Bent ladder-type hexaphenylene with carbazole core and spiro linkage as stable and efficient blue emitter.
A bent ladder-type hexaphenylene with a carbazole core and spiro-linkage is designed and synthesized by using the ortho-linked spirobifluorene. The design eliminates the possibility of forming a positional isomer. As a blue-emitter, the BLHPC shows good thermal and color stability. A simple light-emitting device fabricated from BLHPC exhibits a maximum current efficiency of 1.46 cd/A and a maximum luminance of 505 cd/m(2).
Jiang
Zuoquan
Z
Department of Chemistry, Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, Wuhan University, Wuhan 430072, PR China.
Yao
Haiqing
H
Liu
Zhongyin
Z
Yang
Chuluo
C
Zhong
Cheng
C
Qin
Jingui
J
Yu
Gui
G
Liu
Yunqi
Y