitting layer 5. As materials for the cathode, the materials used in the anode 2 may be used. However, it is preferable to use metals having low work function in order to inject electrons more efficiently. Particular examples of the metals include lithium, cesium, sodium, tin, magnesium, indium, calcium, aluminum, etc., and alloys thereof. However, the organic electroluminescence display device using organic single molecules suitable for each of the layers forming the device generally has short life span and has problems that it provides poor shelf durability and reliability. It is thought that such problems result from physical, chemical, photochemical and electrochemical changes in organic materials, oxidation of cathode, interlayer separation, and melting, crystallization and pyrolysis of organic compounds .
Brief Description of the Drawings FIG. 1 is a sectional view showing the structure of a conventional organic electroluminescence device.
<Brief description of indication numbers>
substrate anode hole injection layer hole transport layer organic light emitting layer electron transport layer cathode
Disclosure of the Invention As described above, conventional hole injection materials including organometal complexes such as CuPC, arylamine compounds and carbazole group-containing materials have problems in that they have a difficulty in realizing full color and show poor stability. The present inventors have synthesized novel organic compounds containing a carbazole group, represented by the following formula 1. And They have found that the above novel compounds can provide significantly improved efficiency, lifespan and thermal stability of an organic light emitting device, when used as hole injection and transport materials. The present invention is based on such findings. As described above, it is possible to realize desired color in an organic electroluminescence device by modifying the structure of a suitable organic single molecule. In this regard, various high-efficiency organic electroluminescence devices are provided by using host-guest systems. However, such devices show insufficient luminance characteristics, lifespan and durability for practical use. Therefore, the present invention has been made in view of the above-mentioned problems. It is an object of the present invention to
provide a novel material for hole injection and hole transport layer, which can improve luminous efficiency, stability and lifespan of an organic electroluminescence device, and to provide an organic electroluminescence device using the same material. It is another object of the present invention to provide a material having high glass transition temperature, excellent thermal stability and sublimation property needed for vacuum vapor deposition processes. According to an aspect of the present invention, there are provided an organic compound represented by the following formula 1 and an organic electroluminescence device comprising the same compound in an organic compound layer:
[formula 2b]
[formula 2c]
More preferably, the compound represented by the above formula 1 may be a compound represented by any one formula selected from the following formulae 3a-3n: [formula 3a]
[formula 3c]
[formula 3d]
[formula 3e]
[formula 3f]
[formula 3h]
[formula 3i]
[formula 3j]
[formula 3k]
In the above formulae 2a—2e and 3a-3n, each of Rl- R8 is the same as defined with regard to the above formula 1. Hereinafter, the present invention will be described in more detail. The organic compounds represented by the formula of 1, 2 or 3 are capable of serving as hole injection and hole transport materials, and thus can be used in at least one layer selected from, a hole injection layer, hole transport layer and a light emitting layer in an organic light emitting device.
Particularly, each of the compounds comprises a carbazole group and accepts and transports holes with ease. It is thought that such functions result from the cyclic structure present in the carbazole group and the presence of an aryl group bonded to the carbazole group. Therefore, an organic material layer comprising the above compound may be used as a hole injection layer or hole transport layer. Additionally, the organic material layer may be used as a light emitting layer where holes and electrons are recombined to accomplish light emission. In other words, the compound according to the present invention can perform at least one function selected from the group consisting of hole injection, hole transport and light emission. Similarly, the layer comprising the above compound in an organic light emitting device can serve as at least one selected from the group consisting of a hole injection layer, hole transport layer and a light emitting layer. Additionally, the layer comprising the above compound can be used as a hole injection/hole transport layer, hole injection/hole transport/light emitting layer, etc. More particularly, it is thought that the compound may accept and transport holes stably and safely by virtue of the aryl group of the carbazole group or the aryl group bonded to the carbazole group as a substituent and the carbazole group itself. In addition, the substituent bonded to the carbazole group is derived from an amine group. Such substituents maintain the movement of holes and the structure of the compound according to the present invention in a stable state, while not disturbing the flow of holes. Therefore, the
organic light emitting device comprising the compound shows excellent stability and improved lifespan. In addition, the substituents of the compound according to the present invention, i.e., R1-R10 may represent any other substituents than the groups as defined above, as long as the compound having substituents corresponding to Rl-RlO can perform a desired function as an organic material layer in an organic light emitting device. For example, when R1-R10 represent alkyl groups or alkyl-substituted substituents, there is no limitation in the length of each alkyl group. Because the length of an alkyl group included in the compound does not affect the conjugation length of the compound, it has no direct effect on the wavelength of the compound or on the characteristics of a device. However, the length of an alkyl group may affect the selection of a method of applying the compound to an organic light emitting device, for example, a vacuum deposition method or a solution coating method. Therefore, there is no particular limitation in length of alkyl groups that may be included in the compound represented by the above formulae. With regard to R1-R10 in the above formulae, particular examples of the aromatic compound include monocyclic aromatic rings such as phenyl, biphenyl, terphenyl, etc., and multicyclic aromatic rings such as naphthyl, anthracenyl, pyrenyl, perylenyl, etc. Particular examples of the heteroaromatic compound include thiophene, furan, pyrrole, imidazole, thiazole, oxazole, oxadiazole, thiadiazole, triazole, pyridyl, pyridazyl, pyrazine, quinoline, isoquinoline, etc.
The aliphatic hydrocarbon having 1-20 carbon atoms includes both linear aliphatic hydrocarbons and branched aliphatic hydrocarbons. Particular examples of such hydrocarbons include alkyl groups such as methyl, ethyl, n-propyl, iso-propyl, n-butyl, sec-butyl, iso-butyl, tert-butyl, pentyl, hexyl, etc.; alkenyl groups having a double bond, such as styryl; and alkynyl groups having a triple bond, such as acetylene. Non-limiting examples of the compound according to the present invention include the compounds represented by the following formulae 28-260.
Best Mode for Carrying Out the Invention Hereinafter, synthetic processes of the organic compound represented by the above formula 1 and manufacture of organic electroluminescence devices using the same will be described in more detail through Examples and Comparative Examples. It is to be understood that the following examples are illustrative only and the present invention is not limited thereto. In order to prepare the compound represented by the above formula 1, the compounds represented by the following formulae a-h may be used as starting materials .
