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Phosphorescent material and preparation method thereof and organic electroluminescent device

A phosphorescent material, C6-C60 technology, applied in the field of chemical synthesis and optoelectronic materials, can solve the problems of low lifespan, complex synthesis process, time-consuming and other problems, and achieve the effect of easy-to-obtain raw materials, simple synthesis process and high product yield

Inactive Publication Date: 2020-05-29
JILIN OPTICAL & ELECTRONICS MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the current synthesis process of phosphorescent materials is relatively complicated, time-consuming and has a short lifespan, further development of phosphorescent materials is imminent.

Method used

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  • Phosphorescent material and preparation method thereof and organic electroluminescent device
  • Phosphorescent material and preparation method thereof and organic electroluminescent device
  • Phosphorescent material and preparation method thereof and organic electroluminescent device

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Embodiment 1

[0032] This embodiment provides a phosphorescent material whose chemical structural formula is Formula 1 in the Summary of the Invention. The reaction route of the preparation method of the phosphorescent material is as follows:

[0033]

[0034] Its specific preparation method comprises the following steps:

[0035] 1) Preparation of Intermediate C-1: Add Compound A-1 (50mmol) and Compound B-1 (60mmol) to the reaction flask, then add Tetrakis(triphenylphosphine)palladium (0.25mmol) and potassium carbonate respectively (90mmol), then add about 400mL of toluene, ethanol and water mixture 2:1:1, and heat to 100°C for 24 hours. After the reaction was completed, the temperature was lowered, and the filtrate was retained by filtration to obtain the compound represented by Intermediate C-1 (17.8 g, 88%).

[0036] 2) Preparation of intermediate D-1: Under nitrogen protection, add intermediate C-1 (40mmol) into a 1L three-necked flask, add 300ml triethyl phosphite, heat up to 155°...

Embodiment 2

[0039] This embodiment provides a phosphorescent material whose chemical structural formula is formula 5 in the summary of the invention. The reaction route of the preparation method of the phosphorescent material is as follows:

[0040]

[0041] Its specific preparation method comprises the following steps:

[0042] 1) Preparation of Intermediate C-5: Add Compound A-5 (50mmol) and Compound B-5 (60mmol) to the reaction flask, then add Tetrakis(triphenylphosphine)palladium (0.25mmol) and potassium carbonate respectively (90mmol), then add about 400mL of toluene, ethanol and water mixture 2:1:1, and heat to 100°C for 24 hours. After the reaction was completed, the temperature was lowered, and the filtrate was retained by filtration to obtain the compound represented by Intermediate C-5 (17.8 g, 88%).

[0043] 2) Preparation of intermediate D-5: under nitrogen protection, add intermediate C-5 (40mmol) into a 1L three-necked flask, add 300ml triethyl phosphite, heat up to 155°...

Embodiment 3

[0046] This embodiment provides a phosphorescent material whose chemical structural formula is Formula 12 in the Summary of the Invention. The reaction route of the preparation method of the phosphorescent material is as follows:

[0047]

[0048] Its specific preparation method comprises the following steps:

[0049] 1) Preparation of Intermediate C-12: Add Compound A-12 (50mmol) and Compound B-12 (60mmol) to the reaction flask, then add tetrakis(triphenylphosphine)palladium (0.25mmol) and potassium carbonate respectively (90mmol), then add about 400mL of toluene, ethanol and water mixture 2:1:1, and heat to 100°C for 24 hours. After the reaction was completed, the temperature was lowered, and the filtrate was retained by filtration to obtain the compound represented by intermediate C-12 (17.8 g, 88%).

[0050] 2) Preparation of intermediate D-12: under nitrogen protection, add intermediate C-12 (40mmol) into a 1L three-necked flask, add 300ml triethyl phosphite, heat up ...

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Abstract

The invention discloses a phosphorescent material and a preparation method thereof and an organic electroluminescent device, and belongs to the field of chemical synthesis and photoelectric materials.The structural general formula is shown in the specification, in the formula, Ar represents one of a carbonyl group, C1-C60 alkyl groups, C2-C60 alkenyl groups, C6-C60 aryl groups, C2-C60 alkynyl groups, a 3-membered to 20-membered heteroaryl group, C3-C60 cycloalkyl groups, C1-C60 alkylamino groups, C6-C60 arylamino groups, C6-C60 aryloxy groups, a 3-membered to 20-membered heterocycloalkyl group, an alkyl silicon group, C6-C60 aryl silicon groups and adamantine group; at least one hydrogen atom on Ar is substituted or unsubstituted by a substituent. The phosphorescent material can be used as a light-emitting main body material of an organic light-emitting device, so that the light-emitting efficiency of the organic light-emitting device is improved and the service life of the organic light-emitting device is prolonged.

Description

technical field [0001] The invention relates to the fields of chemical synthesis and photoelectric materials, in particular to a phosphorescent material, a preparation method thereof and an organic electroluminescent device. Background technique [0002] Organic Light-Emitting Diode (OLED, Organic Light-Emitting Diode) is a hole and electron double-injection light-emitting device, which directly converts electrical energy into light energy of organic semiconductor material molecules. Compared with traditional CRT, LCD, PDP and other display devices, OLED takes into account all the advantages of existing displays, and at the same time has its own unique advantages, such as high brightness, high contrast, high definition, wide viewing angle, wide color gamut, etc. Realize high-quality images, and have the characteristics of ultra-thin, ultra-light, low driving voltage, low power consumption, and wide temperature to meet the needs of portable devices for lightness, power saving...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D471/16C09K11/06H01L51/50H01L51/54
CPCC07D471/16C09K11/06C09K2211/1007C09K2211/1011C09K2211/1044C09K2211/1029C09K2211/1088C09K2211/1092C09K2211/1096C09K2211/1059H10K85/622H10K85/615H10K85/624H10K85/653H10K85/626H10K85/654H10K85/655H10K85/657H10K85/6572H10K85/6576H10K85/6574H10K50/11
Inventor 马晓宇王永光孙峰于丹阳张思铭刘锟张颖
Owner JILIN OPTICAL & ELECTRONICS MATERIALS