Title:
THERMALLY ACTIVATED DELAYED FLUORESCENT MATERIAL AND PREPARATION METHOD THEREFOR, AND ORGANIC LIGHT EMITTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/191866
Kind Code:
A1
Abstract:
A thermally activated delayed fluorescent material having a chemical structural formula (A), the R group being a diphenylamine group. An efficient deep blue thermally activated delayed fluorescent material is produced by using tetrastyrene as the nucleus and connecting carbazole, phenoxazine, and other groups, so that the external quantum efficiency of an organic electroluminescence device prepared on the basis of the present material is improved and the efficiency decays slowly, thereby increasing the service life of the organic electroluminescence device.
Inventors:
ZHANG QU (CN)
WU KAILONG (CN)
WU KAILONG (CN)
Application Number:
PCT/CN2019/086115
Publication Date:
October 01, 2020
Filing Date:
May 09, 2019
Export Citation:
Assignee:
WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECH CO LTD (CN)
International Classes:
C09K11/06; C07D219/14; C07D265/38; H01L51/50; H01L51/54
Foreign References:
| CN105481672A | 2016-04-13 | |||
| CN103740359A | 2014-04-23 |
Other References:
YUNPENG QI , YONGTAO WANG , YONGJIANG YU , ZHIYONG LIU , YAN ZHANG , YU QI, CHANGTONG ZHOU: "Exploring highly efficient light conversion agents for agricultural film based on aggregation induced emission effects", JOURNAL OF MATERIALS CHEMISTRY C, vol. 4, 8 November 2016 (2016-11-08), pages 11291 - 11297, XP055738026, ISSN: 2050-7526, DOI: 10.1039/C6TC04215E
Attorney, Agent or Firm:
ESSEN PATENT & TRADEMARK AGENCY (CN)
Download PDF: