WO2005112520A1 - 発光素子 - Google Patents
発光素子 Download PDFInfo
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- WO2005112520A1 WO2005112520A1 PCT/JP2005/009041 JP2005009041W WO2005112520A1 WO 2005112520 A1 WO2005112520 A1 WO 2005112520A1 JP 2005009041 W JP2005009041 W JP 2005009041W WO 2005112520 A1 WO2005112520 A1 WO 2005112520A1
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- Prior art keywords
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- ring
- atom
- light emitting
- substituent
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- 239000000463 material Substances 0.000 claims abstract description 158
- 150000004696 coordination complex Chemical group 0.000 claims abstract description 26
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 109
- 125000003118 aryl group Chemical group 0.000 claims description 83
- 125000000217 alkyl group Chemical group 0.000 claims description 82
- 125000001424 substituent group Chemical group 0.000 claims description 81
- 229910052697 platinum Inorganic materials 0.000 claims description 50
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 48
- 229910052757 nitrogen Inorganic materials 0.000 claims description 38
- 125000000623 heterocyclic group Chemical group 0.000 claims description 36
- 125000003545 alkoxy group Chemical group 0.000 claims description 31
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 31
- 125000006615 aromatic heterocyclic group Chemical group 0.000 claims description 25
- 229910052751 metal Inorganic materials 0.000 claims description 25
- 239000002184 metal Substances 0.000 claims description 25
- 229910052717 sulfur Inorganic materials 0.000 claims description 24
- 125000004434 sulfur atom Chemical group 0.000 claims description 22
- 239000000470 constituent Substances 0.000 claims description 21
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 21
- 239000003446 ligand Substances 0.000 claims description 20
- 125000005843 halogen group Chemical group 0.000 claims description 17
- 125000004986 diarylamino group Chemical group 0.000 claims description 13
- 229910052741 iridium Inorganic materials 0.000 claims description 13
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 12
- 125000004429 atom Chemical group 0.000 claims description 11
- 125000004663 dialkyl amino group Chemical group 0.000 claims description 11
- 150000003624 transition metals Chemical group 0.000 claims description 11
- 125000005647 linker group Chemical group 0.000 claims description 9
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 7
- 125000002524 organometallic group Chemical group 0.000 claims description 3
- 230000000379 polymerizing effect Effects 0.000 claims description 3
- 241001024304 Mino Species 0.000 claims description 2
- -1 aromatic amine compound Chemical class 0.000 description 170
- 239000010410 layer Substances 0.000 description 95
- 125000004432 carbon atom Chemical group C* 0.000 description 74
- 238000000034 method Methods 0.000 description 41
- 125000003277 amino group Chemical group 0.000 description 34
- 150000001875 compounds Chemical class 0.000 description 33
- 125000003710 aryl alkyl group Chemical group 0.000 description 27
- 230000000052 comparative effect Effects 0.000 description 27
- 125000001931 aliphatic group Chemical group 0.000 description 22
- 125000005842 heteroatom Chemical group 0.000 description 22
- 238000010549 co-Evaporation Methods 0.000 description 21
- 238000002347 injection Methods 0.000 description 18
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- 125000004122 cyclic group Chemical group 0.000 description 17
- 125000002252 acyl group Chemical group 0.000 description 16
- 125000003367 polycyclic group Chemical group 0.000 description 14
- 125000004104 aryloxy group Chemical group 0.000 description 12
- CLSUSRZJUQMOHH-UHFFFAOYSA-L platinum dichloride Chemical compound Cl[Pt]Cl CLSUSRZJUQMOHH-UHFFFAOYSA-L 0.000 description 11
- 239000002904 solvent Substances 0.000 description 11
- 125000004423 acyloxy group Chemical group 0.000 description 10
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- 125000005368 heteroarylthio group Chemical group 0.000 description 8
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
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- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 8
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- 229910052799 carbon Inorganic materials 0.000 description 7
- 125000003963 dichloro group Chemical group Cl* 0.000 description 7
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- 125000001567 quinoxalinyl group Chemical group N1=C(C=NC2=CC=CC=C12)* 0.000 description 7
- FLBAYUMRQUHISI-UHFFFAOYSA-N 1,8-naphthyridine Chemical group N1=CC=CC2=CC=CN=C21 FLBAYUMRQUHISI-UHFFFAOYSA-N 0.000 description 6
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical group C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 6
- 125000004397 aminosulfonyl group Chemical group NS(=O)(=O)* 0.000 description 6
- 125000004659 aryl alkyl thio group Chemical group 0.000 description 6
- 125000005161 aryl oxy carbonyl group Chemical group 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 125000001951 carbamoylamino group Chemical group C(N)(=O)N* 0.000 description 6
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- 238000002955 isolation Methods 0.000 description 6
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- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 6
- 125000001624 naphthyl group Chemical group 0.000 description 6
- 239000001301 oxygen Chemical group 0.000 description 6
- PTMHPRAIXMAOOB-UHFFFAOYSA-N phosphoric acid amide group Chemical group P(N)(O)(O)=O PTMHPRAIXMAOOB-UHFFFAOYSA-N 0.000 description 6
- 238000000746 purification Methods 0.000 description 6
- 125000003226 pyrazolyl group Chemical group 0.000 description 6
- 125000000168 pyrrolyl group Chemical group 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- FCEHBMOGCRZNNI-UHFFFAOYSA-N 1-benzothiophene Chemical group C1=CC=C2SC=CC2=C1 FCEHBMOGCRZNNI-UHFFFAOYSA-N 0.000 description 5
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 5
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical group N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 5
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical group C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 5
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical group C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 5
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- 239000000956 alloy Substances 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 5
- 125000002837 carbocyclic group Chemical group 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- 125000001309 chloro group Chemical group Cl* 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 5
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 5
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 5
- 229910052731 fluorine Inorganic materials 0.000 description 5
- 125000001153 fluoro group Chemical group F* 0.000 description 5
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 5
- 125000002950 monocyclic group Chemical group 0.000 description 5
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 5
- 150000002894 organic compounds Chemical class 0.000 description 5
- 125000002971 oxazolyl group Chemical group 0.000 description 5
- 150000003058 platinum compounds Chemical class 0.000 description 5
- 229910052700 potassium Inorganic materials 0.000 description 5
- 239000011591 potassium Substances 0.000 description 5
- PBMFSQRYOILNGV-UHFFFAOYSA-N pyridazine Chemical group C1=CC=NN=C1 PBMFSQRYOILNGV-UHFFFAOYSA-N 0.000 description 5
- 238000004544 sputter deposition Methods 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 229910052723 transition metal Inorganic materials 0.000 description 5
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical group C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 4
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- 125000004453 alkoxycarbonyl group Chemical group 0.000 description 4
- 125000005530 alkylenedioxy group Chemical group 0.000 description 4
- 125000000304 alkynyl group Chemical group 0.000 description 4
- 150000001721 carbon Chemical group 0.000 description 4
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
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- 229910052740 iodine Inorganic materials 0.000 description 4
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- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 4
- 238000004020 luminiscence type Methods 0.000 description 4
- LFSXCDWNBUNEEM-UHFFFAOYSA-N phthalazine Chemical group C1=NN=CC2=CC=CC=C21 LFSXCDWNBUNEEM-UHFFFAOYSA-N 0.000 description 4
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- 239000002243 precursor Substances 0.000 description 4
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- 125000002943 quinolinyl group Chemical group N1=C(C=CC2=CC=CC=C12)* 0.000 description 4
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- 125000004665 trialkylsilyl group Chemical group 0.000 description 4
- 125000003774 valeryl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 4
- UGUHFDPGDQDVGX-UHFFFAOYSA-N 1,2,3-thiadiazole Chemical group C1=CSN=N1 UGUHFDPGDQDVGX-UHFFFAOYSA-N 0.000 description 3
- 239000004912 1,5-cyclooctadiene Substances 0.000 description 3
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical group C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical group C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
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- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- DGEZNRSVGBDHLK-UHFFFAOYSA-N [1,10]phenanthroline Chemical group C1=CN=C2C3=NC=CC=C3C=CC2=C1 DGEZNRSVGBDHLK-UHFFFAOYSA-N 0.000 description 3
- 125000000738 acetamido group Chemical group [H]C([H])([H])C(=O)N([H])[*] 0.000 description 3
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- 125000003785 benzimidazolyl group Chemical group N1=C(NC2=C1C=CC=C2)* 0.000 description 3
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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 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
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- 125000000400 lauroyl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
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- JOKPITBUODAHEN-UHFFFAOYSA-N sulfanylideneplatinum Chemical compound [Pt]=S JOKPITBUODAHEN-UHFFFAOYSA-N 0.000 description 1
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- ZCUFMDLYAMJYST-UHFFFAOYSA-N thorium dioxide Chemical compound O=[Th]=O ZCUFMDLYAMJYST-UHFFFAOYSA-N 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
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- MJRFDVWKTFJAPF-UHFFFAOYSA-K trichloroiridium;hydrate Chemical compound O.Cl[Ir](Cl)Cl MJRFDVWKTFJAPF-UHFFFAOYSA-K 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 125000000025 triisopropylsilyl group Chemical group C(C)(C)[Si](C(C)C)(C(C)C)* 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- C09K2211/185—Metal complexes of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
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- H10K85/30—Coordination compounds
- H10K85/341—Transition metal complexes, e.g. Ru(II)polypyridine complexes
- H10K85/342—Transition metal complexes, e.g. Ru(II)polypyridine complexes comprising iridium
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
- H10K85/361—Polynuclear complexes, i.e. complexes comprising two or more metal centers
Definitions
- the present invention relates to a high-efficiency phosphorescent device using an organic compound, such as a display device, a display, a knock light, an electrophotograph, an illumination light source, an exposure light source, a reading light source, a sign, a signboard, and an interior.
- an organic compound such as a display device, a display, a knock light, an electrophotograph, an illumination light source, an exposure light source, a reading light source, a sign, a signboard, and an interior.
- the present invention relates to a light emitter that can be suitably used in the field. Background art
- organic EL element (Hereinafter abbreviated as "organic EL element”) is attracting attention as a promising next-generation display element because it can emit light with high luminance at low voltage.
- Organic EL devices have a faster response speed and are self-luminous compared to conventionally used liquid crystals, and therefore do not require a backlight unlike conventional liquid crystals, and can be used with extremely thin flat panel displays. It is possible to form.
- Such an organic EL element is a light emitting device utilizing the electric field light emission phenomenon (EL), and is characterized by using an organic compound as a light emitting material which is in principle the same as an LED.
- an organic EL element is composed of a plurality of organic film layers laminated on a transparent substrate between a transparent electrode and a metal electrode, and the organic film layer is composed of a light emitting layer and a hole transport layer.
