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Organic electroluminescent compound and preparation method thereof and organic electroluminescent device

A compound and luminescent technology, applied in organic chemistry, electrical solid devices, electrical components, etc., can solve the problems of low lifespan, complex synthesis process, time-consuming, etc., achieve good thermal stability, simple preparation route, and excellent performance Effect

Inactive Publication Date: 2020-05-15
JILIN OPTICAL & ELECTRONICS MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the complex synthesis process of existing organic electroluminescent compounds, which takes a long time and has a low lifespan, it is necessary to choose a more suitable and high-performance electroluminescent compound for the current industrial application requirements of OLED devices and the requirements for optoelectronic characteristics of OLED devices. In order to achieve the comprehensive characteristics of high efficiency, long life and low voltage of the device, the further development of organic electroluminescent compounds is imminent

Method used

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  • Organic electroluminescent compound and preparation method thereof and organic electroluminescent device
  • Organic electroluminescent compound and preparation method thereof and organic electroluminescent device
  • Organic electroluminescent compound and preparation method thereof and organic electroluminescent device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030]

[0031] Add reactant 1-1 (50mmol) and reactant 1-2 (55mmol), (100mmol) sodium tert-butoxide, 1mmol bis-palladium, into 150ml toluene, raise the temperature to 110°C under nitrogen protection and stir for 12 hours. After the reaction was completed, it was washed with water at room temperature, separated, the organic phase was concentrated, precipitated with petroleum ether, and filtered to obtain intermediate 1-3 (18.2 g, yield 80%, MW: 454.47).

[0032] The intermediates shown in Table 1 below can be synthesized according to the method for synthesizing intermediates 1-3 above.

[0033] Table 1 Example 1 reaction raw materials and product structure and characterization summary

[0034]

[0035]

Embodiment 2

[0037]

[0038] Add 40mmol of intermediate 1-3 into 160mL of triethyl phosphite, raise the temperature to 120°C and stir for 6h. After the reaction was completed, water was slowly added at room temperature, the solid was precipitated by stirring, and dried by filtration to obtain intermediate 1-4 (12.8 g, yield 76%, MW: 422.94).

[0039] The intermediates shown in Table 2 below can be synthesized according to the method for synthesizing intermediates 1-4, but not limited to the following intermediates.

[0040] Table 2 Example 2 reaction raw materials and product structure and characterization summary

[0041]

[0042]

Embodiment 3

[0044]

[0045] Dissolve intermediate 1-4 (30mmol) in toluene, add reactant 1-5 (33mmol), add Pd under nitrogen protection 2 (dba) 3 (0.3mmol), tri-tert-butylphosphine (3mmol), sodium tert-butoxide (90mmol), heated to reflux and stirred for 12 hours. After the reaction was completed, add water to wash at room temperature, separate and concentrate the product solution, precipitate with petroleum ether, and filter to obtain intermediate 1-6 (13.3 g, yield: 77%, MW: 576.85).

[0046] The intermediates shown in Table 3 below can be synthesized according to the method for synthesizing intermediates 1-6.

[0047] Table 3 Example 3 reaction raw materials and product structure and characterization summary

[0048]

[0049]

[0050]

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Abstract

The invention relates to the technical field of organic luminescent materials, and in particular, relates to an organic light-emitting compound and a preparation method thereof and an organic electroluminescent device. The structural formula of the compound is shown in the specification; the compound has good thermal stability and a simple preparation route, and the organic electroluminescent device containing the compound has excellent luminous efficiency and long service life, is an organic electroluminescent compound with excellent performance, and has simplicity, maturity and repeatabilityin preparation.

Description

technical field [0001] The invention relates to the technical field of organic luminescent materials, in particular to an organic electroluminescent compound, a preparation method thereof and an organic electroluminescent device. Background technique [0002] Organic light-emitting diode (Organic Light-Emitting Diode, OLED) is also called organic electro-laser display, organic light-emitting semiconductor. It was discovered in the laboratory by Chinese-American professor Ching W.Tang in 1979. OLED display technology has the advantages of self-illumination, wide viewing angle, almost infinitely high contrast, low power consumption, and extremely high response speed. However, as a high-end display, the price will be more expensive than LCD TVs. [0003] The self-illumination characteristic of OLED display technology adopts very thin organic material coating and glass substrate. This display device has been used in MP3 players since 2003. Since then, it has gradually entere...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D471/06C09K11/06H01L51/54H01L51/50
CPCC07D471/06C09K11/06C09K2211/1092C09K2211/1044C09K2211/1014C09K2211/1011H10K85/615H10K85/631H10K85/626H10K85/633H10K85/6576H10K85/6572H10K50/15
Inventor 马晓宇陈振生汪康王永光王士凯金成寿闫明林
Owner JILIN OPTICAL & ELECTRONICS MATERIALS
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