Title:
THERMALLY ACTIVATED DELAYED FLUORESCENCE MATERIAL, PREPARATION METHOD THEREFOR, AND ORGANIC ELECTROLUMINESCENT DIODE DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/211121
Kind Code:
A1
Abstract:
The present invention relates to a thermally activated delayed fluorescence material, a preparation method therefor, and an organic electroluminescent diode device, the structural general formula of the thermally activated delayed fluorescence material being shown in the following formula: (I), wherein R1represents a chemical group acting as an electron donor and R2 represents a chemical group acting as an electron acceptor. The thermally activated delayed fluorescence material of the present invention is a blue-light TADF material with significant TADF characteristics and has an ultra-fast reverse inter-system crossing rate and high light emission efficiency and, when used as a light emitting layer guest material in an organic electroluminescent device, can effectively improve the light emission efficiency of the organic electroluminescent device; an organic electroluminescent device based on the thermally activated delayed fluorescence material of the present invention has extremely high device efficiency.
Inventors:
LUO JIAJIA (CN)
YAN SHUXING (CN)
YAN SHUXING (CN)
Application Number:
PCT/CN2019/085611
Publication Date:
October 22, 2020
Filing Date:
May 06, 2019
Export Citation:
Assignee:
WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECH CO LTD (CN)
International Classes:
C09K11/06; C07D219/02; C07D265/38; C07D279/22
Foreign References:
| CN108530376A | 2018-09-14 | |||
| KR20160080420A | 2016-07-08 |
Other References:
IRYNA HLADKA; VOLYNIUK DMYTRO; BEZVIKONNYI OLEKSANDR; KINZHYBALO VASYL; BEDNARCHUK TAMARA J; DANYLIV YAN; LYTVYN ROMAN; LAZAUSKAS : "Polymorphism of Derivatives of Tert-Butyl Substituted Acridan and Perfluorobiphenyl as Sky-Blue OLED Emitters Exhibiting Aggregation Induced Thermally Activated Delayed Fluorescence", JOURNAL OF MATERIALS CHEMISTRY C, vol. 6, no. 48, 25 October 2018 (2018-10-25), pages 13179 - 13189, XP055708797, DOI: 10.1039/C8TC04867C
Attorney, Agent or Firm:
COMIPS INTELLECTUAL PROPERTY OFFICE (CN)
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