- the transparent electrode indium tin oxide (ITO) or the like having a large work function is used, and the transparent electrode has good hole injection characteristics to the hole transport layer.
- the metal electrode a metal material having a small work function, such as aluminum, magnesium, or an alloy thereof, is used so as to have good electron injection into the organic layer.
- an organic EL device using a multilayer thin film by a vapor deposition method As an example of an organic EL device using an organic compound as a light emitting material, an organic EL device using a multilayer thin film by a vapor deposition method has been reported.
- an organic EL device using a multilayer thin film formed by this vapor deposition method for example, tris (8-hydroxyquinolinato-O, N) aluminum (Alq)
- Phosphorescent light-emitting materials are particularly attracting attention because of the power that can expect high luminous efficiency in principle.
- the reason is that excitons generated by carrier recombination consist of singlet excitons and triplet excitons, and the probability is 1: 3.
- organic EL devices have taken out the singlet exciton force as fluorescence when transitioning to the ground state, but the emission yield is 25% of the number of excitons generated. Was the upper limit.
- phosphorescence from excitons generated from triplets is used, at least three times the yield is expected in principle, and furthermore, due to the intersystem crossing from an energetically high singlet to a triplet. Considering the transfer, in principle, 100% luminescence yield, which is 4 times higher, can be expected.
- Orthometallated iridium complexes such as (Ir (ppy)) are higher than fluorescent emission
- an object of the present invention is to provide a high-efficiency phosphorescent light-emitting element and a display device that can operate at a low voltage and solve the problem of light emission degradation. Disclosure of the invention
- the light-emitting layer is composed of a host material (main constituent material) having a carrier-transporting property and a guest material (sub-constituent material) having a phosphorescent light-emitting property
- the main component that causes phosphorescence emission from triplet excitons is obtained.
- the process also has several process powers:
- Desired energy transfer and light emission in each process occur in competition with various deactivation processes. It goes without saying that in order to increase the luminous efficiency of the EL device, the luminescence quantum yield of the guest material itself, which is the luminescent center material, must be increased. However, how to transfer energy between the host and the host or between the guest and the host efficiently becomes a big problem. Although the cause of light emission degradation due to energization is not clear at present, it is assumed that the cause is at least related to the environmental change of the guest material due to the guest material itself or its surrounding molecules.
- the present inventors have conducted intensive studies to solve the above problems, and as a result, in an organic light emitting device having a light emitting layer composed of two or more components between opposed electrodes, the light emitting layer It has been found that, by using a metal complex material as a main constituent material and using a phosphorescent light emitting material as a sub constituent material, a highly efficient light emitting element that can be driven at a low voltage and has little light emission deterioration can be obtained. Thus, the present invention has been completed.
- the present invention includes the following contents [1] to [11].
- a main constituent material of the light-emitting layer is a metal complex and a sub- constituent material is phosphorescent.
- a light-emitting element that is a light-emitting material is a light-emitting material.
- V 1 , V 2 and V 3 each represent a linking group, a single bond or a double bond
- the bond represented by a dashed line represents a single bond or a double bond
- the bond represented by a solid line represents two of a coordination bond and the other two represent a covalent bond.
- ring A, ring B, ring C and ring D may represent a nitrogen-containing heterocyclic ring, even if any two of the rings may have a substituent.
- the ring When the ring has a substituent, it may be an aromatic ring or Or ring A and ring B, ring A and ring C or Z, and ring B and ring D, which may form a condensed ring.
- a condensed ring may be formed.
- X 1 , X 2 , X 3 and X 4 each represent a nitrogen atom which is coordinated to a platinum atom, and the other two represent a carbon atom or a nitrogen atom.
- Q ⁇ Q 2, and Q 3 their respective independently is a divalent atom or atomic group or a bond, it is not Q ⁇ Q 2, and the Q 3 represents a bond at the same time.
- Any two of Z 3 and Z 4 represent a coordinate bond, and the other two represent a covalent bond, an oxygen atom or a sulfur atom.
- ring E and ring F each independently represent an aromatic ring or an aromatic heterocyclic ring which may have a substituent
- X represents an oxygen atom or a sulfur atom
- 31 , R 32 , R 33 and R 34 each independently represent a hydrogen atom or a substituent, provided that R 31 and R 32 , R 32 and R 33 , R 33 and R 34 are each bonded to form a ring May be further bonded to form a condensed ring.
- ring G, ring H and ring K each independently represent an aromatic ring which may have a substituent
- X represents an oxygen atom or a sulfur atom
- R 35 and R 36 are Each independently, a hydrogen source Represents a child or a substituent.
- R 35 and ring H, and R 36 and ring H are each bonded to form a condensed ring.
- RR 2 , R 3 , R 4 , R 5 , R 6 , R ′ and R are each independently a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, an aryl group, A group in which a halogen atom, an alkoxy group, a dialkylamino group, a diarylamino group or a polymerizable group is polymerized, and each substituent may be bonded to another substituent, and n is an integer of 1 to 3, and nl Represents an integer from 0 to 2. 1 The sum of Sn and nl is 2 or 3.
- M represents a transition metal atom.
- L represents a negative monovalent ligand.
- R 4 , R 5 , R 6 , R 7 and R 8 each independently represent a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, an aryl group, a halogen atom, an alkoxy group, a dialkylamino group, a diarylamino group or
- the polymerizable group indicates a polymerized group, and each substituent may be bonded to another substituent.
- R 9 and R 1G each independently represent an alkyl group, an aryl group, an alkoxy group or a halogenated alkyl group.
- R 9 and R 1C> each represent a polymerizable group or a group obtained by polymerizing the polymerizable group.
- Ra represents a hydrogen atom or an alkyl group.
- n is an integer of 1 to 3;
- nl is an integer of 1 to 3; the sum of n and nl is 2 or 3.
- M represents a transition metal atom.
- FIG. 1 shows an element configuration of an organic EL element produced in this example and a comparative example.
- FIG. 2 shows the half-life of the organic EL device in Comparative Example 3 and Example 3.
- FIG. 3 shows the half life of the organic EL device in Comparative Example 6 and Example 6.
- a phosphorescent light emitting material is used as a guest material.
- the phosphorescent light emitting material is preferably a phosphorescent light emitting material having a transition metal, and more preferably a phosphorescent light emitting material having platinum or iridium.
- Examples of the phosphorescent light emitting material having platinum include a platinum complex represented by the following general formula (1).
- W 3 and W 4 each represent a ligand coordinated to a platinum atom.
- the atoms contained in w ⁇ w 2 , w 3 and w 4 and coordinated to the platinum atom include a nitrogen atom, a carbon atom, an oxygen atom and a sulfur atom, and include a nitrogen atom, a carbon atom and an oxygen atom Is more preferred.
- the bond formed between the platinum atom and w 1 w 2 , w 3 and w 4 may be a covalent bond or a coordinate bond.
- W 2 , W 3 and W 4 are not particularly limited, but include aromatic carbocyclic ligands (eg, benzene ring, naphthalene ring, etc.) and aromatic heterocyclic ligands (eg, pyridine ring, triazine ring, Pyrrole ring, triazole ring, thiazole ring, thiadiazole ring, oxazole ring, oxadiazole ring, benzopyrrole ring, benzothiophene ring, benzofuran ring, pyrimidine ring, pyrazine ring, pyridazine ring, quinoline ring, isoquinoline ring, quinoxaline ring, phthalazine ring Quinazoline ring, naphthyridine ring, cinnoline ring, pyrazole ring, pyrrole ring, etc.).
- aromatic carbocyclic ligands eg, benzen
- the WW 2 , W 3 and W 4 that coordinate or bind to the platinum atom with a nitrogen atom are not particularly limited, but include a pyridine ring, a triazine ring, a pyrrole ring, a triazole ring, a thiazole ring, a thiadiazole ring, and an oxazole.
- Ring, oxaziazole ring, benzopyrrole ring, benzothiophene ring, benzofuran ring, pyrimidine ring, pyrazine ring, pyridazine ring, quinoline ring, isoquinoline ring, quinoxaline ring, phthalazine ring, quinazoline ring, naphthyridine ring, cinnoline ring, pyrazole ring, Examples include a nitrogen-containing heterocyclic ring such as a pyrrole ring, and an imino group (one C (R) N—).
- nitrogen-containing heterocycles may be substituted with an alkyl group, an alkoxy group, a halogenated alkyl group, an aryl group, a heteroaryl group, a substituted amino group, and the like described below.
- aryloxy preferably having 6 to 30 carbon atoms, preferably having 6 to 20 carbon atoms, more preferably having 6 to 12 carbon atoms
- heteroaryloxy C6-C30, preferably C6-C20, more preferably C6-C12, Pyridyloxy, pyrrolyloxy, triazolyloxy, thiazolyloxy, thiadiazolyloxy, oxazolyloxy, oxadiazolyloxy, benzopyryloxy, benzopyrroloxy, benzochenyloxy,
- aryloxy and heteroaryloxy may be substituted with an alkyl group, an alkoxy group, a halogenated alkyl group, an aryl group, a heteroaryl group, a substituted amino group and the like which will be described later.
- arylthio preferably having 6 to 30 carbon atoms, preferably having 6 to 20 carbon atoms, more preferably having 6 to 12 carbon atoms, for example, phenylthio, tolylthio, naphthylthio) , Anthralthio group, etc.
- heteroarylthio having 6 to 30, preferably 6 to 20, more preferably 6 to 12 carbon atoms, for example, pyridylthio, pyrrolylthio, triazolylthio, thiazolylthio, thiadiazolylthio, oxazolylthio , Oxaziazolylthio, benzopyridylthio, benzopyrrolylthio, benzochernylthio, benzofurylthio, pyrimidinylthio, pyrazulthio, pyridazinylthio, quinolylthio, isoquino
- arylthio and heteroarylthio may be substituted with an alkyl group, an alkoxy group, a halogenated alkyl group, an aryl group, a heteroaryl group, a substituted amino group, and the like described below.
- V 1 , V 2 and V 3 each represent a linking group, a single bond or a double bond.
- the linking group is not particularly limited, but includes a nitrogen atom linking group, an oxygen atom linking group, a carbonyl linking group. Bonding group, (poly) methylene group, arylene group, heteroarylene group, silicon atom linking group and the like.
- the platinum complex represented by the general formula (1) is preferably a platinum complex represented by the general formulas (2) to (4).
- the platinum complexes represented by the general formulas (2) to (4) will be specifically described below.
- Preferable phosphorescent light-emitting materials having platinum include a platinum complex represented by the following general formula (2) as one of the materials.
- ring ⁇ , ring ⁇ , ring C and ring D each represent a nitrogen-containing heterocyclic ring, even if two of the rings may have a substituent, and the remaining two
- the ring may have a substituent, and may represent an aromatic ring or an aromatic heterocyclic ring, and form a condensed ring with ring ⁇ and ring ⁇ , ring ⁇ and ring C or ⁇ , and ring ⁇ and ring D.
