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 effects of reducing efficiency roll-off, improving luminous brightness and luminous efficiency

Active Publication Date: 2019-04-02
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 technical field of OLED, and provides a compound used as a host material. The compound has a structure as shown in a formula (I) which is described in the specification. In the formula (I), X is selected from the group consisting of C, O, S, Se, Si and Te atoms; a and b respectively represent the number of an electron donor D and an electron acceptor A and are respectively selected from the group consisting of 1, 2 and 3; c and d are respectively selected from the group consisting of 0, 1 and 2; L1, L2 and the electron donor D are respectively and independently selected from the group consisting of an alkyl group, a cycloalkyl group, a heterocyclic group, an aryl group, a heteroaryl group, a fused aryl group and a fused heteroaryl group; and the electrozxn acceptor A is selected from the group consisting of an azacycle-containing substituent, a cyano-containing substituent, a phosphoxy-containing substituent and a triaryl boron substituent. The compound provided by the invention has a D-(pi)-sigma-(pi)-A structure with bipolarity, and a sigma bond can effectively interrupt the intramolecular charge transfer between the electron donor D and the electronacceptor A, and limits an excited state to be a local excited state in a segment of D or A, so the compound has a dipole moment with a small excited state; and when the compound is used as the host material of a luminescent layer, the compound can effectively reduce the efficiency roll-off of a blue light material and improves luminescent brightness and luminescent 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 Applications(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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