Journal of Materials Chemistry C p. 1452 - 1462 (2017)
Update date:2022-08-29
Topics:
Shiu, Yi-Jiun
Chen, Yi-Ting
Lee, Wei-Kai
Wu, Chung-Chih
Lin, Tzu-Chieh
Liu, Shih-Hung
Chou, Pi-Tai
Lu, Chin-Wei
Cheng, I-Chen
Lien, Yi-Jyun
Chi, Yun
A new series of functional phenylpyridinato boron complexes possessing thermally activated delayed fluorescence (TADF) has been strategically designed and synthesized. These boron complexes utilize phenylpyridine as the electron acceptor (A) that links to carbazole or triphenyl amine as the electron donor (D) via a core boron atom, forming four-coordinate neutral boron complexes. The selection of boron to spatially separate the donor and acceptor takes advantage of facile functionalization. The TADF properties of the resulting D-A functional materials in various solvents have been investigated via their emission spectra and associated relaxation dynamics. The results show that the operation of TADF is strongly solvent polarity dependent in fluid states, and several underlying mechanisms are discussed. OLEDs fabricated by fppyBTPA and dfppyBTPA show EL efficiencies of up to (20.2%, 63.9 cd A?1, 66.9 lm W?1) and (26.6%, 88.2 cd A?1, 81.5 lm W?1), respectively, in which a nearly 27% EQE for the dfppyBTPA device is among the most efficient TADF OLEDs so far.
View MoreSuzhou Sibian Chemical Technology Co., Ltd
website:http://www.sibianpharm.com
Contact:+8618169181984,+8618013186906
Address:Room1404,BuildingA,Jiabao Square No.323 Baodai East Road,Wuzhong District,Suzhou Jiangsu China (215128)
Xi'an Unique Electronic and Chemical Co., Ltd.
Contact:+86-029-88238008
Address:1703# B BUILDING WEST ELECTRONIC ZONE, XI'AN, CHINA
Changzhou Ansciep Chemical Co.,Ltd.
Contact:+86 519 8630 5871
Address:A-710 Boan International, 8 East Guangdian Road,Wujin,Changzhou
Chongqing Changfeng Chemical Co., Ltd.
website:http://www.changfengchem.com
Contact:+86-23-67896333
Address:30th Floor, Longhu Ziduxingzuo Building A, 1st Branch,YuSong Rd., Yubei District, Chongqing, China
Contact:+86-21-38122007
Address:2, Lane 1123, Kangqiao Road, Pudong New Area, Shanghai
Doi:10.1002/pssa.200521208
(2006)Doi:10.1021/jp504406j
(2014)Doi:10.1246/bcsj.61.4379
(1988)Doi:10.1002/ejic.200900034
(2009)Doi:10.1039/a904049h
(1999)Doi:10.1007/s11224-009-9575-0
(2010)