- X 1 , X 2 , X 3 and X 4 may have any two of them coordinated to a platinum atom.
- Q ⁇ Q 2 and Q 3 each independently represent a divalent atom or an atomic group or a bond, while the remaining two represent a carbon atom or a nitrogen atom. ⁇ Q 2 and Q 3 do not represent a bond at the same time. Any two of Z 3 and Z 4 represent a coordinate bond, and the other two represent a covalent bond, an oxygen atom or a sulfur atom. )
- At least one nitrogen-containing heterocyclic ring which may have a substituent in ring A, ring B, ring C or ring D 5 to 8 members, preferably 5 to 8, further containing 1 to 3 hetero atoms such as a nitrogen atom, an oxygen atom or a sulfur atom.
- Or 6 members A cyclic, polycyclic or fused cyclic heterocyclic ring is exemplified.
- the nitrogen atom of the nitrogen-containing heterocycle can be coordinated to a platinum atom.
- Other rings forming a polycyclic group or a condensed cyclic group include the aforementioned heterocyclic groups and carbocyclic groups.
- Preferred examples of the nitrogen-containing heterocycle include a pyridine ring, a triazine ring, a pyrrole ring, a triazole ring, a thiazole ring, a thiadiazole ring, an oxazole ring, an oxadiazole ring, a benzopyridine ring, a benzodiazine ring, and a benzopyrrole ring.
- One or more hydrogen atoms on the nitrogen-containing heterocyclic ring in ring A, ring B, ring C, and ring D of the platinum complex represented by general formula (2) may be substituted with a substituent.
- a substituent is not particularly limited as long as it does not adversely affect the light emission characteristics, but is preferably R 11 R 12 , R 13 and R 13 in a platinum complex represented by the following general formula (7).
- the groups described for R 14 can be mentioned.
- ring A, ring B, ring C and ring D are an aromatic ring or an aromatic heterocyclic ring which may have a substituent.
- the aromatic ring include a monocyclic, polycyclic or condensed carbocyclic group having 6 to 40 carbon atoms, preferably 6 to 30 carbon atoms, and more preferably 6 to 20 carbon atoms.
- the aromatic heterocyclic ring may be a 5- to 8-membered, preferably 5- or 6-membered monocyclic or polycyclic, containing 1 to 3, for example, a heteroatom consisting of a nitrogen atom, an oxygen atom or a sulfur atom. Examples include a cyclic or fused cyclic heterocyclic group.
- Examples of other rings forming a polycyclic or condensed cyclic form of the heterocyclic group include the above-described heterocyclic group and the above-described carbocyclic group.
- examples of the aromatic ring or aromatic heterocyclic ring include a benzene ring, a pyridine ring, a triazine ring, a pyrrole ring, a diazole ring, a furan ring, a thiophene ring, a naphthalene ring, a pyrimidine ring, a pyridazine ring, and quinoline.
- One or more hydrogen atoms on the aromatic heterocycle may be substituted with a substituent.
- a substituent is not particularly limited as long as it does not adversely affect the light emission characteristics, but is preferably R 11 R 12 , R 13 and R 11 in a platinum complex represented by the following general formula (7).
- the groups described in R 14 can be mentioned.
- divalent atoms or atomic groups represented by QQ 2 and Q 3 in the general formula (2) will be described.
- n2 represents an integer of 1 to 3
- n3 and n4 each represent 0 or 1.
- Specific examples and the like can be represented by the general formula (7) described below.
- Contact Keru alkyl group platinum complex is exactly the same as the case Ararukiru group, Ariru group and the hetero ring group.
- the ring formed by R 15 and R 16 , R 19 and R 2 , and R 21 and R 22 bonded to each other and substituted atoms may include a hetero atom 5 or 6 Ring.
- rings include cyclopentane ring, cyclohexane ring, tetrahydrofuran ring, tetrahydropyran ring, dioxolane ring, dioxane ring, furan ring, pyran ring, thiophene ring, benzene ring, tetrahydrosilole ring, And a silole ring.
- These rings may be a divalent spiro ring from the same atom, a divalent saturated ring from a different atom, or an aromatic ring. It also includes rings and the like.
- a preferred embodiment of the platinum complex represented by the general formula (2) is, for example, a platinum complex represented by the following general formula (7).
- R 1 and R 14 each independently represent an alkyl group, a halogenated alkyl group, an aralkyl group, an alkenyl group, an alkyl group, an aryl group, an amino group, a mono or Dialkylamino group, mono- or diaralkylamino group, mono- or diarylamino group, alkoxy group, alkenyl group, aralkyloxy group, aryloxy group, heteroaryloxy group, acyl group, alkoxycarbyl group, aryloxy group Xycarbol, acyloxy, acylamino, alkamoyl, alkylthio, aralkylthio, arylthio, heteroarylthio, hydroxyl, mercapto, halogen, cyano, carboxyl, nitro, hetero ring group, a trialkylsilyl group, a thoria Rirushiriru group, R 11 group s
- ml, m2, m3 and m4 represent an integer of 0 to 3. Further, when ml, m2, m3 and m4 are integers of 2 or more, the plurality of scales 11 , R 12 , R 13 and R 14 may be different: X 1 , x 2 , x 3 , x 4 , Q ⁇
- examples thereof include a linear, branched or cyclic alkyl group of 1 to 10, and specific examples thereof include a methyl group and ethyl.
- n-propyl group isopropyl group, n-butyl group, tert-butyl group, n-hexyl group, 2-ethylhexyl group, n-octyl group, n-decyl group, n-hexadecyl group, cyclopropyl group, Examples thereof include a cyclopentyl group and a cyclohexyl group.
- halogenated alkyl group examples include groups in which one or more hydrogen atoms of the above-described alkyl group have been substituted with a halogen atom such as a fluorine atom or a chlorine atom.
- a halogen atom such as a fluorine atom or a chlorine atom.
- perfluoroalkyl groups such as romethyl group and pentafluoroethyl group.
- aralkyl group one or more hydrogen atoms of the above-mentioned alkyl group are the same as those of the above-mentioned carbocyclic aryl group (the aryl group is a substituent of the above-mentioned alkyl group, an alkoxy group which will be described later, and a hydrogen atom or the like). Which may have a group).
- Preferable aralkyl groups include aralkyl groups having 7 to 30, preferably 7 to 20, and more preferably 7 to 15 carbon atoms which may have a substituent. And a 4-methylbenzyl group, a 4-methoxybenzyl group, and a 1-phenethyl group.
- the alkyl group may be a straight-chain or branched alkyl group having 2 to 30 carbon atoms, preferably 2 to 20 carbon atoms, more preferably 2 to 10 carbon atoms, and one or more double-chained alkyl groups. Examples thereof include a bond, and specific examples thereof include a butyl group, an aryl group, a 2-butenyl group, and a 3-pentenyl group.
- alkynyl group a linear or branched alkyl group having 2 to 30 carbon atoms, preferably 2 to 20 carbon atoms, more preferably 2 to 10 carbon atoms has one or more triple bonds.
- specific examples include, for example, an ethynyl group, a 1-propyl group, a 2-propyl group and the like.
- aryl group examples include an aryl group having 6 to 30 carbon atoms, preferably 6 to 20 carbon atoms, and more preferably 6 to 12 carbon atoms. Specific examples include, for example, a phenyl group, a tolyl group, Examples include a naphthyl group and an anthral group.
- the aryl group may have a substituent such as an alkyl group described above, an alkoxy group described below, or a halogen atom.
- Examples of the mono- or dialkylamino group include an amino group in which one or two hydrogen atoms have been substituted with the above-described alkyl group. Specific examples include methylamino. And a dimethylamino group, a getylamino group and the like.
- Examples of the mono or diaralkylamino group include an aralkyl group in which one or two hydrogen atoms have been substituted with the aralkyl group as described above.
- Specific examples include, for example, benzylamino. Group, dibenzylamino group, 1-phenylethylamino group and the like.
- Examples of the mono or diarylamino group include an amino group in which one or two hydrogen atoms are substituted with the above aryl group, and specific examples include, for example, a phenylamino group and a diphenyl group. -A lumino group, a ditolylamino group, a phenylnaphthylamino group and the like.
- the mono or diarylamino group may be a cyclic group. Examples of such a cyclic group include a carbazole-9-yl group.
- alkoxy group examples include a group in which an oxygen atom is bonded to the above-described alkyl group, and specific examples include, for example, a methoxy group, an ethoxy group, an n-propoxy group, an isopropoxy group, and an n-butoxy group. Group, tert-butoxy group, 2-ethylhexyloxy group and the like.
- alkoxy group examples include a group in which an oxygen atom is bonded to the above-described alkoxy group, and specific examples include, for example, a buroxy group and an aryloxy group.
- aralkyloxy group examples include a group in which an oxygen atom is bonded to the aralkyl group as described above, and specific examples include, for example, a benzyloxy group and a 1-phenethyloxy group.
- aryloxy group examples include a group in which an oxygen atom is bonded to the aryl group as described above, and specific examples include a phenoxy group, a tolyloxy group, and a naphthyloxy group.
- heteroaryloxy group examples include a group in which an oxygen atom is bonded to the heteroaryl group as described above.
- Specific examples include, for example, a 2-pyridyloxy group, a 2-viradyloxy group, Examples include a pyrimidyloxy group and a 2-quinolyloxy group.
- the acyl group may be linear or branched! /, For example, an acyl group having 1 to 18 carbon atoms derived from carboxylic acids such as aliphatic carboxylic acids and aromatic carboxylic acids. Examples include, for example, formyl, acetyl, propioyl, butyryl, bivaloyl Groups, a pentanoyl group, a hexanoyl group, a lauroyl group, a stearoyl group, a benzoyl group, an atalyloyl group, and the like.
- carboxylic acids such as aliphatic carboxylic acids and aromatic carboxylic acids. Examples include, for example, formyl, acetyl, propioyl, butyryl, bivaloyl Groups, a pentanoyl group, a hexanoyl group, a lauroyl group, a stearoyl group, a benzoyl group, an
- the alkoxycarbol group may be linear, branched, or cyclic, and includes, for example, an alkoxycarbol group having 2 to 19 carbon atoms. Specific examples include, for example, Methoxycarbol, ethoxycarbol, n-propoxycarbol, 2-propoxycarbol, n-butoxycarbol, tert-butoxycarbol, pentyloxycarbol, Examples include a hexyloxycarbol group, a 2-ethylhexyloxycarbol group, a lauryloxycarbol group, a stearyloxycarbol group, and a cyclohexyloxycarbol group.
- aryloxycarbonyl group examples include an aryloxycarbonyl group having 7 to 20 carbon atoms, and specific examples include, for example, a phenoxycarbonyl group, a naphthyloxycarbonyl group and the like. No.
