Compound, display panel and display device

A compound and connection position technology, which is applied in the field of organic electroluminescent materials, can solve problems such as the difficulty in developing doped materials, and achieve the goals of improving equilibrium migration, improving light extraction efficiency, high glass transition temperature and molecular thermal stability Effect

Inactive Publication Date: 2019-03-12
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

[0082] Synthesis of Compound H004

[0083]

[0084] In a 250mL round-bottomed flask, mix 1,1-bis(4-iodophenyl)cyclohexane (15mmol), copper iodide (15mmol), potassium tert-butoxide (65mmol), 1,2-diaminocyclohexane Alkane (12mmol) and diarylamine (25mmol) were added to dry 1,4-dioxane (400mL), refluxed under nitrogen atmosphere for 48 hours, the resulting intermediate was cooled to room temperature, added to water, and passed through silicon After filtration 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 product was purified by silica gel column chromatography to obtain intermediate product H004-1.

[0085] In a 250 mL round bottom flask, intermediate H004-1 (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 n...

Embodiment 2

[0089] Synthesis of compound H022

[0090]

[0091] In a 250mL round-bottomed flask, mix 1,1-bis(4-iodophenyl)cyclohexane (15mmol), copper iodide (15mmol), potassium tert-butoxide (65mmol), 1,2-diaminocyclohexane Alkane (12mmol) and 9-carbazole (25mmol) were added to dry 1,4-dioxane (400mL), refluxed under nitrogen atmosphere for 48 hours, the obtained intermediate was cooled to room temperature, added to water, and passed through It was filtered through a celite pad, and the filtrate was extracted with dichloromethane, washed with water, and dried over anhydrous magnesium sulfate. After filtration and evaporation, the crude product was purified by silica gel column chromatography to obtain the intermediate product H013-1.

[0092] In a 250 mL round bottom flask, intermediate 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 nitrog...

Embodiment 3

[0096] Synthesis of Compound H048

[0097]

[0098] In a 250mL round-bottomed flask, mix 1,1-bis(4-iodophenyl)cyclohexane (15mmol), copper iodide (15mmol), potassium tert-butoxide (65mmol), 1,2-diaminocyclohexane Alkane (12mmol) and 9,9-dimethylacridine (25mmol) were added to dry 1,4-dioxane (400mL), refluxed under nitrogen atmosphere for 48 hours, and the obtained intermediate was cooled to room temperature, Added to water, then filtered through a pad of celite, the filtrate was extracted with dichloromethane, then washed with water, and dried over anhydrous magnesium sulfate, after filtration and evaporation, the crude product was purified by silica gel column chromatography to give intermediate product H048-1.

[0099] In a 250 mL round bottom flask, intermediate H048-1 (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 atmosph...

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Abstract

The invention belongs to the technical field of OLED and provides a compound used as a main body material. The compound has a structure shown as formula (I) (the formula is shown in description), wherein a and b respectively represent the number of electron donors D and the number of electron acceptors A and are respectively selected from 1, 2 or 3; c and d are respectively selected from 0, 1 or 2; L1 and L2 and the electron donors D are respectively independently selected from alkyl, cycloalkylene, heterocyclyl, aryl, heteroaryl, fused aryl or fused heteroaryl; the electron acceptors A are selected from substituent groups containing nitrogen heterocyclic ring, cyan and phosphoxyl or triaryl boron substituent groups. A D-(pi)-sigma-(pi)-A structure in the compound has bipolarity; the sigmabond is capable of effectively breaking intramolecular charge transfer between the electron donors D and the electron acceptors A, so that excitation state is limited into local-area excitation statein fragments of D or A, so that the compound is enabled to have small excitation state dipole moments; when the compound is used as a main body material of a light-emitting layer, the efficiency roll-off of a blue-light material can be effectively reduced; the light-emitting brightness and the light-emitting efficiency are improved.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescent materials, in particular to a compound used as an OLED light-emitting host material, a display panel and a display device containing 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 light-emitting mechanism, the light emitted by OLED can be divided into two types: electroluminescence and electrophosphorescence. Fluorescence is the light emitted by the radiative decay transition of singlet excitons, and phosphorescence is the light emi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D213/38C07D213/85C07D401/10C07D403/10C07D401/14C07D239/26C07D413/10C07D413/14C07D417/10C07D417/14C07D471/04C07D487/04C07F9/53C07F9/655C07F9/6553C07F9/572C07F9/6558C07F9/6533C07F5/02C09K11/06H01L51/50H01L51/54
CPCC09K11/06C07D213/38C07D213/85C07D239/26C07D401/10C07D401/14C07D403/10C07D413/10C07D413/14C07D417/10C07D417/14C07D471/04C07D487/04C07F5/027C07F9/5325C07F9/5728C07F9/65335C07F9/65517C07F9/655354C07F9/65583C07F9/65586C09K2211/1007C09K2211/1029C09K2211/1014C09K2211/1044C09K2211/104C09K2211/1033C09K2211/1059C09K2211/1092C09K2211/1088C09K2211/1096H10K85/6576H10K85/6574H10K85/657H10K85/6572H10K50/11C07D251/24C07D403/14C07F9/53H10K85/636H10K85/654H10K85/342H10K50/125H10K2101/10H10K50/15H10K50/16H10K2101/30
Inventor 张磊高威牛晶华李杨卢艳黄高军
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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