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Electron transport material, organic light-emitting device and display device

An electron transport material and electron transport layer technology, applied in the direction of electric solid devices, electrical components, organic chemistry, etc., can solve the problems of poor energy level matching, restricting the display function of OLED luminous efficiency OLED display device, and low electron migration rate, etc. Achieve the effect of prolonging service life, good thermodynamic stability and strong transition ability

Active Publication Date: 2021-02-09
YANTAI-JINGSHI INST OF MATERIAL GENOME ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the electron transport materials currently used in OLEDs can achieve low electron mobility and poor energy level matching with adjacent layers, which seriously restricts the luminous efficiency of OLEDs and the display function of OLED display devices.

Method used

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  • Electron transport material, organic light-emitting device and display device
  • Electron transport material, organic light-emitting device and display device
  • Electron transport material, organic light-emitting device and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1、A1

[0052] The synthesis of embodiment 1, A1

[0053] Add 100mmol of 2,4-dichloroquinazoline, 100mmol of 2-boronic acid methyl benzoate, 41.4g of potassium carbonate (300mmol), 800ml of DMF, 200ml of water and Pd(PPh 3 ) 4 , reacted at 120°C for 12h, after the reaction was completed, the reactant was cooled to room temperature, added water, filtered, washed with water, and the obtained solid was recrystallized and purified with toluene to obtain a white powder M1, wherein Pd(PPh 3 ) 4 The addition is 1mol% of 2,4-dichloroquinazoline;

[0054] Add M1 (175.8mmol, 1.1eq) and 300ml trifluoromethanesulfonic acid into a single-necked bottle, heat to 100°C, react for 6h, TLC monitors the disappearance of raw materials, add water to the reaction solution, filter, and rinse the filter cake with water and ethanol, Wash until the filtrate is a colorless clear liquid to obtain a brown solid M2;

[0055] Add 2-bromo-2'-chloro-biphenyl (110mmol, 1.1eq) and 500ml THF into a single-necked fla...

Embodiment 2

[0063] The synthesis of embodiment 2, A3

[0064] Add 100mmol of 2,4-dichloroquinazoline, 100mmol of 2-boronic acid methyl benzoate, 41.4g of potassium carbonate (300mmol), 800ml of DMF, 200ml of water and Pd(PPh 3 ) 4 , reacted at 120°C for 12h, after the reaction was completed, the reactant was cooled to room temperature, added water, filtered, washed with water, and the obtained solid was recrystallized and purified with toluene to obtain a white powder M1, wherein Pd(PPh 3 ) 4 The addition is 1mol% of 2,4-dichloroquinazoline;

[0065] Add M1 (175.8mmol, 1.1eq) and 300ml trifluoromethanesulfonic acid into a single-necked bottle, heat to 100°C, react for 6h, TLC monitors the disappearance of raw materials, add water to the reaction solution, filter, and rinse the filter cake with water and ethanol, Wash until the filtrate is a colorless clear liquid to obtain a brown solid M2;

[0066] Add M2 (100mmol, 1.0eq) and 500ml THF into a single-necked bottle, cool down to 0°C, a...

Embodiment 3、A7

[0076] The synthesis of embodiment 3, A7

[0077] Add 100mmol of 2,4-dichloroquinazoline, 100mmol of 2-boronic acid methyl benzoate, 41.4g of potassium carbonate (300mmol), 800ml of DMF, 200ml of water and Pd(PPh 3 ) 4 , reacted at 120°C for 12h, after the reaction was completed, the reactant was cooled to room temperature, added water, filtered, washed with water, and the obtained solid was recrystallized and purified with toluene to obtain a white powder M1, wherein Pd(PPh 3 ) 4 The addition is 1mol% of 2,4-dichloroquinazoline;

[0078] Add M1 (175.8mmol, 1.1eq) and 300ml trifluoromethanesulfonic acid into a single-necked bottle, heat to 100°C, react for 6h, TLC monitors the disappearance of raw materials, add water to the reaction solution, filter, and rinse the filter cake with water and ethanol, Wash until the filtrate is a colorless clear liquid to obtain a brown solid M2;

[0079] Add M2 (100mmol, 1.0eq) and 500ml THF into a single-necked bottle, cool down to 0°C, a...

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PUM

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Abstract

The invention discloses an electron transport material shown as a general formula I, which can be used as an electron transport layer of an organic light-emitting device in a display device. The electron transport material provided by the invention has a diversified fused heterocyclic parent structure, high bond energy between atoms, good thermal stability and strong electron transition capability, is beneficial to intermolecular solid accumulation, can effectively reduce the driving voltage of an organic light-emitting device when used as an electron transport layer material, the current efficiency of the organic light-emitting device is improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of light emitting display, in particular to an electron transport material, an organic electroluminescent device and a display device. Background technique [0002] Electroluminescence (Electroluminescence, EL) refers to the phenomenon that light-emitting materials are excited by current and voltage under the action of an electric field to emit light. It is a light-emitting process that directly converts electrical energy into light energy. Organic electroluminescent display (hereinafter referred to as OLED) has a series of advantages such as self-luminescence, low-voltage DC drive, full curing, wide viewing angle, light weight, simple composition and process, etc. Compared with liquid crystal display, organic electroluminescent display is not It requires a backlight source, has a large viewing angle and low power, and its response speed can reach 1000 times that of a liquid crystal display, but its manufact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D403/10C07D401/10C07D471/06C07D239/70C07D403/14C07D405/14H01L51/54
CPCC07D403/10C07D401/10C07D471/06C07D239/70C07D403/14C07D405/14H10K85/615H10K85/654H10K85/6574H10K85/6572
Inventor 邢其锋丰佩川陈雪波孙伟胡灵峰陈跃马艳
Owner YANTAI-JINGSHI INST OF MATERIAL GENOME ENG
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