- Examples of the acyloxy group include carboxylic acid-derived acyloxy groups having 2 to 18 carbon atoms. Specific examples thereof include, for example, an acetoxy group, a propio-loxy group, a petryloxy group, a pivaloyloxy group, and a pentanoyl group. Examples include a xy group, a hexanoyloxy group, a radioyloxy group, a stearoyloxy group, a benzoyloxy group, and an atariloyloxy group.
- Examples of the acylamino group include an amino group in which one hydrogen atom of the amino group is replaced by the above-mentioned acyl group. Specific examples include a formylamino group, an acetylamino group, and a propio group. -A lumino group, a bivaloylamino group, a pentanoylamino group, a hexanoylamino group, a benzoylamino group and the like.
- the rubamoyl group is an unsubstituted rubamoyl group or a mono- or di-substituted rubamoyl group in which at least one hydrogen atom on a nitrogen atom is substituted by an alkyl group, an aryl group or an aralkyl group as described above. Examples thereof include a carbamoyl group, a methyl carbamoyl group, a getylcarbamoyl group, and a phenylcarbamoyl group.
- the alkylthio group may be linear, branched, or cyclic, and includes, for example, an alkylthio group having 1 to 6 carbon atoms. Specific examples include, for example, a methylthio group and an ethylthio group. Examples thereof include a luthio group, n-propylthio group, 2-propylthio group, n-butylthio group, 2-butylthio group, isobutylthio group, tert-butylthio group, pentylthio group, hexylthio group, and cyclohexylthio group.
- Examples of the aralkylthio group include a group in which a sulfur atom is bonded to the aralkyl group as described above, and specific examples include, for example, a benzylthio group and a 1-phenethylthio group.
- arylthio group examples include a group in which a sulfur atom is bonded to the aryl group as described above, and specific examples include, for example, a phenylthio group and a naphthylthio group.
- heteroarylthio group examples include a group in which a sulfur atom is bonded to the heteroaryl group as described above. Specific examples thereof include, for example, a pyridylthio group, a 2-benzimidazolylthio group, and a 2-benz And a 2-benzothiazolylthio group.
- halogen atom examples include a fluorine atom, a chlorine atom, a bromine atom and an iodine atom.
- the heterocyclic group is a heteroaryl group as described above, for example, an imidazolyl group, a pyridyl group, a quinolyl group, a furyl group, a chel group, a piperidyl group, a benzoxazolyl group, a benzimidazolyl group. And a benzthiazolyl group.
- trialkylsilyl group examples include a silyl group tri-substituted with an alkyl group as described above, and specific examples include, for example, a trimethylsilyl group and a tert-butyldimethylsilyl group.
- Examples of the triarylsilyl group include a silyl group three-substituted by an aryl group, and specific examples include, for example, a trifursilyl group.
- R 11 groups, R 12 groups, R 13 groups, and R 14 groups may be combined to form a condensed ring structure. Further, R 11 and R 12 , R 11 And R 13 or / and R 12 and R 14 may be taken together to form a condensed ring structure. Specific examples of the condensed ring include, for example, a phenanthrene ring, a fluorene 9-on ring, a 1,10 phenanthroline ring, and a 4,5 diazafluorene 9-on ring. [0089] ml, m2, m3 and m4 each represent the number of R 1, R 2, R 3 and R 4, and each independently represents an integer of 0 to 3. Further, when ml, m2, m3 and m4 are integers of 2 or more, a plurality of RUs, R 12 , R 13 and R 14 may be the same or different from each other.
- platinum complex represented by the general formula (7) for example, a platinum complex represented by the following general formula (8) can be mentioned.
- R ", R”, R “ and R 14 are each independently an alkyl group, a halogenated alkyl group, Ararukiru group, an alkenyl group, an alkyl group, Ariru group, an amino group , Mono or dialkylamino group, mono or diaralkylamino group, mono or diarylamino group, alkoxy group, aryloxy group, aralkyloxy group, aryloxy group, heteroaryloxy group, acyl group, alkoxycarboxy group, and acyloxy group , Ashiruamino group, forces Rubamoiru group, a hydroxyl group, a mercapto group, a halogen atom, Shiano group, carboxyl group, a nitro group, or a heterocyclic group, trialkylsilyl group, triarylsilyl group, and each other R 11 group, R 12 group together, each other R 13 groups, together R 14 groups, form a R 11 and R
- R 11 and R 12 may form a connexion fused ring structures such with R 17.
- R 17 is a hydrogen atom, an alkyl group, Ararukiru group, terrorist ring group Ariru group to, In the bond between the platinum atom and X 1 , X 2 , X 3 and X 4 , two of them represent a coordinate bond and the other two represent a covalent bond.
- X 1 , X 2 , X 3 , X 4 , ml, m2, m3 and m4 represent the same meaning as described above.
- Specific examples thereof include, for example, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, tert-butyl group, n-hexyl group, —Ethylhexyl, n-octyl, n-decyl, n-hexadecyl, cyclopropyl, cyclopentyl, cyclohexyl and the like.
- At least one hydrogen atom of the above-mentioned alkyl group is a fluorine atom or a chlorine atom.
- a halogen atom such as an atom
- a perfluoroalkyl group such as a trifluoromethyl group and a pentafluoroethyl group.
- one or more hydrogen atoms of the alkyl group described above are as described above.
- examples thereof include a group substituted with a carbocyclic aryl group (the aryl group may have a substituent such as an alkyl group, an alkoxy group described below, and a halogen atom).
- Preferred aralkyl groups include an arylalkyl group having 1 to 30, preferably 1 to 20, and more preferably 1 to 15 carbon atoms, which may have a substituent, and specific examples include, for example, Examples include a benzyl group, a 4-methylbenzyl group, a 4-methoxybenzyl group, and a 1-phenethyl group.
- Formula Te Contact (8), Aruke represented by scale 11, R 12, R 13, R 14 - The group, may be branched, even straight-chain, for example 2 to 15 carbon atoms, Preferably an alkenyl group having 2 to 10 carbon atoms, more preferably 2 to 6 carbon atoms, specifically, a vinyl group, a probel group, a 1-butenyl group, a pentenyl group, a hexyl group and the like. No.
- Formula Te Contact (8), elongated 11, R 12, alkyl represented by R 13, R 14 - The group, may be branched, even straight-chain, for example 2 to 15 carbon atoms, Preferably an alkynyl group having 2 to 10 carbon atoms, more preferably 2 to 6 carbon atoms, specifically, ethynyl group, 1 propyl group, 2 propyl group, 1 butyl group, 3 butyl group, Examples include a pentyl group and a hexyl group.
- R 12, R 13, R 14, for example, methylcarbamoyl Ruamino group, Echiruamino group, monoalkylamino group and isopropyl amino group; for example, Dialkylamino groups such as dimethylamino group, acetylamino group and diisopropylamino group; for example, diaralkylamino groups such as dibenzylamino group; for example, monoarylamino groups such as phenylamino group, tolylamino group, and naphthylamino group; And diphenylamino groups such as diphenylamino group, ditolylamino group and phenylnaphthylamino group.
- Dialkylamino groups such as dimethylamino group, acetylamino group and diisopropylamino group
- diaralkylamino groups such as dibenzylamino group
- monoarylamino groups such as phenylamino
- R 12, R 13, R 14, an oxygen atom include groups attached to an alkyl group as defined above, Specific examples include, for example, a methoxy group, an ethoxy group, an n-propoxy group, an isopropoxy group, an n-butoxy group, a tert-butoxy group, a 2-ethylhexyloxy group and the like.
- Specific examples thereof include, for example, 2-pyridyloxy group, 2-virazyloxy group, 2-pyrimidyloxy group, 2-quinolyloxy group, and the like.
- the acyl group represented by the lengths 11 , R 12 , R 13 and R 14 may be linear or branched, for example, aliphatic carboxylic acid, aromatic
- examples thereof include an acyl group having 1 to 18 carbon atoms derived from a carboxylic acid such as a carboxylic acid, and specific examples include a formyl group, an acetyl group, a propioyl group, a butyryl group, a bivaloyl group, and a pentanoyl group.
- examples thereof include a xanoyl group, a lauroyl group, a stearoyl group, a benzoyl group, and an atalyloyl group. !
- Tert-butoxycarbol group pentyloxycarbol group, hexyloxycarbol group, 2-ethylhexyloxycarbol group, lauryloxycarbonyl group, stearyloxycarbol group And a cyclohexyloxycarbol group.
- examples of the acyloxy group represented by the lengths 11 , R 12 , R 13 , and R 14 include carboxylic acid-derived acyloxy groups having 2 to 18 carbon atoms, Specific examples include, for example, acetooxy, propionyloxy, butyryloxy, bivaloyloxy, pentanoyloxy, hexanoyloxy, lauroyloxy, stearoyloxy, benzoyloxy, atalyloyloxy and the like. No.
- the heterocyclic group represented by scale 11, R 12, R 13, R 14, R 17, with 2 to 15 carbon atoms For example, at least as the heteroatom 5 to 8 membered, preferably 5 or 6 membered monocyclic heteroaryl, polycyclic or fused, containing 1 to 3 heteroatoms such as nitrogen, oxygen and sulfur
- Specific examples include cyclic heteroaryl groups, specifically, furyl, phenyl, pyridyl, pyrimidyl, virazyl, pyridazyl, pyrazolyl, imidazolyl, oxazolyl, thiazolyl, benzofuryl, benzofurenyl.
- quinolyl group isoquinolyl group, quinoxalyl group, phthalazyl group, quinazolyl group, naphthyridyl group, cinnolyl group, benzimidazolyl group, benzoxazolyl group and A benzothiazolyl group;
- examples of the triarylsilyl group represented by the formulas 11 , R 12 , R 13 , and R 14 include a silyl group substituted with an aryl group described above. Examples thereof include a triphenylsilyl group.
- R 11 and R 12 groups may be taken together to form a condensed ring structure.
- R 11 and R 12 may form a fused ring structure together with R 17 .
- Specific examples of the condensed ring include, for example, a phenanthrene ring, a fluoren-9-on ring, a 1,10 phenanthroline ring, a 4,5-diazafluorene 9-on ring and the like.
- ring E and ring F each independently represent an aromatic ring or an aromatic heterocyclic ring which may have a substituent
- X represents an oxygen atom or a sulfur atom
- R 31 , R 31 32 , R 33 and R 34 each independently represent a hydrogen atom or a substituent, provided that R 31 and R 32 , R 32 and R 33 , R 33 and R 34 are each bonded to form a ring; The rings may be further bonded to form a condensed ring.
- ring E and ring F each independently represent an aromatic ring or an aromatic heterocyclic ring which may have a substituent.
