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Organic compound, electroluminescent material and application of organic compound

An organic compound, a selected technology, applied in the field of organic compounds and electroluminescent materials, can solve the problems that cannot meet the requirements of high-performance OLED devices, achieve high glass transition temperature and molecular thermal stability, improve luminous efficiency and lifespan, The effect of lowering the driving voltage

Active Publication Date: 2020-08-21
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Currently, CN103305211A, CN103012481A and CN107311978A disclose phosphorescent host materials and their applications in electroluminescent devices. There are many deficiencies that cannot meet people's requirements for high-performance OLED devices. There is still great room for improvement in the improvement and balance of comprehensive performance of phosphorescent host materials.

Method used

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  • Organic compound, electroluminescent material and application of organic compound
  • Organic compound, electroluminescent material and application of organic compound
  • Organic compound, electroluminescent material and application of organic compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0118] This embodiment provides an organic compound with the following structure:

[0119]

[0120] The preparation method of this organic compound P71 comprises the steps:

[0121] (1)

[0122] In a 250 mL round bottom flask, triphenylamine 4-boronate (25 mmol), compound A (12 mmol) and tetrakis(triphenylphosphine)palladium Pd(PPh 3 ) 4 (0.3mmol) was added to a mixture of toluene (30mL) / ethanol (20mL) and potassium carbonate (12mmol) aqueous solution (10mL), and the reaction was refluxed under nitrogen atmosphere for 12h. The resulting mixture was cooled to room temperature, added to water, and filtered through a pad of celite. The filtrate was extracted with dichloromethane, washed with water, and dried over anhydrous magnesium sulfate. After filtration and evaporation, the crude The product yielded intermediate P71-1.

[0123] (2)

[0124] In a 250mL round bottom flask, the intermediate product P71-1 (23mmol) obtained in step (1), phenylboronic acid (12mmol) and...

Embodiment 2

[0129] This embodiment provides an organic compound with the following structure:

[0130]

[0131] The preparation method of this organic compound P73 comprises the steps:

[0132] (1)

[0133] In a 250mL round bottom flask, biphenylboronic acid (25mmol), compound A (10mmol) and Pd(PPh 3 ) 4 (0.3mmol) was added to a mixture of toluene (30mL) / ethanol (20mL) and potassium carbonate (15mmol) aqueous solution (10mL), and the reaction was refluxed under nitrogen atmosphere for 12h. The resulting mixture was cooled to room temperature, added to water, and filtered through a pad of celite. The filtrate was extracted with dichloromethane, washed with water, and dried over anhydrous magnesium sulfate. After filtration and evaporation, the crude The product yielded intermediate P73-1.

[0134] (2)

[0135] In a 250mL round bottom flask, the intermediate product P73-1 (10mmol), phenylboronic acid (25mmol) and Pd(PPh 3 ) 4 (0.3mmol) was added to a mixture of toluene (40mL) / ...

Embodiment 3

[0140] This embodiment provides an organic compound with the following structure:

[0141]

[0142] The preparation method of this organic compound P95 comprises the steps:

[0143] (1)

[0144] In a 250mL round bottom flask, triphenylamine 4-boronate (25mmol), compound B (12mmol) and Pd(PPh 3 ) 4 (0.3mmol) was added to a mixture of toluene (35mL) / ethanol (25mL) and potassium carbonate (13mmol) aqueous solution (15mL), and the reaction was refluxed under nitrogen atmosphere for 12h. The resulting mixture was cooled to room temperature, added to water, and filtered through a pad of celite. The filtrate was extracted with dichloromethane, washed with water, and dried over anhydrous magnesium sulfate. After filtration and evaporation, the crude The product yielded intermediate P95-1.

[0145] (2)

[0146] In a 250mL round bottom flask, the intermediate product P95-1 (10mmol), phenylboronic acid (25mmol) and Pd(PPh 3 ) 4 (0.3mmol) was added to a mixture of toluene (4...

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Abstract

The invention provides an organic compound, an electroluminescent material and application of the organic compound. The organic compound has a structure represented by formula I. Through the special design of a molecular structure and a substituent group, the organic compound has high triplet state energy level ET, high molecular density, high glass transition temperature and high molecular thermal stability, effectively improves the equilibrium migration of carriers, broadens an exciton recombination region, improves the light extraction efficiency, improves the luminous efficiency of an electroluminescent device and prolongs the service life of the electroluminescent device. The organic compound provided by the invention is highly suitable for being applied to a light-emitting layer of an OLED device, and the light-emitting efficiency, chromaticity and service life of the device can be remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of organic electroluminescent materials, and in particular relates to an organic compound, an electroluminescent material and applications thereof. Background technique [0002] As a new generation of display technology, organic electroluminescent materials (OLED) have the advantages of ultra-thin, self-luminous, wide viewing angle, fast response, high luminous efficiency, good temperature adaptability, simple production process, low driving voltage, and low energy consumption. It has been widely used in industries such as flat panel display, flexible display, solid state lighting and vehicle display. [0003] Organic electroluminescent materials can be divided into two types according to the luminescence mechanism: electrofluorescence and electrophosphorescence. Electrofluorescence is the radiative attenuation transition of singlet excitons, and electrophosphorescence is the emission of triplet excitons rad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D221/20C07D241/38C07D401/04C07D401/10C07D401/14C07D403/04C07D403/14C07D417/14C07D471/04C07D471/10C07D487/10C07D519/00C09K11/06H01L51/50H01L51/54
CPCC07D403/14C07D471/04C07D403/04C07D401/14C07D401/10C07D401/04C07D471/10C07D487/10C07D519/00C07D417/14C07D221/20C07D241/38C09K11/06C09K2211/1029C09K2211/1044C09K2211/1059C09K2211/1007C09K2211/1014C09K2211/1037C09K2211/1011H10K85/615H10K85/622H10K85/631H10K85/654H10K85/657H10K85/6572H10K50/11Y02E10/549
Inventor 刘营邓东阳代文朋李杨张磊高威牛晶华
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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