[formula c] [formula
[formula f] [formula g]
In the above formulae a-h, X represents a halogen atom. There is no particular limitation in the selection of a halogen atom. In the following examples, the compounds represented by formulae a-h wherein X is Br are selected as starting materials. The starting materials are prepared according to the following Preparation Examples 1 to 8. <Preparation Example 1> Preparation of the starting material represented by formula a Carbazole (5.00 g, 29,9 mmol), l-bromo-4- iodobenzene (9.30 g, 32.9 mmol), K2C03 (16.5 g, 120
mmol), Cu (3.80 g, 59.8 mmol) and 18-crown-6 (0.40 g, 1.49 mmol) were refluxed in 50 ml of o-dichlorobenzene for 15 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and the precipitate was filtered off. The filtrate was washed with water three times, dried over MgS04 and concentrated under reduced pressure. The reaction mixture was purified by column chromatography to obtain the compound represented by formula a as starting material (5.85 g, 61%). 1H NMR (300 MHz, CDC13) 8.13-8.11(d, 2H) , 7.71- 7.69(d, 2H) , 7.44-7.21(m, 8H) ; MS [M+H] 322. <Preparation Example 2> Preparation of the starting- material represented by formula b Carbazole (5.00 g, 29,9 mmol), l-bromo-3- iodobenzene (9.30 g, 32.9 mmol), K2C03 (16.5 g, 120 mmol), Cu (3.80 g, 59.8 mmol) and 18-crown-6 (0.40 g, 1.49 mmol) were refluxed in 50 ml of o-dichlorobenzene for 15 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and the precipitate was filtered off. The filtrate was washed with water three times, dried over MgS04 and concentrated under reduced pressure. The reaction mixture was purified by column chromatography to obtain the compound represented by formula b as starting material (5.85 g, 61%) . MS [M+H] 322. <Preparation Example 3> Preparation of the starting- material represented by formula c The starting material represented by formula a (1.50 g, 4.66 mmol) was dissolved in dimethylformaide (DMF, 20 ml) and N-bromosuccinimide (NBS, 1.82 g, 10.2 mmol) was added thereto. The reaction mixture was reacted at 50-60°C for 2 hours and water (15 ml) was
added thereto. The resultant precipitate was filtered, washed with water and then recrystallized in dichloromethane/n-hexane to obtain the compound represented by formula c as starting material (1.93 g, 86%). XH NMR(300 MHz, CDC13) 8.17 (s, 2H) , 7.75-7.74 (d, 2H), 7.51-7.48(d, 2H) , 7.38-7.35(d, 2H) , 7.22-7.19 (d, 2H) ; MS [M+H] 478. <Prepaχ-ation Example 4> Preparation of the starting material represented by formula d The starting material represented by formula b (1.50 g, 4.66 mmol) was dissolved in dimethylformaide (DMF, 20 ml) and N-bromosuccinimide (NBS, 1.82 g, 10.2 mmol) was added thereto. The reaction mixture was reacted at 50-60°C for 2 hours and water (15 ml) was added thereto. The resultant precipitate was filtered, washed with water and then recrystallized in dichloromethane/n-hexane to obtain the compound represented by formula d as starting material (1.93 g, 86%) . MS[M+H] 478. <Prepazration Example 5> Preparation of the starting material represented by formula e 2, 5-dibromonitrobenzene (12.0 g, 42.7 mmol) was dissolved in dimethylformamide (DMF, 80 ml), Cu (6.0 g, 93.94 mmol) was added thereto, and then the reaction mixture was reacted at 120 °C for 3 hours. The reaction mixture was cooled to room temperature, the insoluble material was filtered off and the filtrate was concentrated. The resultant product was recrystallized in ethanol to obtain 4, 4' -dibromo-2, 2 ' -dinitrobiphenyl (10.2 g, 60%). MS [M+] 354. 4, 4' -dibromo-2, 2' -dinitrobiphenyl (6.1 g, 15.17 mmol) was stirred in HCI 30 ml/EtOH 75 ml, Sn powder
(7.2 g, 60.68 mmol) was added thereto, and then the reaction mixture was refluxed for 24 hours. Next, the reaction mixture was cooled to room temperature, neutralized with 10% NaOH solution, and then recrystallized in ethanol to obtain 4, 4' -dibromo-2, 2' - dia inobiphenyl (3.5 g, 67%). MS [M+H] 341. 4, 4' -dibromo-2, 2' -diaminobiphenyl (3.5 g, 10.23 mmol) was dissolved in phosphoric acid and heated at
190 °C for 24 hours. The reaction mixture was cooled to room temperature and then NaHC03 (aq) was gradually added thereto to form a solid. Then, the solid was filtered to obtain 2, 7-dibromocarbazole (2.2 g, 66%), the compound represented by formula e. MS[M+] 323. <Preparation Example 6> Preparation of the starting material represented by formula f 3, 6-dibromocarbazole (1.63 g, 5.00 mmol), 4- bromophenylboronic acid (2.95 g, 15.0 mmol), 2M potassium carbonate solution (10 ml) and tetrakis (triphenylphosphine) palladium (29.0 mg, 0.25 mmol) were added to 100 ml of THF. The reaction mixture was stirred under reflux for about 24 hours and then cooled to room temperature. Next, the reaction mixture was introduced into toluene and brine and the toluene layer was separated. The separated layer was dried over MgS0, filtered and concentrated. Then, the reaction mixture was purified by column chromatography to obtain the compound represented by formula f as starting material (1.15 g, 48%). 1H NMR(300 MHz, CDC13) 10.1 (s, 1H) , 7.77(s, 2H) , 7.49-7.46(m, 6H) , 7.37(d, 4H) , 7.30(d, 2H) ; MS [M+H] 476. <Preparation Example 7> Preparation of the starting material represented by formula g