- Examples of the aromatic ring include a monocyclic, polycyclic or condensed aromatic ring having 6 to 14 carbon atoms, and specific examples include a benzene ring, a naphthalene ring, an anthracene ring, and a phenanthrene ring.
- Examples of the substituted aromatic ring include an aromatic ring in which at least one hydrogen atom of the above aromatic ring is substituted with a substituent.
- the aromatic heterocyclic ring has, for example, 2 to 15 carbon atoms and contains at least 1, preferably 1 to 3 hetero atoms such as nitrogen, oxygen, and sulfur as hetero atoms. And a 5- to 8-membered, preferably 5- or 6-membered, monocyclic, polycyclic or condensed aromatic heterocyclic ring. Specific examples include a furan ring, a thiophene ring, a pyridine ring, a pyrimidine ring and a pyrazine ring.
- the substituted aromatic heterocycle include an aromatic heterocycle in which at least one hydrogen atom of the above aromatic heterocycle is substituted with a substituent.
- substituents include a hydrocarbon group, an aliphatic heterocyclic group, an aromatic heterocyclic group, a hydroxyl group, an alkoxy group, an alkylenedioxy group, an aryloxy group, an aralkyloxy group, and a heteroaryloxy group.
- hydrocarbon group examples include an alkyl group, an alkenyl group, an alkynyl group, an aryl group and an aralkyl group. Of these
- the alkyl group may be linear, branched or cyclic, for example, an alkyl group having 1 to 15 carbon atoms, preferably 1 to 10 carbon atoms, and more preferably 1 to 6 carbon atoms.
- the alkenyl group may be linear or branched, for example, an alkenyl group having 2 to 15 carbon atoms, preferably 2 to 10 carbon atoms, and more preferably 2 to 6 carbon atoms. Include a butyl group, a propenyl group, a 1-butyl group, a pentenyl group, a hexenyl group and the like.
- the alkyl group may be linear or branched, for example, an alkynyl group having 2 to 15 carbon atoms, preferably 2 to 10 carbon atoms, and more preferably 2 to 6 carbon atoms.
- Examples include ethynyl group, 1-propyl group, 2-propynyl group, 1-butynyl group, 3-butynyl group, pentyl group, hexyl group and the like.
- Examples of the aryl group include an aryl group having 6 to 14 carbon atoms, and specific examples include a phenyl group, a naphthyl group, an anthryl group, a phenanthrenyl group, and a biphenyl group.
- aralkyl group examples include groups in which at least one hydrogen atom of the above-mentioned alkyl group has been replaced with the above-mentioned aryl group.
- an aralkyl group having 7 to 13 carbon atoms is preferred.
- Examples of the aliphatic heterocyclic group include, for example, C2 to C14 and at least one, preferably 1 to 3, hetero atoms such as nitrogen, oxygen, and sulfur atoms as hetero atoms.
- Examples thereof include a 5- to 8-membered, preferably 5- or 6-membered, monocyclic aliphatic heterocyclic group, and a polycyclic or fused-ring aliphatic heterocyclic group.
- aliphatic heterocyclic group examples include, for example, a pyrrolidyl-2-one group, a piperidino group, a piperazyl group, a morpholino group, a tetrahydrofuryl group, a tetrahydrovinyl group, a tetrahydrochel group, and the like.
- aromatic heterocyclic group for example, a heteroatom having 2 to 15 carbon atoms and at least one, preferably 1 to 3 heteroatoms such as a nitrogen atom, an oxygen atom and a sulfur atom is used as a heteroatom.
- a 5- to 8-membered, preferably 5- or 6-membered, monocyclic aromatic heterocyclic group, polycyclic or fused ring Specific examples include an aromatic heterocyclic group of the formula, specifically, a furyl group, a chayl group, a pyridyl group, a pyrimidyl group, a virazyl group, a pyridazyl group, a pyrazolyl group, an imidazolyl group, an oxazolyl group, a thiazolyl group, and a benzofuryl group.
- an aromatic heterocyclic group of the formula specifically, a furyl group, a chayl group, a pyridyl group, a pyrimidyl group, a virazyl group, a pyridazyl group, a pyrazolyl group, an imidazolyl group, an oxazolyl group, a thiazolyl group, and
- Benzocell quinolyl, isoquinolyl, quinoxalyl, phthalazyl, quinazolyl, naphthyridyl, cinnolyl, benzimidazolyl, benzoxazolyl, benzothiazolyl and the like.
- the alkoxy group may be linear, branched or cyclic! /, For example, an alkoxy group having 1 to 6 carbon atoms, specifically, a methoxy group, an ethoxy group, an n-propoxy group , Isopropoxy, n-butoxy, 2-butoxy, isobutoxy, tert-butoxy, n-pentyloxy, 2-methylbutoxy, 3-methylbutoxy, 2,2 dimethylpropyloxy, n — Examples include a hexyloxy group, a 2-methylpentyloxy group, a 3-methylpentyloxy group, a 4-methylpentyloxy group, a 5-methylpentyloxy group, and a cyclohexyloxy group.
- alkylenedioxy group examples include an alkylenedioxy group having 1 to 3 carbon atoms, and specific examples include a methylenedioxy group, an ethylenedioxy group, and a propylenedioxy group.
- Examples of the aryloxy group include an aryloxy group having 6 to 14 carbon atoms, and specific examples include a phenyloxy group, a naphthyloxy group, and an anthroxy group.
- Examples of the aralkyloxy group include an aralkyloxy group having 7 to 12 carbon atoms, and specific examples thereof include a benzyloxy group, a 2-phenylethoxy group, a 1-phenylpropoxy group, and a 2-phenylpropoxy group.
- heteroaryloxy group for example, at least one heteroatom, preferably A heteroaryloxy group having 2 to 14 carbon atoms containing 1 to 3 heteroatoms such as a nitrogen atom, an oxygen atom and a sulfur atom, specifically, a 2 pyridyloxy group and a 2 Examples include a radioxy group, a 2-pyrimidoxy group, and a 2-quinoloxy group.
- acyloxy group examples include, for example, an acyloxy group having 2 to 18 carbon atoms derived from a carboxylic acid, and specific examples thereof include an acetoxy group, a propio-loxy group, a butyryloxy group, a pivaloyloxy group, and a pentanoyloxy group. Examples thereof include a xanoyloxy group, a lauroyloxy group, a stearoyloxy group, and a benzoyloxy group.
- the acyl group may be linear or branched! /,
- an acyl group having 1 to 18 carbon atoms derived from a carboxylic acid such as an aliphatic carboxylic acid and an aromatic carboxylic acid.
- carboxylic acid such as an aliphatic carboxylic acid and an aromatic carboxylic acid.
- examples thereof include a formyl group, an acetyl group, a propioyl group, a butyryl group, a bivaloyl group, a pentanoyl group, a hexanoyl group, a lauroyl group, a stearoyl group and a benzoyl group.
- the alkoxycarbon group may be linear, branched, or cyclic, and includes, for example, an alkoxycarbon group having 2 to 19 carbon atoms, and specific examples thereof include methoxycarbonyl.
- Examples of the aryloxycarbonyl group include, for example, an aryloxycarbon group having 7 to 20 carbon atoms, and specific examples thereof include a phenoxycarbol group and a naphthyloxycarbol group. And the like.
- Examples of the aralkyloxycarbon group include an aralkyloxycarbon group having 8 to 15 carbon atoms, and specific examples thereof include a benzyloxycarbon group and a phenylethoxycarbon group. And 9-fluoromethyloxycarbol.
- the alkylthio group may be linear, branched or cyclic, and includes, for example, an alkylthio group having 1 to 6 carbon atoms, and specifically, a methylthio group, an ethylthio group, an npropylthio group, Isopropylthio, n-butylthio, 2-butylthio, isobutylthio, tertbutylthio, pentylthio, hexylthio, cyclohexyl And a silthio group.
- an alkylthio group having 1 to 6 carbon atoms and specifically, a methylthio group, an ethylthio group, an npropylthio group, Isopropylthio, n-butylthio, 2-butylthio, isobutylthio, tertbutylthio, pentylthio, hexylthio, cyclohe
- Examples of the arylthio group include an arylthio group having 6 to 14 carbon atoms, and specific examples include a furthio group and a naphthylthio group.
- Examples of the aralkylthio group include an aralkylthio group having 7 to 12 carbon atoms, and specific examples include a benzylthio group and a 2-phenylethylthio group.
- Examples of the heteroarylthio group include, for example, a heteroarylthio group having 2 to 14 carbon atoms, which contains at least one, and preferably 1 to 3, heteroatoms such as a nitrogen atom, an oxygen atom, and a sulfur atom. Specific examples include a 4-pyridylthio group, a 2-benzimidazolylthio group, a 2-benzoxazolylthio group, and a 2-benzothiazolylthio group.
- Examples of the sulfiel group include a substituted sulfiel group represented by R-SO- (R represents the above-mentioned alkyl group, aryl group, aralkyl group, and the like). Specific examples of the sulfiel group include a methanesulfiel group and a benzenesulfiel group. Examples of the sulfol group include R—SO— (R is the above alkyl group, aryl group, aryl group
- Specific examples of the sulfonyl group include a methanesulfol group and a p-toluenesulfol group.
- Examples of the substituted amino group include an amino group in which one or two hydrogen atoms of an amino group are substituted with a substituent such as the above-mentioned alkyl group, aryl group or amino-protecting group.
- Specific examples of the amino-protecting group include an aralkyl group, an acyl group, an alkoxycarbonyl group, an aryloxycarbol group, an aralkyloxycarbol group and a sulfol group.
- an amino group substituted with an alkyl group that is, an alkyl group-substituted amino group include N-methylamino group, N, N dimethylamino group, N, N dimethylamino group, N, N diisopropylamino group, N And mono- or dialkylamino groups such as cyclohexylamino group.
- an amino group substituted with an aryl group that is, an aryl group-substituted amino group include mono- or amino groups such as N-phenylamino group, N, N-diphenylamino group, N-naphthylamino group, and N-naphthyl-N-phenylamino group.
- amino group substituted with an aralkyl group that is, an aralkyl group-substituted amino group include mono- or diaralkylamino groups such as N-benzylamino group and N, N-dibenzylamino group. Groups.
- amino group substituted with an acyl group that is, a formylamino group, an acetylamino group, a propio-amino group, a vivaloylamino group, a pentanoylamino group, a hexanoylamino group, a benzoylamino group, and the like.
- amino group substituted with an alkoxycarbol group that is, an alkoxycarbonylamino group
- an alkoxycarbonylamino group include a methoxycarbamino group, an ethoxycarbamino group, an n-propoxycarbamino group, an n-butoxycarbamino group, tert-Butoxycarbolamino group, pentyloxycarbonylamino group, hexyloxycarbonylamino group and the like.
