TY - JOUR
T1 - Twisted Biphenyl-Diimide Derivatives with Aggregation-Induced Emission and Thermally Activated Delayed Fluorescence for High Performance OLEDs
AU - Wang, Zhijun
AU - Zhu, Xiangyu
AU - Zhang, Sikun
AU - Xu, Letian
AU - Zhao, Zujin
AU - He, Gang
N1 - Publisher Copyright:
© 2020 Wiley-VCH GmbH
PY - 2021/3/4
Y1 - 2021/3/4
N2 - π-Conjugated arylene diimide derivatives as a kind of well-known organic dyes have been widely used as building blocks for constructing n-type semiconductors. However, the large π-framework faded their solid-state emission, which hinders their application in organic light-emitting diodes (OLEDs). Herein, two novel π-conjugated donor–acceptor–donor (D-A-D) type compounds BPI-PhPXZ and BPI-PhDMAC, composed of twisted biphenyl-diimide (BPI) acceptors and phenoxazine or acridine donors are synthesized. BPI-PhPXZ and BPI-PhDMAC show prominent aggregation-induced emission (AIE) and thermally activated delayed fluorescence (TADF), and enjoy good thermal and electrochemical stabilities. Doped OLEDs fabricated with the two compounds have achieved high external quantum efficiencies (EQEs) of 18.1% and 16.2%, respectively. The results highlight the beneficial role of well-designed BPI acceptor for the development of efficient D-A-D type TADF emitters with AIE properties.
AB - π-Conjugated arylene diimide derivatives as a kind of well-known organic dyes have been widely used as building blocks for constructing n-type semiconductors. However, the large π-framework faded their solid-state emission, which hinders their application in organic light-emitting diodes (OLEDs). Herein, two novel π-conjugated donor–acceptor–donor (D-A-D) type compounds BPI-PhPXZ and BPI-PhDMAC, composed of twisted biphenyl-diimide (BPI) acceptors and phenoxazine or acridine donors are synthesized. BPI-PhPXZ and BPI-PhDMAC show prominent aggregation-induced emission (AIE) and thermally activated delayed fluorescence (TADF), and enjoy good thermal and electrochemical stabilities. Doped OLEDs fabricated with the two compounds have achieved high external quantum efficiencies (EQEs) of 18.1% and 16.2%, respectively. The results highlight the beneficial role of well-designed BPI acceptor for the development of efficient D-A-D type TADF emitters with AIE properties.
KW - aggregation-induced emission
KW - biphenyl-diimides
KW - organic light-emitting diodes
KW - thermally activated delayed fluorescence
UR - https://www.scopus.com/pages/publications/85097678576
U2 - 10.1002/adom.202001764
DO - 10.1002/adom.202001764
M3 - 文章
AN - SCOPUS:85097678576
SN - 2195-1071
VL - 9
JO - Advanced Optical Materials
JF - Advanced Optical Materials
IS - 5
M1 - 2001764
ER -