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A kind of oxygen-containing organic electrophosphorescent material and its application

A phosphorescent material and electromechanical technology, applied in luminescent materials, organic chemistry, indium organic compounds, etc., can solve the problems of low phosphorescence efficiency, hindering commercialization, poor stability and lifespan, etc., to reduce purity and improve thermal stability sex, life extension effect

Active Publication Date: 2022-06-24
北京燕化集联光电技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in the U.S. patent of US6687266, a class of iridium (Ir) complexes containing benzimidazole ligands is disclosed. Because this type of compound has low phosphorescence efficiency, serious problems of poor stability and lifespan, it hinders its commercial use. the possibility of

Method used

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  • A kind of oxygen-containing organic electrophosphorescent material and its application
  • A kind of oxygen-containing organic electrophosphorescent material and its application
  • A kind of oxygen-containing organic electrophosphorescent material and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Example 1: Synthesis of Ligand P1

[0066]

[0067] The synthetic route is as follows:

[0068]

[0069] The specific experimental steps are:

[0070] (1) in the 2L there-necked flask equipped with mechanical stirring, add 2-fluoronitrobenzene (14.1g, 0.1mol), 2-bromoaniline (25.7g, 0.15mol), stir, argon protection, be warming up to 180 ℃, keep the reaction for more than 30 hours, during the reaction, the color gradually becomes red, and finally gradually becomes dark red. After the reaction, the organic phase was separated, extracted, dried, subjected to column chromatography, and the solvent was spin-dried to obtain 24.8 g of orange-red solid M1 with a yield of 85%.

[0071] (2) In a 1L three-necked flask equipped with mechanical stirring, add M1 (29.2g, 0.1mol), sodium sulfide nonahydrate (96g, 0.4mol), ethanol (200mL), water (100mL), nitrogen protection, heat to Reflux, the reaction was refluxed for 3 hours, and the reaction was terminated. The organic pha...

Embodiment 2

[0076] Example 2: Synthesis of Ligand P2

[0077]

[0078] With reference to the synthesis steps of Example 1, only in step (3), 2-bromo-4-methylbenzoyl chloride is used instead of o-bromobenzoyl chloride, and other raw materials and steps are the same as those in Example 1 to obtain ligand P2.

[0079] Product MS (m / e): 298.11; elemental analysis (C 20 H 14 N 2 O): theoretical value C: 80.52%, H: 4.73%, N: 9.39%; actual value C: 80.67%, H: 4.87%, N: 9.23%.

Embodiment 3

[0080] Example 3: Synthesis of Ligand P3

[0081]

[0082] Referring to the synthesis steps of Example 1, except that 2-bromo-4-methylaniline is used instead of 2-bromoaniline in step (1), other raw materials and steps are the same as those in Example 1, to obtain ligand P3.

[0083] Product MS (m / e): 298.11; elemental analysis (C 20 H 14 N 2 O): theoretical value C: 80.52%, H: 4.73%, N: 9.39%; actual value C: 80.67%, H: 4.85%, N: 9.21%.

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PUM

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Abstract

The invention relates to the technical field of organic electroluminescent display, specifically discloses a novel organic electroluminescent material containing O, and also discloses its application in organic electroluminescent devices. The O-containing organic electrophosphorescent material provided by the present invention has a structure represented by the general formula (I). The organic electroluminescent material of the invention is applied to an organic electroluminescent device, and the prepared electroluminescent device exhibits superior performances of high purity, high brightness and high efficiency.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence display, specifically discloses a novel O-containing organic electrophosphorescence material, and also discloses its application in organic electroluminescence devices (OLEDs). Background technique [0002] Electroluminescence display devices can be divided into inorganic electroluminescence display devices and organic electroluminescence display devices according to the different materials constituting the light-emitting layer. Compared with inorganic EL display devices, organic EL display devices have incomparable advantages, such as full-color emission in the visible spectral range, extremely high brightness, extremely low driving voltage, fast response time, and simple fabrication craftsmanship, etc. [0003] The research on organic electroluminescence started in the 1860s, when Pope first realized electroluminescence on anthracene single crystals, but at that time the dri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F15/00C09K11/06H01L51/54H01L51/50
CPCC07F15/0033C09K11/06C09K2211/1029C09K2211/1048C09K2211/1033C09K2211/1007C09K2211/1011H10K85/342H10K50/11
Inventor 段陆萌温洁范洪涛梁现丽杭德余曹占广班全志
Owner 北京燕化集联光电技术有限公司
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