The compound represented by formula f (1.43 g, 3.00 mmol), l-bromo-4-iodobenzene (1.87 g, 6.60 mmol), K2C03 (3.32 g, 24 mmol) r Cu (0.76 g, 12.0 mmol) and 18- crown-6 (0.08 g, 0.30 mmol) were refluxed in 10 ml of o- dichlorobenzene for 15 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and the precipitate was filtered off. The filtrate was washed with water three times, dried over MgS0 and concentrated under reduced pressure. The reaction mixture was purified by column chromatography to obtain the compound represented by formula g as starting material (1.02 g, 54%). XH NMR (300 MHz, CDC13) 7.77(s, 2H), 7.49-7.40(m, 8H) , 7.37(d, 4H) , 7.30(d, 2H) , 7.20 (d, 2H) ; MS [M+H] 630. <Preparation Example 8> Preparation of the starting material represented by formula h The compound represented by formula c (2.40 g, 5.00 mmol), 4-bromophenylboronic acid (3.94 g, 20.0 mmol) , 2M potassium carbonate solution (20 ml) and tetrakis (triphenylphosphine) palladium (58.0 mg, 0.50 mmol) were added to 100 ml of THF. The reaction mixture was stirred under reflux for about 24 hours and then cooled to room temperature. Next, the reaction mixture was introduced into toluene and brine and the toluene layer was separated. The separated layer was dried over MgS0 , filtered and concentrated. Then, the reaction mixture was purified by column chromatography to obtain the compound represented by formula h as starting material (2.09 g, 59%). 1H NMR (300 MHz, CDC13) 1 . 11 { 3 , 2H), 7.50-7.46(m, 10H) , 7.37 (m, 6H) , 7.30 (m, 4H) ; MS [M+H] 706. <Ξxample 1> Preparation of the compound
represented by formula 61 The compound represented by formula c (1.00 g, 2.08 mmol), diphenylamine (1.16 g, 6.86 mmol), Pd (dba)3 (0.125 g, 0.13 mmol), P(t-Bu)3 (0.04 g, 0.2 mmol) and sodium tert-butoxide (1.80 g, 18.7 mmol) were added to xylene (40 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 61 (1.16 g, 75%). XH NMR (300 MHz, CDC13) 6.78(d, 2H) , 6.96(m, 14H) , 7.12 (m, 6H) , 7.25(s, 2H) , 7.5-7.51 (m, 14H) , 7.65(d, 2H) ; MS [M+H] 745. <Example 2> Preparation of the compound represented by formula 62 The compound represented by formula c (1.00 g, 2.08 mmol), N-phenyl-1-naphthylamine (1.50 g, 6.86 mmol), Pd2(dba)3 (0.125 g, 0.13 mmol), P(t-Bu)3 (0.04 g, 0.2 mmol) and sodium tert-butoxide (1.80 g, 18.7 mmol) were added to xylene (40 ml) and the mixture was refluxed for about 3 hours . After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 62 (1.46 g, 79%). 1H NMR (300 MHz, CDC13) 6.78 (d, 2H) , 6.96-7.12 (m, 14H) , 7.25(8, 2H) , 7.5-7.51 (m, 8H) ,
7 . 65-7 . 66 (m, 8H ) , 7 . 80-7 . 81 (m, 6H ) , 8 . 11-8 . 12 (m, 6H ) ; MS [M+H] 895 . <Example 3> Preparation of the compound represented by formula 63 The compound represented by formula c (1.00 g, 2.08 mmol), N-phenyl-2-naphthylamine (1.50 g, 6.86 mmol), Pd2(dba)3 (0.125 g, 0.13 mmol), P(t-Bu)3 (0.04 g, 0.2 mmol) and sodium tert-butoxide (1.80 g, 18.7 mmol) were added to xylene (40 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H0. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 63 (1.21 g, 65%). λR NMR (300 MHz, CDC13) 6.78 (d, 2H), 6.96-7.0 (m, 8H) , 7.12 (m, 3H) , 7.25-7.29(m, 8H) , 7.51-7.73 (m, 16H) , 7.94-8.05(m, 9H) ; MS [M+H] 895. <Ξxample 4> Preparation of the compound represented by formula 64 The compound represented by formula c (1.00 g, 2.08 mmol), N-phenyl- (9-phenanthrenyl) amine (1.85 g, 6.86 mmol), Pd2(dba)3 (0.125 g, 0.13 mmol), P(t-Bu)3 (0.04 g, 0.2 mmol) and sodium tert-butoxide (1.80 g, 18.7 mmol) were added to xylene (40 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl
acetate/n-hexane to obtain the compound represented by formula 64 (0.93 g, 43%). XR NMR (300 MHz, CDC13) 6.78 (d, 2H) , 6.96-6.97(m, 8H) , 7.12(t, 3H) , 7.25(s, 2H) , 7.41(m, 3H) , 7.5-7.51 (m, 8H) , 7.65(d, 2H) , 8.32-8.38(m, 12H) , 8.62(d, 6H) , 9.43(m, 6H) ; MS [M+H] 1045. <Example 5> Preparation of the compound represented by formula 65 The compound represented by formula c (1.00 g, 2.08 mmol), N-phenyl- (9-anthrenyl) amine (1.85 g, 6.86 mmol), Pd2(dba)3 (0.125 g, 0.13 mmol), P(t-Bu)3 (0.04 g, 0.2 mmol) and sodium tert-butoxide (1.80 g, 18.7 mmol) were added to xylene (40 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 65 (1.24 g, 57%). XH NMR (300 MHz, CDC13) 6.78(d, 2H) , 6.96-6.6.98 (m, 8H) , 7.12(t, 3H) , 7.23(s, 2H), 7.5-7.51 (m, 8H) , 7.65-7.66(m, 7H) , 7.81-7.84(m, 10H), 8.14-8.15 (m, 12H) ; MS [M+H] 1045. <Example 6> Preparation of the compound represented by formula 68 The compound represented by formula c (1.00 g, 2.08 mmol), di- (1-naphthyl) amine (1.85 g, 6.86 mmol), Pd2(dba)3 (0.125 g, 0.13 mmol), P(t-Bu)3 (0.04 g, 0.2 mmol) and sodium tert-butoxide (1.80 g, 18.7 mmol) were added to xylene (40 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and
added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 68 (1.04 g, 48%). 1H NMR (300 MHz, CDC13) 6.78 (d, 2H), 7.0-7.05 (m, 8H) , 7.25(s, 2H) , 7.50-7.66(m, 16H) , 7.80-7.81(m, 12H) , 8.11-8.16 (m, 12H) ; MS [M+H] 1045. <Ξxample 7> Preparation of the compound represented by formula 69 The compound represented by formula c (1.00 g, 2.08 mmol), di- (2-naphthyl) amine (1.85 g, 6.86 mmol), Pd2(dba)3 (0.125 g, 0.13 mmol), P(t-Bu)3 (0.04 g, 0.2 mmol) and sodium tert-butoxide (1.80 g, 18.7 mmol) were added to xylene (40 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 69 (0.89 g, 41%). 1H NMR (300 MHz, CDC13) 6.78 (d, 2H), 7.0(d, 2H) , 7.26-7.29(m, 14H) , 7.5-7.53(m, 16H) , 7.94-8.05(m, 18H) ;MS [M+H] 1045. <Example 8> Preparation of -the compound represented by formula 71 The compound represented by formula c (1.50 g, 3.13 mmol), p,p' -ditolylamine (2.03 g, 10.3 mmol), Pd2(dba)3 (0.19 g, 0.21 mmol), P(t-Bu)3 (0.06 g, 0.31 mmol) and sodium tert-butoxide (1.05 g, 10.96 mmol) were added to xylene (30 ml) and the mixture was refluxed for
