Compound, display panel and display device

A compound and connection position technology, applied in the field of organic electroluminescent materials, can solve the problem of difficulty in developing doping materials, and achieve the effect of reducing the efficiency roll-off and improving the luminous brightness and luminous efficiency

Active Publication Date: 2020-11-27
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current research status, the commercialization of heavy metal doping materials is mature, and it is difficult to develop alternative doping materials

Method used

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  • Compound, display panel and display device
  • Compound, display panel and display device
  • Compound, display panel and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Synthesis of Compound H001

[0077]

[0078] In a 250ml round bottom flask, 4,4'-dibromo-diphenyl ether (15mmol), copper iodide (15mmol), potassium tert-butoxide (65mmol), 1,2-diaminocyclohexane (12mmol) and diarylamine (25mmol) were added to dry 1,4-dioxane (400ml) under N 2 Refluxed under atmosphere for 48 hours, the resulting intermediate was cooled to room temperature, added to water, then filtered through a pad of diatomaceous earth, while extracting with dichloromethane, then washed with water, and dried with anhydrous magnesium sulfate, filtered and evaporated, with The crude product was purified by silica gel column chromatography to obtain the intermediate product H001-1.

[0079] In a 250 ml round bottom flask, the intermediate product H001-1 (15 mmol) and potassium acetate (40 mmol) were mixed with dry 1,4-dioxane (60 mL), Pd(PPh 3 ) 2 Cl 2 (0.4mmol) and pinacol diboronate (25mmol) were mixed, and stirred at 90° C. under a nitrogen atmosphere for 48 ho...

Embodiment 2

[0083] Synthesis of Compound H013

[0084]

[0085] In a 250ml round bottom flask, mix 4,4'-dibromo-1-thiodiphenyl (15mmol), copper iodide (15mmol), potassium tert-butoxide (65mmol), 1,2-diaminocyclohexane (12mmol) and 5,10-dihydrophenazine (25mmol) were added to dry 1,4-dioxane (400 ml), under N 2 Refluxed under atmosphere for 48 hours, the resulting intermediate was cooled to room temperature, added to water, then filtered through a pad of diatomaceous earth, while extracting with dichloromethane, then washed with water, and dried with anhydrous magnesium sulfate, filtered and evaporated, with The crude product was purified by silica gel column chromatography to obtain the intermediate product H013-1.

[0086] In a 250 ml round bottom flask, the intermediate product H013-1 (15 mmol) and potassium acetate (40 mmol) were mixed with dry 1,4-dioxane (60 mL), Pd(PPh 3 ) 2 Cl 2 (0.4mmol) and pinacol diboronate (25mmol) were mixed, and stirred at 90° C. under a nitrogen atmo...

Embodiment 3

[0090] Synthesis of Compound H024

[0091]

[0092] In a 250ml round bottom flask, mix 4,4'-dibromo-diphenyldimethylpropane (15mmol), copper iodide (15mmol), potassium tert-butoxide (65mmol), 1,2-diaminocyclohexane Alkane (12mmol) and 9H-carbazole (25mmol) were added to dry 1,4-dioxane (400ml) in N 2 Refluxed under atmosphere for 48 hours, the resulting intermediate was cooled to room temperature, added to water, then filtered through a pad of diatomaceous earth, while extracting with dichloromethane, then washed with water, and dried with anhydrous magnesium sulfate, filtered and evaporated, with The crude product was purified by silica gel column chromatography to obtain the intermediate product H024-1.

[0093] In a 250 ml round bottom flask, the intermediate product H024-1 (15 mmol) and potassium acetate (40 mmol) were mixed with dry 1,4-dioxane (60 mL), Pd(PPh 3 ) 2 Cl 2 (0.4mmol) and pinacol diboronate (25mmol) were mixed, and stirred at 90° C. under a nitrogen at...

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Abstract

The invention belongs to the field of OLED technology and provides a compound used as a host material, which has a structure of formula (I); wherein X is selected from C, O, S, Se, Si or Te atoms; a and b represent electron donors respectively The number of body D and electron acceptor A is selected from 1, 2 or 3, c and d are respectively selected from 0, 1 or 2; L 1 , L 2 And the electron donor D is each independently selected from alkyl, cycloalkyl, heterocyclyl, aryl, heteroaryl, fused aryl or fused heteroaryl; electron acceptor A is selected from nitrogen-containing heterocycle, cyanide-containing group, a phosphorus-containing oxygen-containing substituent, or a triarylboron substituent. The D-(π)-σ-(π)-A structure in the compound of the present invention has bipolarity, and the σ bond can effectively break the intramolecular charge transport between the electron donor D and the electron acceptor A, making the excited state The local excited state in the segment limited to D or A, so that the compound has a small excited state dipole moment, when it is used as the host material of the light-emitting layer, it can effectively reduce the efficiency roll-off of the blue light material, improve the luminous brightness and Luminous efficiency.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescent materials, in particular to a compound, a display panel and a display device including the compound. 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] According to the luminescence mechanism, it can be divided into two types: electrofluorescence and electrophosphorescence. Fluorescence is the radiation decay transition of singlet excitons, and phosphorescence is the light emitted by triplet excitons decaying to the ground state. According to the spin quantum statist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D213/38C07D251/24C07D279/22C07D401/10C07D401/12C07D403/10C07D403/12C07D413/12C07D417/10C07D417/12C07D471/04C07D471/14C07F9/6553C07F9/6558C09K11/06H01L51/54
CPCC09K11/06C07D213/38C07D251/24C07D279/22C07D401/10C07D401/12C07D403/10C07D403/12C07D413/12C07D417/10C07D417/12C07D471/04C07D471/14C07F9/655354C07F9/65586C09K2211/1029C09K2211/1044C09K2211/1037C09K2211/1059C09K2211/1092H10K85/631H10K85/654H10K85/6576H10K85/657H10K85/6572
Inventor 张磊高威牛晶华代文朋
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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