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Metal complex, light-emitting material and light-emitting device

A metal complex, metal technology, applied in luminescent materials, electroluminescent light sources, electrical components, etc., can solve the problems of limited production and reserves of iridium, and achieve the effect of excellent color purity and excellent characteristics

Inactive Publication Date: 2008-11-12
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, iridium is a metal with limited production and reserves

Method used

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  • Metal complex, light-emitting material and light-emitting device
  • Metal complex, light-emitting material and light-emitting device
  • Metal complex, light-emitting material and light-emitting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0303] Hereinafter, examples are given in order to further describe the present invention in detail, but the present invention is not limited by them.

Synthetic example 1

[0305] Synthesis of compound (L-1)

[0306] [chem 27]

[0307]

[0308] Weigh 2.84g (0.01mol) of 2-iodo-5-bromopyridine, 1.52g (0.0125mol) of phenylboronic acid, and 50mL of toluene in a reaction vessel, add 0.69g (0.006 mol) and 2M aqueous sodium carbonate solution (10 mL), heated and stirred at 80° C. for 10 hours under nitrogen flow. After recovering the organic layer of the reaction solution, it was washed with an aqueous sodium carbonate solution (80 mL) and saturated brine (20 mL). After drying over sodium sulfate, it was purified by silica gel column chromatography (hexane / toluene), and the solvent was distilled off to obtain 2.02 g (0.0086 mol) of compound (L-1). The yield was 86%.

[0309] LC-MS (positive) m / z: 234 ([M+H] + )

[0310] 1 H NMR (300MHz, CDCl 3 )

[0311] δ7.46(m, 3H), δ7.63(d, J=8.7Hz, 1H), δ7.87(m, 1H), δ7.96(m, 2H), δ8.74(s, 1H).

Synthetic example 2

[0313] Synthesis of Compound (L-2)

[0314] [chem 28]

[0315]

[0316] Weigh 29.49 g (0.125 mol) of p-dibromobenzene, 18.78 g (0.05 mol) of tris(n-butyl)(2-pyridyl)tin, 6.36 g (0.15 mol) of lithium chloride, and 200 mL of toluene in a reaction vessel. 1.75 g (0.0025 mol) of bis(triphenylphosphine)palladium(II) dichloride was added, and the mixture was refluxed for 7 hours under a nitrogen stream. After cooling in air, a saturated potassium fluoride aqueous solution (150 mL) was added, and the reaction solution was filtered. After toluene was distilled off, the residue was extracted with chloroform (500 mL), and washed with a 5% aqueous sodium bicarbonate solution (200 mL). After distilling off the solvent, it was purified by silica gel column chromatography (hexane / toluene: 1 / 1), and the solvent was distilled off to obtain 4.15 g (0.0177 mol) of compound (L-2). The yield is 36%.

[0317] LC-MS (positive) m / z: 234 ([M+H] + )

[0318] 1 H NMR (300MHz, CDCl 3 )

[03...

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Abstract

Disclosed is a metal complex which has a central metal (M) selected from the group consisting of Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, Hf, Ta, W, Re, Pt, Au and Hg. The metal complex has no halogen unidentate ligand. In the metal complex, the sum total of the square values of the orbital coefficients of the outermost d orbitals of the central metal comprises 1 / 3 or higher of the sum total of the square values of all of the atomic orbital coefficients in the highest occupied molecular orbital (HOMO) given by a computational scientific technique, the energy difference (S1-T1) between the minimum singlet excitation energy (S1) and the minimum triplet excitation energy (T1) given by a computational scientific technique falls within the range from 0.1 (eV) to 1.0 (eV) inclusive, and the oscillator strength (f) falls within the range from 0.005 and 1.0 inclusive.

Description

technical field [0001] The present invention relates to a metal complex, a light-emitting material containing the metal complex, and a light-emitting element. Background technique [0002] Among the light-emitting materials used in the light-emitting layer of an electroluminescence element, a metal complex showing light emission from a triplet excited state or a light-emitting material containing it is different from a fluorescent material mainly used at present that uses light emission from a singlet excited state Compared with that, higher luminous efficiency can be expected. The reason for this is that theoretically, 25% of excitons generated by carrier recombination are singlet excited states, and the remaining 75% are triplet excited states. That is, in the case of using luminescence (fluorescence) from a singlet excited state, in principle, 25% is the upper limit, but if luminescence (phosphorescence) from a triplet excited state is used, three times can be expected i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00C07D207/44C07D213/53C09D11/00C09K11/06H01L51/50
CPCH01L51/0061C09D11/38H01L51/007C07F15/0086H01L51/0094C07D213/53C07D207/44C09K2211/185C09D11/50H05B33/14C09K11/06H01L51/0071H01L51/0087C09D11/03H01L51/5016H10K85/6565H10K85/636H10K85/346H10K85/657H10K85/40H10K50/11H10K2101/10H01L2924/01111
Inventor 秋野喜彦关根千津冈村玲
Owner SUMITOMO CHEM CO LTD
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