about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 71 (1.31 g, 50%). ^H NMR (300 MHz, CDC13) 2.55 (s, 18H), 6.48-6.70(m, 16H) , «5.95-7.01 (m, 14H) , 7.2-7.35(m, 4H) ; MS [M+H] 829. <Ξxample 9> Preparation of the compound represented by formula 72 The compound represented by formula c (1.50 g, 3.13 mmol), m,m' -ditolylamine (1.96 ml, 10.3 mmol), Pd2(dba)3 (0.19 g, 0.21 mmol), P(t-Bu)3 (0.06 g, 0.31 mmol) and sodium tert-buto:xide (1.05 g, 10.96 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 72 (1.55 g, 60%). H NMR (300 MHz, CDC13) 2.55(s, 18H) , 6.48-6.70(m, 16H) , 6.95-7.01 (m, 14H) , 7.2-7.35(m, 4H) ; MS [M+H] 829. <Example 10> Preparation of the compound represented by formula 89 The compound represented by formula c (1.50 g, 3.13 mmol), 3-methyldiphenylamine (1.88 g, 10.3 mmol), Pd2(dba)3 (0.19 g, 0.21 mmol), P(t-Bu)3 (0.06 g, 0.31
mmol) and sodium tert-butoxide (1.05 g, 10.96 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 89 (1.62 g, 66%). MS [M+H] 787. <Ξxample 11> Preparation of the compound represented by formula 95 The compound represented by formula c (1.50 g, 3.13 mmol), N- (3-methylphenyl) -1-naphthylamine (2.40 g, 10.3 mmol), Pd2(dba)3 (0.19 g, 0.21 mmol), P(t-Bu)3 (0.06 g, 0.31 mmol) and sodium tert-butoxide (1.05 g, 10.96 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 95 (1.92 g, 65%). MS [M+H] 937. <Example 12> Preparation of the compound represented by formula 96 The compound represented by formula c (1.50 g, 3.13 mmol), N- (4-methylphenyl) -1-naphthylamine (2.40 g, 10.3 mmol), Pd2(dba)3 (0.19 g, 0.21 mmol), P(t-Bu)3 (0.06 g, 0.31 mmol) and sodium tert-butoxide (1.05 g, 10.96 mmol) were added to xylene (30 ml) and the mixture was
refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed sol tion of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the corαpound represented by formula 96 (1.92 g, 65%). MS [M+H] 937. <Example 13> Preparation of the compound represented by formula 101 The compound represented by formula c (1.50 g, 3.13 mmol), N- (3-methylphenyl) -2-na]ohthylamine (2.40 g, 10.3 mmol), Pd2(dba)3 (0.19 g, 0.21 itimol) , P(t-Bu)3 (0.06 g, 0.31 mmol) and sodium tert-butoxide (1.05 g, 10.96 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed sol tion of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 101 (1.92 g, 65%). MS [M+H] 937. <Example 14> Preparation of the compound represented by formula 102 The compound represented by formula c (1.50 g, 3.13 mmol), N- (4-methylphenyl) -2-naphthylamine (2.40 g, 10.3 mmol), Pd2(dba)3 (0.19 g, 0.21 mmol), P(t-Bu)3 (0.06 g, 0.31 mmol) and sodium tert-butoxide (1.05 g, 10.96 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture
cooled to room
temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 102 (1.92 g, 65%). MS [M+H] 937. <Ξxample 15> Preparation of the compound represented by formula 113 The compound represented by formula d (1.00 g, 2.08 mmol), diphenylamine (1.16 g, 6.86 mmol), Pd2(dba)3 (0.125 g, 0.13 mmol), P(t-Bu)3 (0.04 g, 0.2 mmol) and sodium tert-butoxide (1.80 g, 18.7 mmol) were added to xylene (40 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 113 (1.16 g, 75%). MS [M+H] 745. <Ξxample 16> Preparation of the compound represented by formula 114 The compound represented by formula d (1.00 g, 2.08 mmol), N-phenyl-1-naphthylamine (1.50 g, 6.86 mmol), Pd2(dba)3 (0.125 g, 0.13 mmol), P(t-Bu)3 (0.04 g, 0.2 mmol) and sodium tert-butoxide (1.80 g, 18.7 mmol) were added to xylene (40 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS04 and
then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 114 (1.46 g, 79%). MS [M+H] 895. <Ξxample 17> Preparation of the compound represented by formula 115 The compound represented by formula d (1.00 g, 2.08 mmol), N-phenyl-2-naphthylamine (1.50 g, 6.86 mmol), Pd2(dba)3 (0.125 g, 0.13 mmol), P(t-Bu)3 (0.04 g, 0.2 mmol) and sodium tert-butoxide (1.80 g, 18.7 mmol) were added to xylene (40 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS0 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 115 (1.21 g, 65%). MS [M+H] 895. <Example 18> Preparation of the compound represented by formula 116 The compound represented by formula d (1.50 g, 3.13 mmol), 3-methyldiphenylamine (1.88 g, 10.3 mmol), Pd2(dba)3 (0.19 g, 0.21 mmol), P(t-Bu)3 (0.06 g, 0.31 mmol) and sodium tert-butoxide (1.05 g, 10.96 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl
acetate/n-hexane to obtain the compound represented by formula 116 (1.62 g, 66%). MS [M+H] 787. <Example 19> Preparation of the compound, represented by formula 120 The compound represented by formula d (1.50 g, 3.13 mmol), N- (3-methylphenyl) -1-naphthylamine (2.40 g, 10.3 mmol), Pd2(dba)3 (0.19 g, 0.21 mmol), P(t-Bu)3 (0.06 g, 0.31 mmol) and sodium tert-butoxide (1.05 g, 10.96 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 120 (1.92 g, 65%). MS [M+H] 937. <Example 20> Preparation of the compound represented by formula 121 The compound represented by formula d (1.50 g, 3.13 mmol), N- (3-methylphenyl) -2-naphthylamine (2.40 g, 10.3 mmol), Pd2(dba)3 (0.19 g, 0.21 mmol), P(t-Bu)3 (0.06 g, 0.31 mmol) and sodium tert-butoxide (1.05 g, 10.96 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS0 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 121 (1.92 g, 65%). MS [M+H] 937.