- an amino group substituted with an aryloxycarbyl group i.e., an aryloxycarboylamino group include amino groups in which one hydrogen atom of the amino group is substituted with the above-mentioned aryloxycarbonyl group.
- specific examples include a phenoxycarbonylamino group and a naphthyloxycarbolamino group.
- Specific examples of the amino group substituted with the aralkyloxycarbol group, that is, the aralkyloxycarbonylamino group include a benzyloxycarbonylamino group.
- Specific examples of the amino group substituted with a sulfonyl group, that is, a sulfo-lamino group include a methanesulfo-lamino group and a p-toluenesulfonylamino group.
- Examples of the substituted rubamoyl group include a substituted rubamoyl group in which one or two hydrogen atoms of an amino group in the substituted rubamoyl group are substituted with a substituent such as the above alkyl group, aryl group, or aralkyl group.
- Specific examples include an N-methylcarbamoyl group, an N, N getylcarbamoyl group, and an N-phenylcarbamoyl group.
- Examples of the substituted sulfamoyl group include a sulfamoyl group in which one or two hydrogen atoms of an amino group in the sulfamoyl group are substituted with a substituent such as the above alkyl group, aryl group, or aralkyl group. Represents an N-methylsulfamoyl group, an N, N dimethylsulfamoyl group, an N-phenylsulfamoyl group, or the like.
- Examples of the substituted ureido group include ureido groups in which at least one hydrogen atom on a nitrogen atom in the ureido group is substituted with a substituent such as the above-mentioned alkyl group, aryl group, aralkyl group and the like. And a ureido group and an N-phenylureido group.
- the phosphoric acid amide group at least one hydrogen atom of the phosphoric acid group in the phosphoric acid amide group is Examples include a substituted phosphoric amide group substituted with a substituent such as the above-mentioned alkyl group, aryl group, aralkyl group, and the like, and specific examples include a getyl phosphoric acid amide group and a phenyl phosphoric acid amide group.
- the silyl group include a tri-substituted silyl group in which three hydrogen atoms on a silicon atom are substituted with a substituent such as the above-mentioned alkyl group, aryl group, aralkyl group and the like.
- a trimethylsilyl group examples include a tert-butyldimethylsilyl group, a tert-butyldiphenylsilyl group, and a triphenylsilyl group.
- the halogen atom include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.
- the rubamoyl group, substituted sulfamoyl group, substituted ureido group, phosphoric acid amide group or silyl group may be further substituted by a group selected from the group consisting of the above substituents.
- X represents an oxygen atom or a sulfur atom.
- Particularly preferred X includes an oxygen atom.
- R 31 and R 34 each independently represent a hydrogen atom or a substituent.
- substituents include a hydrocarbon group, an aliphatic heterocyclic group, an aromatic heterocyclic group, and the like.
- hydrocarbon group, the aliphatic heterocyclic group and the aromatic heterocyclic group include the same examples as the substituents described in detail in the description of ring E and ring F.
- substituents may be further substituted by a group whose group power is also selected in the description of ring E and ring F.
- R 32 and R 33 each independently represent a hydrogen atom or a substituent.
- substituents include a hydrocarbon group, an aliphatic heterocyclic group, an aromatic heterocyclic group, an acyl group, a carboxyl group, an alkoxycarbyl group, an aryloxycarbyl group, an aralkyloxycarbonyl group, Examples include a rubamoyl group, a substitutional rubamoyl group, and a cyano group.
- Hydrocarbon group aliphatic heterocyclic group, aromatic heterocyclic group, acyl group, carboxyl group, The alkoxycarbyl group, aryloxycarbol group, aralkyloxycarbol group, rubamoyl group, substitution rubamoyl group and cyano group are described in detail in the description of ring E and ring F. Examples similar to the substituents are given.
- a hydrocarbon group, an aliphatic heterocyclic group, an aromatic heterocyclic group, an acyl group, an alkoxycarbyl group, an aryloxycarbol group, an aralkyloxycarbol group, and a substitution power rubamoyl group May be further substituted by a group whose substituent group is also selected in the description of ring E and ring F.
- R 31 and R 32, R 32 and R 33, R 33 and R 34 are bonded to each other to form a ring! /.
- Examples of the case where R 31 and R 32 and R 33 and R 34 are bonded to form a ring include a nitrogen-containing aromatic heterocyclic ring which may have a substituent.
- the nitrogen-containing aromatic heterocycle includes a nitrogen-containing aromatic heterocycle and a substituted nitrogen-containing aromatic heterocycle.
- the nitrogen-containing aromatic heterocyclic ring is, for example, an aromatic heterocyclic ring having 2 to 15 carbon atoms and having at least one nitrogen atom capable of coordinating at least at the center of platinum as a heteroatom, and further having 1 to 3 carbon atoms.
- it may have a hetero atom such as a nitrogen atom, an oxygen atom, and a sulfur atom.
- the two atoms adjacent to the nitrogen atom coordinated with the platinum center are preferably carbon atoms.
- the nitrogen-containing aromatic heterocycle is a 5- to 8-membered, preferably 5- or 6-membered, monocyclic nitrogen-containing aromatic heterocycle, or a polycyclic or condensed-ring nitrogen-containing aromatic heterocycle.
- nitrogen-containing aromatic heterocyclic ring examples include, for example, a pyridine ring, a pyrimidine ring, a pyrazine ring, an imidazole ring, an oxazole ring, a thiazole ring, an isoquinoline ring, a quinazoline ring, a naphthyridine ring and the like.
- substituted nitrogen-containing aromatic heterocycle examples include a nitrogen-containing aromatic heterocycle in which at least one hydrogen atom of the above-described nitrogen-containing aromatic heterocycle is substituted by a substituent.
- substituent examples include the same examples as the substituent described in detail in the description of ring E and ring F.
- R 32 and as an example of a case in which R 33 is bonded to form a ring for example an optionally substituted aliphatic ring, an aliphatic heterocyclic ring which may have a substituent
- examples include an aromatic ring which may have a substituent and an aromatic heterocyclic ring which may have a substituent.
- the aliphatic ring which may have a substituent includes an aliphatic ring and a substituted aliphatic ring. Examples of the aliphatic ring include a 3 to 8 membered monocyclic aliphatic, polycyclic or fused ring having 3 to 14 carbon atoms. Aliphatic rings are mentioned.
- the aliphatic ring examples include a cyclopropane ring, a cyclobutane ring, a cyclopentane ring, a cyclohexane ring, a decalin ring, and the like.
- the substituted aliphatic ring examples include an aliphatic ring in which at least one hydrogen atom of the above aliphatic ring is substituted with a substituent.
- the substituent include the same examples as the substituent described in detail in the description of ring E and ring F.
- Examples of the aliphatic heterocycle having a substituent! / ⁇ may be! / ⁇ include an aliphatic heterocycle and a substituted aliphatic heterocycle.
- the aliphatic heterocyclic ring has, for example, 2 to 14 carbon atoms and contains at least one, preferably 1 to 3 hetero atoms such as nitrogen, oxygen, and sulfur as hetero atoms. Examples thereof include a monocyclic aliphatic heterocycle of 5 to 6 members, preferably 5 or 6 members, and a polycyclic or fused aliphatic heterocycle.
- aliphatic heterocycle examples include a pyrrolidone ring, a piperidine ring, a piperazine ring, a morpholine ring, a tetrahydrofuran ring, a tetrahydropyran ring, a tetrahydrothiophene ring, and the like.
- substituted aliphatic heterocycle examples include an aliphatic heterocycle in which at least one hydrogen atom of the above-mentioned aliphatic heterocycle is substituted by a substituent.
- substituent include the same examples as the substituents described in detail in the description of ring E and ring F.
- ring R 31 and R 32, R 32 and R 33, R 33 and R 34 are formed by combining each may each further bonded to form a condensed ring.
- the condensed ring include, for example, a quinoline ring, a dihydroquinoline ring, a quinazoline ring, a quinoxaline ring, a naphthyridine ring, a 1,10-phenanthroline ring, and a 4,5-diazafluorenone ring.
- ring G, ring H and ring K each independently represent an optionally substituted aromatic ring
- X represents an oxygen atom or a sulfur atom
- R 35 and R 36 independently represents a hydrogen atom or a substituent, provided that R 35 and ring H, and R 36 and ring each combine to form a condensed ring.
- examples of the substituent represented by R 35 and R 36 include the same groups as those described in the general formula (3).
- the ring G, the ring H and the ring K include the same rings as described for the ring E or the ring F in the general formula (3).
- the platinum complex represented by the general formula (7) can be synthesized by various methods. For example, it can be easily obtained by reacting a ligand with a platinum compound (complex precursor) in the presence of a suitable solvent and a suitable base, if necessary, in an inert gas atmosphere.
- a suitable solvent and a suitable base if necessary, in an inert gas atmosphere.
- the inert gas include a nitrogen gas and an argon gas.
- any of inorganic and organic platinum compounds can be used.
- Preferred inorganic platinum compounds are platinum halides such as platinum chloride, platinum bromide and platinum iodide, and sodium chloroplatinate.
- Potassium chloroplatinate, potassium bromide and iodine And halogenated platinum salts such as potassium chloroplatinate.
- Platinum chloride and potassium chloroplatinate are preferably used because of their availability.
- an organic platinum complex having a monodentate or bidentate ligand force is preferable from the viewpoint of a chelating effect.
- di- ⁇ -chloro-dichloroethylene diplatinum dichloro (-1,5-hexadiene) platinum, dichloro (7? -1,5-cyclooctadiene) platinum, ( ⁇ -bicyclo [2,2 [1,1] hepter 2,5 gen) dichloroplatinum and platinum-olefin complexes such as bis (7-1,5-cyclooctadiene) platinum, cis-trans bis (ammine) dichloroplatinum and dichloro (ethylenediammine) platinum Platinum amine complexes such as cis-
- Platinum-containing nitrogen-containing heterocyclic complexes such as trans bis (pyridinato) dichloroplatinum and (2,2 ′ bipyridinato) dichloroplatinum, and platinum such as cis bis (benzonitrile) dichloroplatinum and cis trans-bis (acetonitrile) dichloroplatinum -Tolyl complex, cis-trans-bis (tributylphosphine) dichloroplatinum, cis-trans-bis (triphenylphosphine) dichloroplatinum, dichloro [ethanebis (diphenylphosphine)] platinum and tetrakis (triphenyl) Platinum phosphine complexes such as phosphine) platinum, cis bis (tetrahydrothiophene)
- platinum complexes include platinum-olefin complexes such as dichloro (7-1,5-hexadiene) platinum and dichloro ( ⁇ -1,5-cyclooctadiene) platinum, and cis bis (benzo-tolyl).
- Platinum nitrile complexes such as dichloroplatinum and cis-trans-bis (acetonitrile) dichloroplatinum.
