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Fluorescent organic light emitting elements having high efficiency

A technology of organic light-emitting elements and light-emitting layers, which is used in organic semiconductor devices, photovoltaic power generation, electrical components, etc.

Inactive Publication Date: 2017-05-17
UDC IRELAND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0034] None of the documents mentioned above mentioned the TADF (Thermally Activated Delayed Fluorescence) feature of the disclosed compounds

Method used

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  • Fluorescent organic light emitting elements having high efficiency
  • Fluorescent organic light emitting elements having high efficiency
  • Fluorescent organic light emitting elements having high efficiency

Examples

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Effect test

example 1

[0231]

[0232] a) 4-Bromobenzonitrile (56mmol) and ethanol (35g) were placed in a 100ml flask. Acetyl chloride (448 mmol) was added slowly while stirring. The mixture was stirred overnight (15 hours) at room temperature. After the reaction was completed, ethanol was removed by evaporation, and the residue was washed with diethyl ether. A white solid was obtained by drying in vacuo. (Yield: 84.4%) The product was used in the next reaction without further purification.

[0233]

[0234] b) The product from Example 1a (11.3 mmol), triethylamine (24.9 mmol), 4-bromobenzoyl chloride (11.3 mmol) and 35 ml of dichloromethane were placed in a 100 ml flask. The mixture was stirred overnight (15 hours) at -15°C to room temperature. After the reaction was complete, dichloromethane was removed by evaporation, and the residue was washed with warm tetrahydrofuran. A white solid was obtained by drying in vacuo. (crude material, yield: 105%). The product was used in the next rea...

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PUM

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Abstract

An organic light-emitting element which emits delayed fluorescence comprising specifically substituted 1,2,4-triazole derivatives, 1,2,4-oxadiazole derivatives or 1,2,4-thiadiazole derivatives in the light-emitting layer, a light-emitting layer comprising the specifically substituted 1,2,4-triazole derivatives, 1,2,4-oxadiazole derivatives or 1,2,4-thiadiazole derivatives, specific specifically substituted 1,2, 4-triazole derivatives, 1,2,4-oxadiazole derivatives and 1,2,4-thiadiazole derivatives and an organic light emitting element comprising the specific 1,2,4-azole derivatives as well as a light emitting layer comprising the specific 1,2,4-azole derivatives; the use of the specifically substituted 1,2,4-triazole derivatives, 1,2,4-oxadiazole derivatives and 1,2,4-thiadiazole derivatives for electrophotographic photoreceptors, photoelectric converters, sensors, dye lasers, solar cell devices and organic light emitting elements, and the use of the specifically substituted 1,2,4-triazole derivatives, 1,2,4-oxadiazole derivatives and 1,2,4-thiadiazole derivatives for generating delayed fluorescence emission.

Description

technical field [0001] The present invention relates to an organic light-emitting element emitting delayed fluorescence, which comprises a specific substituted 1,2,4-triazole derivative, 1,2,4-oxadiazole derivative or 1,2, 4-Thiadiazole derivatives; compounds comprising said specific substituted 1,2,4-triazole derivatives, 1,2,4-oxadiazole derivatives or 1,2,4-thiadiazole derivatives a light emitting layer; specific specific substituted 1,2,4-triazole derivatives, 1,2,4-oxadiazole derivatives and 1,2,4-thiadiazole derivatives; and comprising said specific 1 , an organic light-emitting device of 2,4-azole derivatives and a light-emitting layer comprising the specific 1,2,4-azole derivatives; the specific substituted 1,2,4-triazole derivatives, 1,2 , the use of 4-oxadiazole derivatives and 1,2,4-thiadiazole derivatives for electrophotographic photoreceptors, photoelectric converters, sensors, dye lasers, solar cell devices and organic light-emitting elements, and the specific ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C07D413/14H01L51/54H10K99/00
CPCC07D413/14C09K11/06C09K2211/1033H10K85/656H10K85/6565H10K85/654H10K85/657H10K85/40H10K85/6572C07D249/08C07D271/06C09K2211/1011C09K2211/1029C09K2211/1037C09K2211/104C09K2211/1044C09K2211/1051C09K2211/1059C07D401/14C07D401/10C07D403/10C07D403/14C07D413/04C07D413/10C07D417/14C07D487/04C07F7/0816Y02E10/549C09K2211/1096C09K11/025H10K50/11H10K2101/30C09K2211/1018
Inventor 田边润一克里斯蒂安·伦纳茨
Owner UDC IRELAND
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