<Example 21> Preparation of the compound represented by formula 192 1) The compound represented by formula e (5.0 g, 15.38 mmol) and di-tert-butyl-dicarbonate (5.04 g, 23.08 mmol) were dissolved in 50 ml of THF and 4- (dimethylamino) pyridine (0.19 g, 1.54 mmol) was added thereto. Then, the reaction mixture was reacted at room temperature for 24 hours. After the completion of the reaction, the reaction mixture was concentrated and recrystallized in ethanol to obtain a product (6.16 g, 94%) . 2) The product obtained from step 1) (6.16 g, 14.49 mmol), diphenylamine (5.89 g, 34.78 mmol), sodium tert-butoxide (4.18 g, 43.47 mmol), Pd2(dba)3 (0.17 g, 0.29 mmol) and P(t-Bu)3 (0.06 g, 0.29 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain a compound (5.88 g, 67%) . 3) The compound obtained from step 2) (5.88 g, 9.77 mmol) was dissolved in trifluoroacetic acid/chloroform = 50 ml/50 ml and the solution was refluxed for 3 hours. The reaction mixture was cooled to room temperature, quenched with aqueous NaOH solution, extracted with methylene chloride (MC) and then washed with water many times. The resultant product was dried over magnesium sulfate and allowed to evaporate. The crude product was purified by column chromatography
(ethyl acetate/hexane = 1/9) to obtain a compound (2.9 g, 59%) . 4) The product obtained from step 3) (2.9 g, 5.78 mmol), 4-bromophenyl-diphenylamine (1.36 g, 4.21 mmol), Pd2(dba)3 (0.05 g, 0.084 mmol) and P(t-Bu)3 (0.017 g, 0.084 mmol) and sodium tert-butoxide (1.21 g, 12.63 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 192 (1.5 g, 49%). MS[M+H] 745. <Example 22> Preparation of the compound represented by formula 193 1) The compound represented by formula e (5.0 g, 15.38 mmol) and di-tert-butyl-dicarbonate (5.04 g, 23.08 mmol) were dissolved in 50 ml of THF and 4- (dimethylamino) pyridine (0.19 g, 1.54 mmol) was added thereto. Then, the reaction mixture was reacted at room temperature for 24 hours. After the completion of the reaction, the reaction mixture was concentrated and recrystallized in ethanol to obtain a product (6.16 g, 94%) . 2) The product obtained from step 1) (6.16 g, 14.49 mmol), N-phenyl-1-naphthylamine (7.63 g, 34.78 mmol), sodium tert-butoxide (4.18 g, 43.47 mmol), Pd2(dba)3 (0.17 g, 0.29 mmol) and P(t-Bu)3 (0.06 g, 0.29 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the
reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS0 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain a compound (6.0 g, 59%). 3) The compound obtained from step 2) (6.0 g, 8.54 mmol) was dissolved in trifluoroacetic acid/chloroform = 50 ml/50 ml and the solution was refluxed for 3 hours. The reaction mixture was cooled to room temperature, quenched with aqueous NaOH solution, extracted with methylene chloride and then washed with water many times. The resultant product was dried over magnesium sulfate and allowed to evaporate. The crude product was purified by column chromatography (ethyl acetate/hexane = 1/9) to obtain a compound (3.8 g, 74%) . 4) The product obtained from step 3) (3.8 g, 6.31 mmol), 4-bromophenyl-N-phenyl-l-naphthylamine (1.57 g, 4.21 mmol), Pd2(dba)3 (0.05 g, 0.084 mmol) and P(t-Bu)3 (0.017 g, 0.084 mmol) and sodium tert-butoxide (1.21 g, 12.63 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgSO-j and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 193 (1.2 g, 32%). MS [M+H] 895. <Example 23> Preparation of the compound represented by formula 194 1) The compound represented by formula e (5.0 g,
15.38 mmol) and di-tert-butyl-dicarbonate (5.04 g, 23.08 mmol) were dissolved in 50 ml of THF and 4- (dimethylamino) pyridine (0.19 g, 1.54 mmol) was added thereto. Then, the reaction mixture was reacted at room temperature for 24 hours. After the completion of the reaction, the reaction mixture was concentrated and recrystallized in ethanol to obtain a product (6.16 g, 94%) . 2) The product obtained from step 1) (6.16 g, 14.49 mmol), N-phenyl-2-naphthylamine (7.63 g, 34.78 mmol), sodium tert-butoxide (4.18 g, 43.4 mmol), Pd2(dba)3 (0.17 g, 0.29 mmol) and P(t-Bu)3 (0.06 g, 0.29 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS0 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain a compound (6.0 g, 59%) . 3) The compound obtained from step 2) (6.0 g, 8.54 mmol) was dissolved in trifluoroacetic acid/chloroform = 50 ml/50 ml and the solution was refluxed for 3 hours. The reaction mixture was cooled to room temperature, quenched with aqueous NaOH solution, extracted with methylene chloride and then washed with water many times. The resultant product was dried over magnesium sulfate and allowed to evaporate. The crude product was purified by column chromatography (ethyl acetate/hexane = 1/9) to obtain a compound (3.8 g, 74%) . 4) The product obtained from step 3) (3.8 g, 6.31 mmol), 4-bromophenyl-N-phenyl-2-naphthylamine (1.57 g,
4.21 mmol), Pd2(dba)3 (0.05 g, 0.084 mmol) and P(t-Bu)3 (0.017 g, 0.084 mmol) and sodium tert-butoxide (1.21 g, 12.63 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 194 (1.2 g, 32%). MS [M+H] 895. <Example 24> Preparation of the compound represented by formula 197 1-) The compound represented by formula e (5.0 g, 15.38 mmol) and di-tert-butyl-dicarbonate (5.04 g, 23.08 mmol) were dissolved in 50 ml of THF and 4- (dimethylamino) pyridine (0.19 g, 1.54 mmol) was added thereto. Then, the reaction mixture was reacted at room temperature for 24 hours. After the completion of the reaction, the reaction mixture was concentrated and recrystallized in ethanol to obtain a product (6.16 g, 94%) . 2) The product obtained from step 1) (6.16 g, 14.49 mmol), 3-methyl-diphenylamine (6.37 g, 34.78 mmol), sodium tert-butoxide (4.18 g, 43.47 mmol), Pd2(dba)3 (0.17 g, 0.29 mmol) and P(t-Bu)3 (0.06 g, 0.29 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by
column chromatography and recrystallized in ethyl acetate/n-hexane to obtain a compound (6.3 g, 69%). 3) The compound obtained from step 2) (6.3 g, 10.0 mmol) was dissolved in trifluoroacetic acid/chloroform = 50 ml/50 ml and the solution was refluxed for 3 hours. The reaction mixture was cooled to room temperature, quenched with aqueous NaOH solution, extracted with methylene chloride and then washed with water many times. The resultant product was dried over magnesium sulfate and allowed to evaporate. The crude product was purified by column chromatography (ethyl acetate/hexane = 1/9) to obtain a compound (3.8 g, 71%). 4) The product obtained from step 3) (3.8 g, 7.17 mmol), 4-bromophenyl- (3-methyl) -diphenylamine (1.42 g, 4.21 mmol), Pd2(dba)3 (0.05 g, 0.084 mmol) and P(t-Bu)3 (0.017 g, 0.084 mmol) and sodium tert-butoxide (1.21 g,