- organic platinum complexes may be isolated after preparation and used for a complex formation reaction, or may be prepared from an inorganic platinum compound and then reacted with a ligand without isolation, so-called one-pot reaction. It is also preferable to use them. Specifically, Shii-Dai Platinum and benzo-tolyl force cis-bis (benzo-tolyl) dichloroplatinum are prepared in the system, then the ligand is added, and if necessary, additives are added. And a reaction in which benzo-tolyl is used as a solvent.
- the platinum complex represented by the general formula (7) can be subjected to post-treatment, isolation and purification, if necessary, to carry out the reaction in multiple steps, or to a one-pot reaction without any post-treatment. It is also possible to carry out the reaction with.
- the post-treatment method includes, for example, extraction of the reaction product, filtration of the precipitate, crystallization by addition of a solvent, and evaporation of the solvent. Can be done using Examples of the purification method include column chromatography, recrystallization, sublimation, etc., and these can be used alone or in combination.
- the platinum complex represented by the general formulas (3) and (4) comprises a complex precursor and a ligand (the ligand is represented by the general formula (3) and the general formula (4)).
- the ligand is represented by the general formula (3) and the general formula (4).
- the complex precursor include inorganic platinum compounds such as platinum chloride (II), platinum bromide (II), platinum iodide (II), sodium chloroplatinate (II), and platinum chloride. Potassium acid (II), potassium bromide platinum (II) and the like are mentioned as examples.
- organoplatinum compounds are dichloro (1,5-cyclooctadiene) platinum and dichloro (bicyclo [2,2,1] Hepter 2,5-gen) Platinum, dichloro (1,5-hexadiene) platinum and the like.
- the platinum complex thus obtained can be subjected to post-treatment, isolation and purification, if necessary.
- post-treatment methods include extraction of a reaction product, filtration of a precipitate, crystallization by addition of a solvent, and evaporation of the solvent.These post-treatments can be performed alone or in combination.
- Methods for isolation and purification include, for example, column chromatography, recrystallization, sublimation, etc., which can be performed alone or in combination.
- the iridium complex can be obtained, for example, by the method described in M. Nonoyama, Bull. Chem. Soc. Jpn., 1974, 47 (3), 767-768. That is, a stoichiometric amount of a ligand such as 2-phenylpyridine is reacted with iridium chloride hydrate, and then reacted with acetylacetone in the presence of a base to form an acetyl acetonato complex. Is reacted with a stoichiometric amount of ligand in glycerol.
- a stoichiometric amount of a ligand such as 2-phenylpyridine
- the iridium complex thus obtained can be subjected to post-treatment, isolation and purification as necessary.
- the post-treatment method include extraction of a reaction product, filtration of a precipitate, crystallization by addition of a solvent, and evaporation of the solvent. These post-treatments can be performed alone or in combination.
- Methods for isolation and purification include, for example, column chromatography, recrystallization, sublimation, etc., which can be performed alone or in combination.
- the guest material conjugate used in the present invention may be a monomer or a polymer such as a dendrimer and a polymer compound. Further, the guest material used in the present invention may have a property of being soluble in an organic solvent or an aqueous solution.
- the metal complex as the host material of the light emitting layer include a metal complex formed from a metal element selected from a typical element, a transition element, or a lanthanoid element and a ligand.
- the metal complex may be a neutral metal complex or an ionic metal complex, but is preferably a neutral metal complex. More preferably, it is a metal complex having a light emitting property, and further preferably, a metal complex having a phosphorescent light emitting property.
- the metal complex having a phosphorescent property refers to a metal complex which emits phosphorescence at room temperature or low temperature in a crystal, a solid, or a solution.
- preferred complexes include a transition metal complex represented by the following general formula (5).
- RR 2 , R 3 , R 4 , R 5 , R 6 , R ′ and R are each independently a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, an aryl group, A group in which a halogen atom, an alkoxy group, a dialkylamino group, a diarylamino group, or a polymerizable group is polymerized, and each substituent may be bonded to another substituent, n is an integer of 1 to 3, and nl Represents an integer from 1 to 3. 1 The sum of Sn and nl is 2 or 3.
- M represents a transition metal atom.
- L represents a negative monovalent ligand.
- Examples of the alkyl group, aryl group, heterocyclic group, halogen atom, alkoxy group, dialkylamino group and diarylamino group in R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 include, for example, those described above.
- Examples of the transition metal represented by M include metals such as iridium, platinum, rhodium and palladium.
- the complex includes a transition metal complex represented by the following general formula (6).
- R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 each independently represent a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, an aryl group, a halogen atom, an alkoxy group, a dialkyl group It represents a group in which a mino group, a diarylamino group or a polymerizable group is polymerized, and each substituent may be bonded to another substituent.
- R 9 and R 1G each independently represent an alkyl group, an alkoxy group, an aryl group, a halogenated alkyl group or a polymerizable group and a group obtained by polymerizing the polymerizable group.
- Ra represents a hydrogen atom or an alkyl group.
- n represents an integer of 1 to 3
- nl represents an integer of 1 to 3
- M represents a transition metal atom.
- Examples of the alkyl group, aryl group, heterocyclic group, halogen atom, alkoxy group, dialkylamino group, and diarylamino group for R 6 , R 7, and R 8 include the groups described above.
- Examples of the alkyl group, alkoxy group, aryl group and halogenated alkyl group in R 9 and R 1C> include the groups described above.
- Examples of the alkyl group for Ra include the groups described above.
- Examples of the polymerizable group include groups having a terminal multiple bond, such as a vinyl group, an aryl group, an ethynyl group, and a propargyl group.
- Examples of the transition metal represented by M include metals such as iridium, platinum, rhodium and palladium.
- Examples of the host material used in the present invention include, for example, the following compounds.
- the present invention is not limited to these.
- n is a natural number (3-20)
- m.ri is a natural number
- n is a natural number (3-22) n is a natural number
- the host material conjugate used in the present invention may be a monomer or a polymer such as a dendrimer and a polymer compound. Further, the host material used in the present invention may have a property of being soluble in an organic solvent or an aqueous solution.
- the main constituent material (host material) and the sub constituent material (guest material) are in a weight ratio of 100 parts of the main constituent material to 0.01 to 80 parts of the sub constituent material. More preferably, it is 0.1 to 50 parts, more preferably 0.5 to 20 parts. Further, the ratio is preferably such that the quenching phenomenon does not occur between the light emitting materials as the sub-constituting materials.
- the above example The light-emitting layer containing the host material and the guest material shown above can contain other components. That is, a metal complex material, which is another guest material, or a light-emitting material such as a fluorescent material or a phosphorescent material can be used.
- the method for forming the organic layer (organic compound layer) of the light-emitting element is not particularly limited, and methods such as resistive thermal evaporation, electron beam, sputtering, molecular lamination, coating, and inkjet methods are used. In terms of characteristics and production, resistance heating evaporation and coating are preferred.
- a light-emitting element is an element in which a light-emitting layer or a plurality of organic compound thin films including a light-emitting layer is formed between a pair of anode and cathode electrodes.
- a hole injection layer In addition to the light-emitting layer, a hole injection layer, a hole transport layer, an electron injection layer, an electron It may have a transport layer, a protective layer, etc., and each of these layers may have other functions. Various materials can be used for forming each layer.
- the anode supplies holes to the hole injection layer, the hole transport layer, the light emitting layer, and the like, and may be a metal, an alloy, a metal oxide, an electrically conductive compound, or a mixture thereof.
- the material has a work function force of eV or more.
- Specific examples include conductive metal oxides such as tin oxide, zinc oxide, indium oxide, and indium tin oxide (hereinafter referred to as ITO), or metals such as gold, silver, chromium, and nickel, and conductive metals such as these.
- Examples include mixtures or laminates with metal oxides, inorganic conductive substances such as copper iodide and copper sulfide, organic conductive materials such as polyaniline, polythiophene and polypyrrole, and laminates of these with ITO.
- Preferred are conductive metal oxides, and ITO is particularly preferred in terms of productivity, high conductivity, transparency and the like.
- the thickness of the anode can be appropriately selected depending on the material, but is usually preferably in the range of 10 nm to 5 ⁇ m, more preferably 50 nm to 1 ⁇ m, and still more preferably 100 nm to 500 nm.
- a layer formed on a soda lime glass, a non-alkali glass, a transparent resin substrate or the like is usually used.
- glass it is preferable to use non-alkali glass in order to reduce ions dissolved from the glass.
- soda lime glass it is preferable to use a soda lime glass coated with a noria such as silica.
- the thickness of the substrate is not particularly limited as long as it is sufficient to maintain the mechanical strength, but when glass is used, the thickness is usually 0.2 mm or more, preferably 0.7 mm or more.
- a variety of methods are used to produce the anode depending on the material.
- methods such as electron beam method, sputtering method, resistance heating evaporation method, chemical reaction method (sol-gel method, etc.), and application of ITO dispersion
- the film is formed.
- the anode can be cleaned or otherwise treated to lower the drive voltage of the device and increase the luminous efficiency.
- UV ozone treatment and plasma treatment are effective.
- the cathode supplies electrons to the electron injection layer, the electron transport layer, the light emitting layer, and the like.
- the cathode has good adhesion between the negative electrode such as the electron injection layer, the electron transport layer, the light emitting layer, and the adjacent layer. It is selected in consideration of char, stability, etc.
- a metal, an alloy, a metal halide, a metal oxide, an electrically conductive compound, or a mixture thereof can be used as the material of the cathode. Specific examples thereof include alkali metals such as lithium, sodium, and potassium and fluorides thereof.
- Alkaline earth metals such as magnesium and calcium and their fluorides, gold, silver, lead, aluminum, sodium-potassium alloys or their mixed metals, magnesium-silver alloys or their mixed metals, rare earth metals such as indium and ytterbium, etc.
- the material is a material having a work function of 4 eV or less, and more preferably, aluminum, a lithium aluminum alloy or a mixed metal thereof, a magnesium silver alloy or a mixed metal thereof, or the like.
- the cathode may have a laminated structure containing the above compound and mixture.
- the thickness of the cathode is preferably in the range of 10 ⁇ to 5 / ⁇ , preferably 50 nm to 1 ⁇ m, more preferably 100 nm to 1 ⁇ m.
- the cathode is manufactured by an electron beam method, a sputtering method, a resistance heating evaporation method, a coating method, or the like.
- a metal can be evaporated alone or two or more components can be evaporated simultaneously.
- it is possible to form a pole with an alloy by depositing a plurality of metals at the same time, or to deposit a pre-adjusted alloy. The lower the sheet resistance of the cathode and anode, the better.
- the light-emitting layer generally has a range of preferably from 1 nm to 5 ⁇ m, more preferably from 5 nm to 1 ⁇ m, and still more preferably ⁇ ! ⁇ 500 nm.
