Title:
THERMALLY ACTIVATED DELAYED FLUORESCENCE COMPOUND, LIGHT EMITTING MATERIAL AND OLED DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/151543
Kind Code:
A1
Abstract:
Disclosed are a thermally activated delayed fluorescence compound, a light emitting material and an OLED device. The thermally activated delayed fluorescence compound in the present disclosure is represented by the following general formula (1): wherein x represents an integer of 0-4, each of y and z independently represents an integer of 0-6, and x+y+z=6; and A represents an electron withdrawing group, and each of D1 and D2 independently represents an electron-donating group or hydrogen atom. In the present disclosure, the electron withdrawing group A, the electron-donating groups D1 and D2, and the position of substitution thereof, as well as the values of x, y and z are appropriately selected to construct an organic compound, such that the compound has an energy level difference between a triplet state and a singlet state of less than 0.3 eV, thus has increased electroluminescence quantum efficiency and an extended life. The material in the present disclosure has a low cost and can be synthesized in a relatively simple process, suggesting ample potential and scope of application thereof.
Inventors:
CUI LINSONG (CN)
ZHANG YEXIN (CN)
LIN JIUDONG (CN)
CHEN HUA (CN)
ZHANG YEXIN (CN)
LIN JIUDONG (CN)
CHEN HUA (CN)
Application Number:
PCT/CN2020/072185
Publication Date:
July 30, 2020
Filing Date:
January 15, 2020
Export Citation:
Assignee:
SUZHOU JOYSUN ADVANCED MAT CO LTD (CN)
International Classes:
C07D209/86; C07D519/00; C07D209/94; C07D403/14; C07D409/14; C07D487/04; C07D491/048; C07D495/04; C09K11/06; H01L51/50; H01L51/54
Domestic Patent References:
| WO2018237389A1 | 2018-12-27 | |||
| WO2018155642A1 | 2018-08-30 |
Foreign References:
| CN110759851A | 2020-02-07 | |||
| CN109651406A | 2019-04-19 | |||
| KR20190018397A | 2019-02-22 | |||
| US20190181353A1 | 2019-06-13 | |||
| CN109836426A | 2019-06-04 | |||
| CN104693185A | 2015-06-10 | |||
| CN108695440A | 2018-10-23 | |||
| US20150129849A1 | 2015-05-14 | |||
| CN108264478A | 2018-07-10 | |||
| EP3275969A1 | 2018-01-31 | |||
| CN107531628A | 2018-01-02 | |||
| US20180086763A1 | 2018-03-29 |
Other References:
ELISABETH SPECKMEIER,TILLMANN G. FISCHER,KIRSTEN ZEITLER: "Journal of the American Chemical Society", A TOOLBOX APPROACH TO CONSTRUCT BROADLY APPLICABLE METAL-FREE CATALYSTS FOR PHOTOREDOX CHEMISTRY: DELIBERATE TUNING OF REDOX POTENTIALS AND IMPORTANCE OF HALOGENS IN DONOR−ACCEPTOR CYANOARENES, vol. 140, no. 45, 2 October 2018 (2018-10-02), pages 15353 - 15365, XP055723712, ISSN: 0002-7863, DOI: 10.1021/jacs.8b08933
FANGFANG WANG, CAO XUDONG, MEI LING, ZHANG XINWEN, HU JIA, TAO YOUTIAN: "Chinese Journal of Chemistry", TWISTED PENTA-CARBAZOLE/BENZOPHENONE HYBRID COMPOUND AS MULTIFUNCTIONAL ORGANIC HOST, DOPANT OR NON-DOPED EMITTER FOR HIGHLY EFFICIENT SOLUTION-PROCESSED DELAYED FLUORESCENCE OLEDS, vol. 36, no. 3, 10 January 2018 (2018-01-10), pages 241 - 246, XP055723716, ISSN: 1001-604X, DOI: 10.1002/cjoc.201700703
FANGFANG WANG, CAO XUDONG, MEI LING, ZHANG XINWEN, HU JIA, TAO YOUTIAN: "Chinese Journal of Chemistry", TWISTED PENTA-CARBAZOLE/BENZOPHENONE HYBRID COMPOUND AS MULTIFUNCTIONAL ORGANIC HOST, DOPANT OR NON-DOPED EMITTER FOR HIGHLY EFFICIENT SOLUTION-PROCESSED DELAYED FLUORESCENCE OLEDS, vol. 36, no. 3, 10 January 2018 (2018-01-10), pages 241 - 246, XP055723716, ISSN: 1001-604X, DOI: 10.1002/cjoc.201700703
Attorney, Agent or Firm:
LINDA LIU & PARTNERS (CN)
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