12.63 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS0 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 197 (1.2 g, 36%). MS [M+H] 787. <Example 25> Preparation of the compound represented by formula 218 1) The compound represented by formula e (5.0 g, 15.38 mmol) and di-tert-butyl-dicarbonate (5.04 g, 23.08 mmol) were dissolved in 50 ml of THF and 4- (dimethylamino) pyridine (0.19 g, 1.54 mmol) was added thereto. Then, the reaction mixture was reacted at room
temperature for 24 hours. After the completion of the reaction, the reaction mixture was concentrated and recrystallized in ethanol to obtain a product (6.16 g, 94%) . 2) The product obtained from step 1) (6.16 g, 14.49 mmol), diphenylamine (5.89 g, 34.78 mmol), sodium tert-butoxide (4.18 g, 43.47 mmol), Pd2(dba)3 (0.17 g, 0.29 mmol) and P(t-Bu)3 (0.06 g, 0.29 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS04 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain a compound (5.88 g, 67%). 3) The compound obtained from step 2) (5.88 g, 9.77 mmol) was dissolved in trifluoroacetic acid/chloroform = 50 ml/50 ml and the solution was refluxed for 3 hours. The reaction mixture was cooled to room temperature, quenched with aqueous NaOH solution, extracted with methylene chloride and then washed with water many times. The resultant product was dried over magnesium sulfate and allowed to evaporate. The crude product was purified by column chromatography (ethyl acetate/hexane = 1/9) to obtain a compound (2.9 g, 59%). 4) The product obtained from step 3) (2.9 g, 57.8 mmol), 4-bromophenyl-N-phenyl-l-naphthylamine (1.57 g, 4.21 mmol), Pd2(dba)3 (0.05 g, 0.084 mmol) and P(t-Bu)3 (0.017 g, 0.084 mmol) and sodium tert-butoxide (1.21 g, 12.63 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of
the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS0 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 218 (1.5 g, 49%). MS [M+H] 795. <Example 26> Preparation of the compound represented by formula 219 1) The compound represented by formula e (5.0 g,
15.38 mmol) and di-tert-butyl-dicarbonate (5.04 g, 23.08 mmol) were dissolved in 50 ml of THF and 4- (dimethylamino) pyridine (0.19 g, 1.54 mmol) was added thereto. Then, the reaction mixture was reacted at room temperature for 24 hours. After the completion of the reaction, the reaction mixture was concentrated and recrystallized in ethanol to obtain a product (6.16 g, 94%) . 2) The product obtained from step 1) (6.16 g, 14.49 mmol), N-phenyl-2-naphthylamine (7.63 g, 34.78 mmol), sodium tert-butoxide (4.18 g, 43.47 mmol), Pd2(dba)3 (0.17 g, 0.29 mmol) and P(t-Bu)3 (0.06 g, 0.29 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS0 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain a compound (6.0 g, 59%). 3) The compound obtained from step 2) (6.0 g, 8.54 mmol) was dissolved in trifluoroacetic acid/chloroform =
50 ml/50 ml and the solution was refluxed for 3 hours. The reaction mixture was cooled to room temperature, quenched with aqueous NaOH solution, extracted with methylene chloride and then washed with water many times. The resultant product was dried over magnesium sulfate and allowed to evaporate. The crude product was purified by column chromatography (ethyl acetate/hexane = 1/9) to obtain a compound (3.8 g, 74%). 4) The product obtained from step 3) (3.8 g, 6.31 mmol), 4-bromophenyl-N-phenyl-l-naphthylamine (1.57 g,
4.21 mmol), Pd2(dba)3 (0.05 g, 0.084 mmol) and P(t-Bu)3 (0.017 g, 0.084 mmol) and sodium tert-butoxide (1.21 g,
12.63 mmol) were added to xylene (30 ml) and the mixture was refluxed for about 3 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature and added to a mixed solution of THF and H20. The organic layer was separated, dried over MgS0 and then concentrated. The resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 219 (1.2 g, 32%). MS [M+H] 895. <Example 27> Preparation of the compound represented by formula 252 The compound represented by formula c (1.00 g, 2.08 mmol), triphenylamine-4-boronic acid (1.99 g, 6.87 mmol) , 2M potassium carbonate solution (10 ml) and tetrakis (triphenylphosphine) palladium (0.07 g, 0.06 mmol) were added to 40 ml of THF. The mixture was stirred under reflux for about 24 hours and then cooled to room temperature. The reaction mixture was added to toluene/brine, and then the toluene layer was separated, dried over MgS0 , filtered and concentrated. The
resultant product was purified by column chromatography and recrystallized in ethyl acetate/n-hexane to obtain the compound represented by formula 252 (1.15 g, 55%). 1H NMR (300 MHz, CDC13) 6.76-6.82(m, 18H) , 6.92-6.95(m, 6H) , 7.31-7.35 (m, 12H) , 7.53-7.60 (m, 10H) , 7.76-8.07 (m, 6H) ; MS [M+H] 973. <Example 28> Manufacture of organic light emitting device A glass substrate on which a thin film of ITO (indium tin oxide) was coated to a thickness of lOOOA was immersed in distilled water containing a detergent to wash the substrate with ultrasonic waves. The detergent was a product commercially available from Fisher Co. The distilled water has been filtered twice by using a filter commercially available from Millipore Co. After washing ITO for 30 minutes, washing with ultrasonic waves was repeated twice for 10 minutes by using distilled water. After the completion of washing with distilled water, washing with ultrasonic waves was carried out by using isopropyl alcohol, acetone and methanol, in turn. The resultant substrate was dried and transferred to a plasma cleaner. Then, the substrate was cleaned for 5 minutes by using oxygen plasma and transferred to a vacuum deposition device.' On the ITO transparent electrode (first electrode) prepared as described above, the compound represented by the above formula 61 was coated to a thickness of 60θA by thermal vacuum deposition, thereby forming a hole injection layer. Next, NPB as a hole transport material was coated thereon to a thickness of 40θA by vacuum deposition. Additionally, Alq3, which serves as light emitting/electron injection/electron transport material