- the method for forming the light-emitting layer is not particularly limited, but includes an electron beam method, a sputtering method, a resistance heating evaporation method, a molecular lamination method, a coating method (spin coating method, a casting method, a dip coating method, etc.), an inkjet method, and the like. Method, LB method And the like, and preferably a resistance heating evaporation method and a coating method.
- the material of the hole injection layer and the hole transport layer has a difference between a function of injecting holes from the anode, a function of transporting holes, and a function of blocking cathode injected electrons.
- Specific examples include carbazole derivatives, triazole derivatives, oxadiazole derivatives, oxazole derivatives, imidazole derivatives, polyarylalkane derivatives, pyrazoline derivatives, pyrazolone derivatives, phenylenediamine derivatives, arylamine derivatives, amino-substituted chalcone derivatives, and styryl derivatives.
- Anthracene derivatives fluorenone derivatives, hydrazone derivatives, stilbene derivatives, silazane derivatives, aromatic tertiary amine conjugates, styrylamine conjugates, aromatic dimethylidin compounds, porphyrin compounds, polysilane compounds, Examples thereof include a poly (N-vinylcarbazole) derivative, an ar-line-based copolymer, a thiophene oligomer, a conductive polymer oligomer such as polythiophene, an organic silane derivative, and an iridium complex.
- the thickness of the hole injection layer and the hole transport layer is not particularly limited, but is usually Inn!
- the range is preferably from 5 nm to 1 ⁇ m, more preferably from 10 nm to 500 nm.
- the hole injection layer and the hole transport layer may have a single layer structure composed of one or more of the above-mentioned materials, or may have a multilayer structure composed of a plurality of layers having the same composition or different compositions. ! / ⁇ .
- the hole injection layer and the hole transport layer can be formed by a vacuum evaporation method, an LB method, or a method in which the above-described hole injection / transport agent is dissolved or dispersed in a solvent and coated (spin coating, casting, dip coating, etc.). And a method such as an inkjet method.
- the coating method it can be dissolved or dispersed together with the resin component.
- the resin component include polychlorinated beads, polycarbonate, polystyrene, polymethyl methacrylate, polybutyl methacrylate, polyester, Polysulfone, polyphenylene oxide, polybutadiene, poly (N-vinylcarbazole), hydrocarbon resin, ketone resin, phenoxy resin, polyamide, ethylcellulose, butyl acetate, ABS resin, alkyd resin, epoxy resin, Silicone resin and the like.
- the material of the electron injection layer and the electron transport layer has either a function of injecting electrons from the cathode, a function of transporting electrons, or a function of blocking holes injected from the anode! / ⁇ It should be something.
- Anodic force Hole blocking layer that has the function of blocking injected holes The ionization potential is selected to be larger than the ionization potential of the light emitting layer.
- Specific examples include triazole derivatives, oxazole derivatives, polycyclic compounds, heteropolycyclic compounds such as bathocuproine, oxadiazole derivatives, fluorenone derivatives, diphenylquinone derivatives, thiopyrandioxide derivatives, and anthraquinone dimethane.
- anthrone derivatives carbodiimide derivatives, fluorenylidenemethane derivatives, distyryl virazine derivatives, aromatic anhydrides of aromatic tetracarboxylic acids such as naphthalenetetracarboxylic acid or perylenetetracarboxylic acid, metals of phthalocyanine derivatives, and 8-quinolinol derivatives
- Complexes various metal complexes represented by metal phthalocyanine, metal complexes having benzoxazole or benzothiazole as ligands, organic silane derivatives, iridium complexes and the like.
- the thickness of the electron injection layer and the electron transport layer is not particularly limited, but is usually preferably in the range of 1 nm to 5 ⁇ m, more preferably 5 nm to 1 ⁇ m, and still more preferably ⁇ ! ⁇ 500 nm.
- the electron injection layer and the electron transport layer may have a single-layer structure composed of one or two or more of the above-mentioned materials, or a multilayer structure composed of a plurality of layers having the same composition or different compositions. Is also good.
- Methods for forming the electron injection layer and the electron transport layer include a vacuum evaporation method, an LB method, and a method of dissolving or dispersing the hole injection / transport agent in a solvent and coating (e.g., spin coating, casting, dip coating, etc.). ) And an inkjet method.
- the coating method it can be dissolved or dispersed together with the resin component.
- the resin component those exemplified for the hole injection layer and the hole transport layer can be applied.
- any material may be used as long as it has a function of preventing a substance that promotes element deterioration such as moisture and oxygen from entering the element.
- Specific examples include metals such as indium, tin, lead, gold, silver, copper, aluminum, titanium, and nickel, magnesium oxide, silicon oxide, aluminum oxide, germanium oxide, nickel oxide, calcium oxide, and barium oxide.
- Metal metal oxides such as iron oxide, ytterbium oxide, and titanium oxide, magnesium fluoride, lithium fluoride, aluminum fluoride, and metal fluorides of calcium fluoride, polyethylene, polypropylene, polymethyl methacrylate, polyimide, and polyurea , Polytetrafluoroethylene, polychlorotriphneoleo ethylene, polydichlorodiphneoleoethylene, chlorotriphneoleo A copolymer of ethylene and dichlorodifluoroethylene, a copolymer obtained by copolymerizing a monomer mixture containing tetrafluoroethylene and at least one comonomer, and a copolymer having a cyclic structure in the main chain of the copolymer.
- Examples include a fluorocopolymer, a water-absorbing substance having a water absorption of 1% or more, and a moisture-proof substance having a water absorption of 0.1% or less.
- the method of forming the protective layer is not particularly limited, for example, vacuum evaporation, sputtering, reactive sputtering, MBE (molecular beam epitaxy), cluster ion beam, ion plating, plasma polymerization (high frequency excitation). Ion plating method), plasma CVD method, laser CVD method, thermal CVD method, gas source CVD method, and coating method can be applied.
- the highly efficient light-emitting element described in the present invention can be applied to products that require energy saving and high luminance.
- Examples of applications include display devices and lighting devices, light sources for printers, and backlights for liquid crystal display devices.
- As a display device it is possible to use a flat panel display that saves energy, has high visibility, and is lightweight.
- a light source of the printer a laser light source unit of a laser beam printer which is currently widely used can be replaced with the light emitting element of the present invention.
- An image can be formed by arranging independently addressable elements on an array and performing desired exposure on a photosensitive drum. By using the device of the present invention, the volume of the device can be significantly reduced.
- An organic EL display panel can be obtained by sequentially laminating a multilayer or single-layer organic EL layer Z cathode layer on the ITO electrode. By driving the display panel using the light emitting layer of the present invention, stable display can be performed with good image quality even for a long time display.
- Emission spectrum measurement device Spectrofluorometer USB2000 manufactured by Ocean Optics Corporation [0205] First, the common part of the element forming steps used in this example and the comparative example will be described.
- a device configuration a device having four organic layers shown in FIG. 1 was used.
- the following organic layers and electrode layers were vacuum-deposited on an ITO substrate by resistance heating in a vacuum chamber of 10-4 Pa to form a continuous film.
- Organic layer 1 (hole transport layer) (40nm): a— NPD
- Organic layer 2 (light-emitting layer) (35 nm): specified host Z specified guest
- Organic layer 3 (blocking layer) (lOnm) BCP (basocuproin)
- Organic layer 4 (Electron transport layer) (35 nm): Alq
- Electrode layer 1 (0.5 nm): LiF
- Electrode layer 2 (100 nm): A1
- a voltage was applied to the obtained device with the ITO side as the anode and the A1 side as the cathode, and the current, luminance, and emission spectrum were measured.
- oxygen and water were problems as a cause of element deterioration.
- the dry box was taken out of the vacuum chamber without contacting air, and the measurement was performed after sealing with a glass cap.
- a host material CBP
- the drive voltage of this device at 100 cdZm 2 was 7.25 V.
- the external quantum efficiency (QE) of lOOcdZm 2 was 10.5%, the noise efficiency was 6.71 mZW, and the luminance current efficiency was 15.4 cdZA.
- the highest external quantum efficiency was 11.1%.
- the highest luminance was 23,620 cdZm 2 .
- exemplary compound (E-5) 6% by weight of the host material (CBP) was doped by co-evaporation to form a light emitting layer.
- the drive voltage of this device at 100 cdZm 2 was 7.39 V.
- the external quantum efficiency (QE) of this device at lOOcdZm 2 was 10.4%, the power efficiency was 8.71 mZW, the luminance current efficiency was 14.3 cd / A, and the drive voltage was 5.15 V.
- driving voltage at LOOcdZm 2 was Comparative Example 2 by Rimoyaku 2V lower voltage.
- the emission threshold (lcdZm 2 ) was 2.68 V, the maximum external quantum efficiency was 10.6%, and the maximum luminance was 34,730 cdZm 2 (13 V, 569 mA / cm 2 , 4.4% QE).
- the exemplified compound (E-3) 6% by weight of the host material (4-1) was doped by co-evaporation to evaluate the half-life of the device in which the light emitting layer was formed (FIG. 2).
- the initial luminance was 1500 cdZm 2
- the current density was 14.55 mA / cm 2
- the current was 282 hours with constant current DC drive.
- the luminance was 864.8 cd / m 2 (57.65% of the initial luminance).
- the drive voltage was about 11 to 12 V, even when the drive voltage was approaching the half-life, and the rise in voltage was suppressed.
- the chromaticity coordinates showed no change.
- the device of the present example was obtained by using the exemplified compound (E-3) as a guest material and performing doping by co-evaporation at 6% by weight in a host material (CBP) to form a device (light emitting layer). It became clear that the life was longer than that of Comparative Example 3) (Fig. 2).
- a guest material 6% by weight of a host material (CBP) was doped by co-evaporation to form a light emitting layer.
- the external quantum efficiency (QE) of this device at lOOcdZm 2 was 3.4%, and the driving voltage was 12.03V.
- Example compound (111) as a guest material, the host material (41) was subjected to doping by co-evaporation at 6% by weight to evaluate the half-life of the device in which the light emitting layer was formed.
- Figure 3 The initial luminance was 1,500 cdZm 2 , the current density was 68.2 mA / cm 2 , and the luminance half-life under constant-current DC drive was 184.2 hours ( Figure 3).
- exemplary compound (E-2) 6% by weight of a host material (CBP) was doped by co-evaporation to form a light emitting layer.
- the driving voltage at 100 cd / m 2 was 8.
- IV. external quantum efficiency at lOOcdZm 2 (QE) is 10.9%, was power efficiency 4. 81mZW.
- the light-emitting device of the present invention can be suitably used as a light-emitting body in the fields of display devices, displays, backlights, electrophotography, illumination light sources, exposure light sources, reading light sources, signs, signboards, interiors, and the like.
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