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Organic light emitting compound and organic electroluminescent device using same

A compound and chemical formula technology, applied in the field of organic electroluminescent elements, can solve the problems of low glass transition temperature, low triplet energy, poor thermal stability, etc., and achieve the effect of excellent luminescence ability and improved efficiency

Pending Publication Date: 2020-03-31
SOLUS ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, conventional organic layer materials have a low glass transition temperature, poor thermal stability, and low triplet energy. Therefore, organic electroluminescent devices incorporating these materials into the organic layer cannot exhibit a satisfactory level of light emission. Current Efficiency and Lifetime Characteristics

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0197] [Synthesis Example 1] Synthesis of Compound 1

[0198]

[0199] Mix PPY-1 3.0g with (9,9-dimethyl-9H-fluoren-2-yl) boronic acid 4.3g and K 2 CO 3 3.3 g was mixed, and after adding 60 ml of toluene, 12 ml of ethanol and 12 ml of water, 500 mg of tetrakistriphenylphosphine palladium (0) was added, followed by heating and stirring for 4 hours. After the reaction, the temperature was lowered to normal temperature, and then filtered. Pour the filtrate into water, extract with chloroform, use MgSO 4 The organic layer was dried. After concentration under reduced pressure, column chromatography was performed at MC:Hex=2:1 to obtain 2.8 g of compound 1 as a white solid (55% yield).

[0200] Quality: [(M+H) + ]:502

Synthetic example 2

[0201] [Synthesis Example 2] Synthesis of Compound 2

[0202]

[0203] Mix 3.0g of PPY-1 with 5.1g of 9,9'-spirobis[fluorene]-2-ylboronic acid and K 2 CO 3 3.3 g was mixed, and after adding 60 ml of toluene, 12 ml of ethanol and 12 ml of water, 500 mg of tetrakistriphenylphosphine palladium (0) was added, followed by heating and stirring for 4 hours. After the reaction, the temperature was lowered to normal temperature, and then filtered. Pour the filtrate into water, extract with chloroform, use MgSO 4 The organic layer was dried. After concentration under reduced pressure, column chromatography was performed at MC:Hex=2:1 to obtain 3.2 g of compound 2 as a white solid (58% yield).

[0204] Quality: [(M+H) + ]:624

Synthetic example 3

[0205] [Synthesis Example 3] Synthesis of Compound 4

[0206]

[0207] Mix PPY-1 3.1g with (7,7-dimethyl-7H-benzo[c]fluoren-9-yl)boronic acid 4.8g and K 2 CO 3 3.3 g was mixed, and after adding 60 ml of toluene, 12 ml of ethanol and 12 ml of water, 500 mg of tetrakistriphenylphosphine palladium (0) was added, followed by heating and stirring for 4 hours. After the reaction, the temperature was lowered to normal temperature, and then filtered. Pour the filtrate into water, extract with chloroform, use MgSO 4 The organic layer was dried. After concentration under reduced pressure, column chromatography was performed at MC:Hex=2:1 to obtain 3.5 g of compound 4 as a white solid (yield 56%).

[0208] Quality: [(M+H) + ]:551

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Abstract

The present invention relates to a novel compound and an organic electroluminescent device comprising the same. The compound according to the present invention is used for an organic matter layer of an organic electroluminescent device, or preferably, for a light emitting layer, an auxiliary light emitting layer, an auxiliary electron transport layer, or an electron transport layer, thereby improving the luminous efficiency, driving voltage, lifespan, etc. of the organic electroluminescent device.

Description

technical field [0001] The present invention relates to a novel organic light-emitting compound and an organic electroluminescent device using the same. An organic electroluminescent element with improved characteristics such as voltage and lifetime. Background technique [0002] Starting from Bernanose's observation of organic thin film luminescence in the 1950s, research was carried out on organic electroluminescent devices developed from the blue electroluminescence of anthracene single crystals in 1965, and then in 1987 by Tang (Tang) proposed an organic electroluminescent element with a laminated structure divided into two functional layers, a hole layer and a light emitting layer. Afterwards, in order to manufacture high-efficiency and long-life organic electroluminescence elements, the form of introducing each characteristic organic substance layer into the element was developed, and the development of dedicated substances for this was carried out. [0003] In an or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D401/10C07D403/10H01L51/00H01L51/50
CPCC07D401/10C07D401/04C09K11/06C09K2211/1007C09K2211/1011C09K2211/1029C09K2211/1059C07D403/10H10K85/654H10K85/324H10K50/166H10K85/615H10K85/626H10K50/14H10K50/17H10K50/15H10K50/171
Inventor 朴祐材严玟植沈载依
Owner SOLUS ADVANCED MATERIALS CO LTD
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