was coated thereon to a thickness of 500A by vacuum deposition to complete the formation of a thin film of organic materials. On the Alq3 layer, lithium fluoride (LiF) and aluminum were sequentially vacuum-deposited to a thickness of 15A and 25O0A, respectively, to form a cathode (second electrode). In the above process, deposition rate of each organic material was maintained at 0.5-1.0 A/sec and deposition rates of lithium fluoride and aluminum were maintained at 0.2 A/sec and 2-3 A/sec, respectively. The resultant organic electroluminescence device showed a spectrum having a luminance of 3.87 cd/A under the application of a forward electric field with a drive voltage of 7.17V at a current density of 100 mA/cm2. <Example 29> Manufacture of organic light emitting device On the ITO transparent electrode prepared as described in Example 28, the compound represented by the above formula 62 was coated to a thickness of 80θA by thermal vacuum deposition, thereby forming a hole injection layer. Next, NPB as a hole transport material was coated thereon to a thickness of 400A by vacuum deposition. Additionally, Alq3, which serves as light emitting/electron injection/electron transport material was coated thereon to a thickness of 300A by vacuum deposition to complete the formation of a thin film of organic materials. The remaining procedure was the same as Example 28. The resultant organic electroluminescence device showed a spectrum having a luminance of 3.86 cd/A under the application of a forward electric field with a drive voltage of 7.8V at a current density of 100 mA/cm2.
<Example 30> Manufacture of organic light emitting device Example 28 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 63 was used instead of the compound represented by the above formula 61. The resultant organic electroluminescence device showed a spectrum having a luminance of 3.8 cd/A under the application of a forward electric field with a drive voltage of 7.8V at a current density of 100 mA/cm2. <Ξxample 31> Manufacture of organic light emitting device Example 28 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 64 was used instead of the compound represented by the above formula 61. The resultant organic electroluminescence device showed a spectrum having a luminance of 3.61 cd/A under the application of a forward electric field with a drive voltage of 8.1V at a current density of 100 mA/cm2. <Example 32> Manufacture of organic light emitting device Example 28 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 69 was used instead of the compound represented by the above formula 61. The resultant organic electroluminescence device showed a spectrum having a luminance of 3.82 cd/A under the application of a forward electric field with a drive voltage of 8.0V at a current density of 100 mA/cm2. <Example 33> Manufacture of organic light emitting device
Example 28 was repeated to manu acture an organic electroluminescence device, except that the compound represented by the above formula 71 was used instead of the compound represented by the above formula 61. The resultant organic electroluminescence device showed a spectrum having a luminance of 4.4 cd/A under the application of a forward electric field with a drive voltage of 7.6V at a current density of 100 mA/cm2. <Example 34> Manufacture of organic light emitting device Example 28 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 72 was used instead of the compound represented by the above formula 61. The resultant organic electroluminescence device showed a spectrum having a luminance of 4.15 cd/A under the application of a forward electric field with a drive voltage of 7.8V at a current density of 100 mA/cm2. <Ξxample 35> Manufacture of organic light emitting device Example 28 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 89 was used instead of the compound represented by the above formula 61. The resultant organic electroluminescence device showed a spectrum having a luminance of 4.3 cd/A under the application of a forward electric field with a drive voltage of 7.5 at a current density of 100 mA/cm2. <Example 36> Manufacture of organic light emitting device Example 28 was repeated to manufacture an organic electroluminescence device, except that the compound
represented by the above formula 95 was used instead of the compound represented by the above formula 61. The resultant organic electroluminescence device showed a spectrum having a luminance of 4.5 cd/A under the application of a forward electric field with a drive voltage of 7.3V at a current density of 100 mA/cm2. <Example 37> Manufacture of organic light emitting device Example 28 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 96 was used instead of the compound represented by the above formula 61. The resultant organic electroluminescence device showed a spectrum having a luminance of 4.4 cd/A under the application of a forward electric field with a drive voltage of 7.2V at a current density of 100 mA/cm2. <Example 38> Manufacture of organic light emitting device Example 28 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 113 was used instead of the compound represented by the above formula 61. The resultant organic electroluminescence device showed a spectrum having a luminance of 4.2 cd/A under the application of a forward electric field with a drive voltage of 7.7V at a current density of 100 mA/cm2. <Ξxample 39> Manufacture of organic light emitting device Example 28 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 114 was used instead- of the compound represented by the above formula 61.
The resultant organic electroluminescence device showed a spectrum having a luminance of 4.1 cd/A under the application of a forward electric field with a drive voltage of 7.6V at a current density of 100 mA/cm2. <Example 40> Manufacture of organic light emitting device Example 28 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 120 was used instead of the compound represented by the above formula 61. The resultant organic electroluminescence device showed a spectrum having a luminance of 3.98 cd/A under the application of a forward electric field with a drive voltage of 7.8V at a current density of 100 mA/cm2. <Example 41> Manufacture of organic light emitting device On the ITO transparent electrode prepared as described in Example 28, the compound represented by the above formula 192 was coated to a thickness of 800A by thermal vacuum deposition, thereby forming a hole injection layer. Next, NPB as a hole transport material was coated thereon to a thickness of 300A by vacuum deposition. Additionally, Alq3, which serves as light emitting/electron injection/electron transport material was coated thereon to a thickness of 30θA by vacuum deposition to complete the formation of a thin film of organic materials. The remaining procedure was the same as Example 28. The resultant organic electroluminescence device showed a spectrum having a luminance of 3.7 cd/A under the application of a forward electric field with a drive voltage of 6.7V at a current density of 100 mA/cm2.
