Organic compound and organic electroluminescent device using same

An organic compound and compound technology, applied in the fields of triphenylamine derivatives and organic electroluminescent devices, can solve the problems of low glass transition temperature of blue phosphorescent materials, low material stability, and obstacles to widespread use, so that it is not easy to crystallize and decompose , Balance the transmission of holes and electrons, and improve the effect of life

Pending Publication Date: 2020-12-11
ZHEJIANG HUADISPLAY OPTOELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims to solve the problems that commonly used blue phosphorescent materials have low glass transition temperature, low stability of the material itself, and high efficiency roll-off under high luminance, hindering its widespread use, and provides an organic compound, its synthesis Method and its application in the field of organic electroluminescence

Method used

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  • Organic compound and organic electroluminescent device using same
  • Organic compound and organic electroluminescent device using same
  • Organic compound and organic electroluminescent device using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039]Example 1: Synthesis of compound C-1

[0040]

[0041]Add L (7.1g, 10.6mmol), 3-methyldiphenylamine (4.7g, 25.4mol), Pd in ​​a 250mL round bottom flask2(dba)3(0.08g, 0.4mmol), sodium tert-butoxide (3.4g, 0.035mol), tri-tert-butylphosphine (0.07g, 0.4mmol), toluene 60mL, and reflux and stir for 2 hours. After the reaction is completed, cool at room temperature. The reaction solution was extracted with dichloromethane and water. The organic layer was separated, dried with magnesium sulfate, and then concentrated under reduced pressure. The substance was separated and purified by column chromatography, and then recrystallized with dichloromethane and acetone to obtain compound C-1 (7.4 g, 85%). Mass spectrum m / z, theoretical value: 871.03; actually measured value: 870.32.

Embodiment 2

[0042]Example 2: Preparation of compound C-23

[0043]The synthesis method in Example 1 was used to obtain compound C-23. Mass spectrum m / z, theoretical value: 1039.28; measured value: 1038.43.

Embodiment 3

[0044]Example 3: Preparation of compound C-29

[0045]The synthesis method in Example 1 was used to obtain compound C-29. Mass spectrum m / z, theoretical value: 650.72; measured value: 650.21.

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PUM

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Abstract

The invention discloses an organic compound applied to the field of organic electroluminescence and an organic electroluminescent device using the organic compound. The molecular structural formula ofthe organic compound is shown as a structural formula 1. The organic electroluminescent material is a composition of two compounds, the highest occupied molecular orbital energy level, hole mobilityand glass-transition temperature are high, so that the solubility, amorphous film-forming property, stability and phosphorescence property are good, the organic electroluminescent material is appliedto OLED devices as a combined organic light-emitting main body material layer, the light-emitting efficiency of the devices can be remarkably improved, the service life of the devices can be remarkably prolonged, and the driving voltage of the devices can be reduced; and the organic electroluminescent material is an OLED material with excellent performance.

Description

Technical field[0001]The present invention relates to an organic compound in the field of organic electroluminescence and an organic electroluminescence device using the compound, specifically a triphenylamine derivative and an organic electroluminescence device using the compound.Background technique[0002]Organic light emitting devices (OLED: Organic Light Emisson Diodes) have the advantages of wide viewing angle, fast response speed, high color quality, and flexible light emission, and have broad application prospects. OLED devices usually have a sandwich-like structure, including positive and negative electrode film layers and organic functional material layers sandwiched between the electrode film layers. A voltage is applied to the electrodes of the OLED device, positive charges are injected from the positive electrode, and negative charges are injected from the negative electrode. Under the action of an electric field, the positive and negative charges migrate in the organic l...

Claims

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Application Information

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IPC IPC(8): C07D493/04C07F7/08C09K11/06H01L51/50H01L51/54
CPCC07D493/04C07F7/0814C09K11/06C09K2211/1011C09K2211/1014C09K2211/1029C09K2211/1088C09K2211/1092H10K85/622H10K85/615H10K85/626H10K85/6576H10K85/6574H10K85/40H10K50/12H10K50/11
Inventor 高春吉王世超朱克克
Owner ZHEJIANG HUADISPLAY OPTOELECTRONICS CO LTD
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