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Organic compound and electroluminescent application thereof

An organic compound and fusion technology, applied in organic chemistry, luminescent materials, circuits, etc., can solve the problems of high driving voltage, insufficient life, and insufficient efficiency, and achieve stability, wide hole and electron transmission, and reduced The effect of phase separation

Active Publication Date: 2022-03-11
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing phosphorescent host materials still have the problems of insufficient lifespan, insufficient efficiency and relatively high driving voltage, which cannot meet the application requirements of them as light-emitting materials in display devices. The improvement and balance of comprehensive performance of phosphorescent host materials are still lacking. has a lot of room for improvement

Method used

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  • Organic compound and electroluminescent application thereof
  • Organic compound and electroluminescent application thereof
  • Organic compound and electroluminescent application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0063] According to an embodiment of the display panel of the present invention, the light emitting layer includes a blue light emitting layer, and the host material is a blue host material.

[0064] According to an embodiment of the display panel of the present invention, the light emitting layer includes a green light emitting layer, and the host material is a green light host material.

[0065]In one embodiment of the display panel provided by the present invention, the light-emitting layer includes a host material and a guest material; the host material may also include 2,8-bis( Diphenylphosphinyl) dibenzothiophene, 4,4'-bis(9-carbazole)biphenyl, 3,3'-bis(N-carbazolyl)-1,1'-biphenyl, 2 ,8-bis(diphenylphosphinooxy)dibenzofuran, bis(4-(9H-carbazolyl-9-yl)phenyl)diphenylsilane, 9-(4-tert-butylphenyl) -3,6-bis(triphenylsilyl)-9H-carbazole, bis(2-diphenylphosphine oxide) diphenyl ether, 1,3-bis[3,5-bis(pyridine-3- Base) phenyl] benzene, 4,6-bis(3,5-bis(3-pyridinyl)phenyl)-2-m...

Embodiment 1

[0073] Example 1: Compound H59

[0074] The preparation method of this organic compound H59 comprises the steps:

[0075]

[0076] (1) Synthesis of H59-2: In a 250mL round bottom flask, reactant H59-1 (10mmol), reactant A-59 (12mmol) and Na 2 CO 3 (80mmol) was added to toluene / EtOH (absolute ethanol) / H 2 In O (75 / 25 / 50, mL) solvent, a mixed solution was formed, and then Pd(PPh 3 ) 4 (0.48mmol) was added in the above-mentioned mixed solution, carried out reflux reaction under nitrogen atmosphere 20 hours and the intermediate obtained was cooled to room temperature, added in water, filtered through diatomaceous earth pad then, extracted with dichloromethane simultaneously, washed with water then, And dried over anhydrous magnesium sulfate, filtered and evaporated, the crude product was purified by silica gel column chromatography to obtain compound H59-2.

[0077] (2) Synthesis of H59-3: Compound H59-2 (4mmol) obtained in step (1) and bis(triphenylphosphine)palladium dic...

Embodiment 2

[0081] Example 2: Compound H60

[0082] The preparation method of this organic compound H60 comprises the steps:

[0083]

[0084] The synthesis method of compound H60 is similar to that of H59, the difference is that the reactant A-59 in step (1) is replaced by an equimolar amount of A-60.

[0085] MALDI-TOF: m / z: Calculated: C 63 h 37 N 5 o 2 :895.29, measured value: 895.33.

[0086] Compound elemental analysis results: Calculated value: C 63 h 37 N 5 o 2 (%): C, 84.45; H, 4.16; N, 7.82; O, 3.57; Test value: C, 84.45;

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Abstract

The invention discloses an organic compound. The organic compound has a structure as shown in a formula (I). Compared with the prior art, the organic compound provided by the invention as a Host material has good thermal stability and film-forming property and proper glass transition temperature Tg, is beneficial to forming a stable and uniform thin film in a thermal vacuum evaporation process, reduces phase separation, maintains the stability of a device, and improves the performance of the device. Moreover, the organic electroluminescent material has a high carrier transmission rate and balanced carrier transmission performance, thereby facilitating the balance of hole and electron transmission in a device, obtaining a wide carrier recombination region, and improving the luminous efficiency.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence, in particular to an organic compound and the application of electroluminescence. 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 mechanism of light emission, it can be divided into two types: electrofluorescence and electrophosphorescence. Fluorescence is the radiative decay transition of singlet excitons, and phosphorescence is the light emitted by the radiative decay of triplet excitons to the ground state. According to the spin quantum stati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D491/153C07D495/14C09K11/06H01L51/50H01L51/54
CPCC07D491/153C07D495/14C09K11/06C09K2211/1029C09K2211/1044C09K2211/1059C09K2211/1048C09K2211/1051H10K85/631H10K85/636H10K85/654H10K85/657H10K85/6572H10K50/11H10K2101/10
Inventor 邓东阳高威匡立莲
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD