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Metal complex and organic electroluminescence device thereof

A metal complex, unsubstituted technology, applied in the field of metal complexes and their organic electroluminescence devices, can solve problems such as the inability to provide satisfactory luminescence characteristics, achieve improved glass transition temperature and thermal stability, reduce Phosphorescence lifetime, effect of reducing triplet-triplet annihilation

Inactive Publication Date: 2018-11-27
CHANGCHUN HYPERIONS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the light-emitting layer, the traditionally used guest-doped materials usually cannot provide satisfactory light-emitting characteristics. Therefore, it is still necessary to design new guest-doped materials with better performance to improve the performance of organic electroluminescent devices.

Method used

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  • Metal complex and organic electroluminescence device thereof
  • Metal complex and organic electroluminescence device thereof
  • Metal complex and organic electroluminescence device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] Embodiment 1: the preparation of compound TM1

[0093]

[0094] Add compound A1 (16.1g, 100mmol), compound B1 (12.3g, 105mmol), Pd(PPh 3 ) 4 (2.31g, 2mmol), toluene (300ml), aqueous sodium carbonate solution (2M, 150ml), and stirred at reflux for 8 hours. After the above reaction solution was cooled to room temperature, it was extracted with toluene, the organic phases were combined, washed with saturated brine, dried and concentrated, and subjected to column chromatography using silica gel as the stationary phase to obtain compound D1.

[0095] Under the protection of nitrogen, compound D1 (2.4g, 12mmol), iridium trichloride trihydrate (1.76g, 5mmol), and pure water (5ml) were successively added to the flask, and refluxed at 150°C for 12 hours to stop the reaction and add 150ml of distilled water precipitated out, and the reaction mixture was filtered, and the filter cake was washed with absolute ethanol, and dried to obtain compound Sub I-1.

[0096] Add compoun...

Embodiment 2

[0097] Embodiment 2: the preparation of compound TM16

[0098] Compound A1 in Example 1 was replaced by equimolar A2, compound B1 was replaced by equimolar B2, and other steps were the same as in Example 1 to obtain compound TM16 (274 mg, 75%). Mass spectrum m / z: theoretical value: 915.12; found value: 917.52. Theoretical element content (%)C 45 h 42 IrN 10 : C, 59.06; H, 4.63; Ir, 21.00; N, 15.31; Measured element content (%): C, 59.02; H, 4.71; Ir, 20.97; N, 15.30. The above results confirmed that the obtained product was the target product.

[0099]

Embodiment 3

[0100] Embodiment 3: the preparation of compound TM26

[0101] Compound A1 in Example 1 was replaced by equimolar A3, compound F1 was replaced by equimolar F2, and other steps were the same as in Example 1 to obtain compound TM26 (281 mg, 69%). Mass spectrum m / z: theoretical value: 1021.33; found value: 1023.51. Theoretical element content (%)C 55 h 56 IrN 8 : C, 64.68; H, 5.53; Ir, 18.82; N, 10.97; Measured element content (%): C, 64.65; H, 5.62; Ir, 18.79; N, 10.94. The above results confirmed that the obtained product was the target product.

[0102]

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Abstract

The invention discloses a metal complex and an organic electroluminescence device thereof, relating to the technical field of organic optoelectronic materials. A first ligand and an auxiliary ligand in a structural formula I (shown in the description) are capable of well stabilizing central metal atoms, and the first ligand and a second ligand respectively form a five-member ring configuration anda four-member ring configuration with the metal atoms, so that the metal complex has a relatively rigid structure, and the high-performance and high-efficiency phosphorescence emission is realized. By introducing a large-volume substituent group, the glass transition temperature and the thermal stability of the metal complex are respectively effectively increased and improved, and the film formation of a material is promoted. The organic electroluminescence device comprises a cathode, an anode and one or more organic matter layers, wherein at least one organic matter layer contains the metalcomplex. The organic electroluminescence device is relatively low in driving voltage, relatively high in luminous efficiency and luminance and has a relatively long service life.

Description

technical field [0001] The invention relates to the technical field of organic photoelectric materials, in particular to a metal complex and an organic electroluminescent device. Background technique [0002] As a key material in OLED devices, organic light-emitting materials can be roughly divided into three categories according to the principle of light emission: traditional fluorescent materials, phosphorescent materials and thermally activated delayed fluorescence (TADF) materials. Traditional fluorescent materials can only use 25% of singlet excitons to emit light, and the luminous efficiency is low. Phosphorescent materials can use 25% singlet excitons and 75% triplet excitons to radiate and emit light, which can theoretically achieve 100% internal quantum efficiency. In 1998, M.A.Baldo et al. doped transition metal platinum in the light emitting layer The organic chelating molecule PtOEt prepared a saturated red phosphorescent OLED device with an external quantum eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00C09K11/06H01L51/54
CPCC09K11/06C07F15/0033C09K2211/185C09K2211/1044C09K2211/1037C09K2211/1033C09K2211/1029H10K85/342
Inventor 韩春雪孙敬
Owner CHANGCHUN HYPERIONS TECH CO LTD
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