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Organic compound, display panel and display device

An organic compound and bonding technology, applied in silicon organic compounds, isotope introduction of organic compounds, organic chemistry, etc., can solve the problems of low cost, high luminous efficiency, and long service life, and achieve low cost, high current efficiency, and long life. The effect of service life

Pending Publication Date: 2022-07-22
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present application provides an organic compound, a display panel and a display device, aiming to solve the problem that the organic light-emitting device in the display panel cannot simultaneously have high luminous efficiency, strong stability, long service life and low cost

Method used

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  • Organic compound, display panel and display device
  • Organic compound, display panel and display device
  • Organic compound, display panel and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0116] Preparation of organic compounds 1

[0117] Raw material A (5.52 g, 40 mmol), raw material B (11.2 g, 50 mmol) and 5 g of Na 2 CO 3 Put it into a three-necked flask, add 80 ml of chloroform solvent to dissolve the above compound, stir and heat up to 80° C. to condense and reflux, and keep for 12 hours. After cooling to room temperature, 100 ml of n-hexane was added, and the mixture was stirred uniformly. The mixture was filtered to obtain a solid, which was continuously washed with acetone to obtain 13.4 g of Intermediate 1 in total.

[0118] To a 400 ml flask containing intermediate 1 (1.06 g, 3 mmol) and o-dichlorotoluene under nitrogen atmosphere was added boron tribromide (1.3 ml, 12 mmol) reagent. After completion of the dropwise addition, the temperature was raised to 160° C., stirred for 24 hours, and cooled to room temperature. Add N,N-diisopropylethylamine (22 ml, 3.35 mmol) and stir until exothermic. The solvent was then distilled off under reduced pressu...

Embodiment 2

[0121] Preparation of organic compounds 93

[0122] Raw material C 20 mmol, raw material D 50 mmol, raw material E 20 mmol and 5 g Na 2 CO 3 Put it into a three-necked flask, add 80 ml of chloroform solvent to dissolve the above compound, stir and heat up to 80° C. to condense and reflux, and keep for 12 hours. After cooling to room temperature, 100 ml of n-hexane was added, and the mixture was stirred uniformly. The mixture was filtered to give a solid which was washed continuously with acetone to give 10 mmol of Intermediate 2 in total.

[0123] To a 400 ml flask containing 3 mmol of intermediate 2 and o-dichlorotoluene was added 1.3 ml (12 mmol) of boron tribromide reagent under nitrogen atmosphere. After completion of the dropwise addition, the temperature was raised to 160° C., stirred for 24 hours, and cooled to room temperature. After completion of the dropwise addition, the temperature was raised to 160° C., stirred for 24 hours, and cooled to room temperature. Ad...

Embodiment 3

[0127] Preparation of organic compounds 101

[0128] 40 mmol of raw material F, 50 mmol of raw material G and 5 g of Na 2 CO 3 Put it into a three-necked flask, add 80 ml of chloroform solvent to dissolve the above compound, stir and heat up to 80° C. to condense and reflux, and keep for 12 hours. After cooling to room temperature, 100 ml of n-hexane was added, and the mixture was stirred uniformly. The mixture was filtered to give a solid which was washed continuously with acetone to give 32 mmol of Intermediate 4 in total.

[0129] To a 400 ml flask containing 3 mmol of intermediate 4 and o-dichlorotoluene was added 1.3 ml (12 mmol) of boron tribromide reagent under nitrogen atmosphere. After completion of the dropwise addition, the temperature was raised to 160° C., stirred for 24 hours, and cooled to room temperature. After completion of the dropwise addition, the temperature was raised to 160° C., stirred for 24 hours, and cooled to room temperature. Add N,N-diisopro...

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Abstract

The invention discloses an organic compound, a display panel and a display device. The organic compound provided by the invention has a structure as shown in the following formula 1, under the synergistic effect of an electron-withdrawing group B atom and an electron-donating group N atom in a cyclic matrix, the organic compound has a relatively low mono-triplet state energy level difference, so that singlet state excitons and triplet state excitons can be simultaneously utilized to emit light, and the luminous efficiency of the organic compound is improved. The thermal activation delayed fluorescence luminescence is realized, and the luminous efficiency is improved. In addition, when the organic compound is used as a blue light doping material, the driving voltage of the organic light-emitting device can be effectively reduced, the current efficiency is improved, and the service life is prolonged.

Description

technical field [0001] The present application belongs to the technical field of organic light-emitting materials, and in particular relates to an organic compound, a display panel and a display device. Background technique [0002] An organic light emitting diode (OLED) is a self-luminous device that uses a light-emitting layer to generate electroluminescence. Behind the rapid development of OLED technology, organic light-emitting materials play a crucial role. At present, organic light-emitting materials can be divided into three categories according to the light-emitting mechanism: traditional fluorescent materials, phosphorescent materials and thermally activated delayed fluorescence (Thermally Activated Delayed Fluorescence, TADF) materials. Among them, under the condition of electro-excitation, traditional fluorescent materials are limited by the statistical law of spin quantum, and the highest external quantum efficiency (EQE) of OLED devices is only 5%. High reliab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/02C07F7/08C07B59/00C09K11/06H01L51/50H01L51/54
CPCC07F5/02C07F7/0814C07B59/002C09K11/06C07B2200/05C09K2211/1007C09K2211/1014C09K2211/1029C09K2211/1048C09K2211/1055C09K2211/1062C09K2211/107C09K2211/1077C09K2211/1085H10K85/636H10K85/631H10K85/6572H10K85/657H10K85/40H10K50/11
Inventor 华万鸣牛晶华林亚飞王建云武文慧张绍丽
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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