<Example 42> Manufacture of organic light emitting device Example 41 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 193 was used instead of the compound represented by the above formula 192. The resultant organic electroluminescence device showed a spectrum having a luminance of 3.6 cd/A under the application of a forward electric field with a drive voltage of 6.9V at a current density of 100 mA/cm2. <Example 43> Manufacture of organic light emitting device Example 41 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 194 was used instead of the compound represented by the; above formula 192. The resultant organic electroluminescence device showed a spectrum having a luminance of 3.5 cd/A under the application of a forward electric field with a drive voltage of 6.8V at a current density of 100 mA/cm2. <Example 44> Manufacture of organic light emitting device Example 41 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 197 was used instead of the compound represented by the above formula 192. The resultant organic electroluminescence device showed a spectrum having a luminance of 3.9 cd/A under the application of a forward electric field with a drive voltage of 6.9V at a current density of 100 mA/cm2. <Example 45> Manufacture of organic light emitting device
Example 41 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 218 was used instead of the compound represented by the above formula 192. The resultant organic electroluminescence device showed a spectrum having a luminance of 3.8 cd/A under the application of a forward electric field with a drive voltage of 6.8V at a current density of 100 mA/cm2. <Ξxample 46> Manufacture of organic light emitting device Example 41 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 219 was used instead of the compound represented by the above formula 192. The resultant organic electroluminescence device showed a spectrum having a luminance of 3.6 cd/A under the application of a forward electric field with a drive voltage of 6.8V at a current density of 100 mA/cm2. <Example 47> Manufacture of organic light emitting device Example 41 was repeated to manufacture an organic electroluminescence device, except that the compound represented by the above formula 252 was used instead of the compound represented by the above formula 192. The resultant organic electroluminescence device showed a spectrum having a luminance of 3.2 cd/A under the application of a forward electric field with a drive voltage of 6.88V at a current density of 100 mA/cm2. As can be seen from the above Examples, the organic electroluminescence device using the compound according to the present invention as a hole injection
material can provide excellent electroluminescence effect as demonstrated by a luminance of 3.2-4.5 cd/A under a forward electric field of about 6.88V at a current density of 100 mA/cm2. In other words, when the compound according to the present invention is used as hole injection material in an organic electroluminescence device comprising NPB as hole transport material and Alq3 as light emitting/electron injection/electron transport material, it is possible to improve electroluminescence effect significantly compared to conventional devices.
Industrial Applicability As can be seen from the foregoing, novel compounds according to the present invention can realize improvements in luminous efficiency and lifespan, when they are used in organic compound layers of an organic electroluminescence (EL) device, which is one of light emitting devices. Therefore, the compound according to the present invention can be advantageously used in the field of electric devices including organic light emitting devices.
Claims
Claims 1. A compound represented by the following formula
2. The compound according to claim 1, wherein the aromatic hydrocarbon includes phenyl, biphenyl, terphenyl, naphthyl, anthracenyl, phenanthrene, pyrenyl and perylenyl .
3. The compound according to claim 1, wherein the heteroaromatic hydrocarbon includes thiophene, furan, pyrrole, imidazole, thiazole, oxazole, oxadiazole, thiadiazole, triazole, pyridyl, pyridazyl, pyrazine, quinoline and isoquinoline .
4. The compound according to claim 1, wherein the compound is represented by any one formula selected from the group consisting of the following formulae 2a-2e: [formula 2a] 
[formula 2b]
[formula 2c]
[formula 2d] 
wherein each of 1, m, n, o and R1-R8 is the same as defined in claim 1.
5. The compound according to claim 1, wherein the compound is represented by any one formula selected from the following formulae 3a-3n: [formula 3a]
[formula 3c]
[formula 3d]
[formula 3e]
[formula 3f]
6. The compound according to claim 1, wherein the compound represented by formula 1 is any one of compounds represented by the following formulae 61-227: 
formula 61 formula 62
formula 89 formula 90 
formula 91 formula 92
PβLOOO/SOOZWΑ/lDd ZΪS060/S00Z OΛV
formula 159 formula 160 
formula 161 formula 162
7. An organic light emitting device comprising a first electrode, a second electrode and one or more organic compound layers disposed between both the electrodes, wherein at least one of the organic compound layers comprises at least one compound as defined in any one of claims 1 to 6.
8. The organic light emitting device according to claim 7, wherein the organic compound layer comprising at least one compound as defined in any one of claims 1 to 6 is a hole injection/hole transport layer having hole injection and hole transport functions.
9. The organic light emitting device according to claim 7, wherein the organic compound layer comprising at least one compound as defined in any one of claims 1 to 6 is a hole injection/hole transport/light emitting layer having hole injection, hole transport and light emitting functions.
10. The organic light emitting device according to claim 7, wherein the organic compound layer comprising at least one compound as defined in any one of claims 1 to 6 is a hole injection layer having hole injection function.
11. The organic light emitting device according to claim 7, which comprises a substrate, anode, hole injection layer, hole transport layer, organic light emitting layer, electron transport layer and a cathode, from the bottom, wherein the organic compound layer comprising at least one compound as defined in any one of claims 1 to 6 is at least one selected from the group consisting of the hole injection layer, hole transport layer and the light emitting layer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006546860A JP5242917B2 (en) | 2004-03-19 | 2005-03-18 | Novel hole injection or transport material and organic light emitting device using the same |
| EP05733437.7A EP1725632B1 (en) | 2004-03-19 | 2005-03-18 | Organic electroluminescence devices comprising new materials for injecting holes |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2004-0018877 | 2004-03-19 | ||
| KR20040018877 | 2004-03-19 | ||
| KR1020040116388A KR20050118098A (en) | 2004-03-19 | 2004-12-30 | New materials for injecting or transporting holes and organic electroluminescence devices using the same |
| KR10-2004-0116388 | 2004-12-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005090512A1 true WO2005090512A1 (en) | 2005-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2005/000794 WO2005090512A1 (en) | 2004-03-19 | 2005-03-18 | New materials for injecting or transporting holes and organic electroluminescence devices using the same |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8198801B2 (en) |
| EP (1) | EP1725632B1 (en) |
| JP (1) | JP5242917B2 (en) |
| KR (1) | KR100664390B1 (en) |
| WO (1) | WO2005090512A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP1725632B1 (en) | 2014-04-30 |
| KR100664390B1 (en) | 2007-01-02 |
| EP1725632A1 (en) | 2006-11-29 |
| JP5242917B2 (en) | 2013-07-24 |
| EP1725632A4 (en) | 2009-05-06 |
| JP2007520470A (en) | 2007-07-26 |
| US20050225235A1 (en) | 2005-10-13 |
| KR20060044424A (en) | 2006-05-16 |
| US8198801B2 (en) | 2012-06-12 |
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