Title:
THERMALLY ACTIVATED DELAYED FLUORESCENT MOLECULAR MATERIAL AND SYNTHESIS METHOD THEREFOR, AND ELECTROLUMINESCENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/017274
Kind Code:
A1
Abstract:
The present invention provides a thermally activated delayed fluorescent molecular material and a synthesis method therefor, and an organic electroluminescent device. Boron-nitrogen containing thermally activated delayed fluorescent molecules are synthesized. Such molecules have an intramolecular multiple resonance effect, and can well narrow the luminescence spectrum. Such molecules have a super-large plane and exhibit great rigidity, so that the molecules have high intersystem crossing rate constant and reverse intersystem crossing rate constant, thereby effectively inhibiting the reduction of radiation transition rate caused by the energy gap law, and obtaining high PLQY.
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Inventors:
WANG YANJIE (CN)
Application Number:
PCT/CN2019/117023
Publication Date:
February 04, 2021
Filing Date:
November 11, 2019
Export Citation:
Assignee:
WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECH CO LTD (CN)
International Classes:
C07F5/02; C09K11/06; H01L51/50
Domestic Patent References:
| WO2019052939A1 | 2019-03-21 | |||
| WO2019164340A1 | 2019-08-29 |
Foreign References:
| CN109192874A | 2019-01-11 | |||
| CN107266484A | 2017-10-20 | |||
| CN109411634A | 2019-03-01 |
Attorney, Agent or Firm:
PURPLEVINE INTELLECTUAL PROPERTY(SHENZHEN)CO.,LTD. (CN)
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