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A Simple Phosphine–Oxide Host with a Multi‐insulating Structure: High Triplet Energy Level for Efficient Blue Electrophosphorescence
Author(s) -
Han Chunmiao,
Zhao Yongbiao,
Xu Hui,
Chen Jiangshan,
Deng Zhaopeng,
Ma Dongge,
Li Qiang,
Yan Pengfei
Publication year - 2011
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201100254
Subject(s) - phosphine oxide , simple (philosophy) , host (biology) , optoelectronics , materials science , energy (signal processing) , phosphine , chemistry , physics , biology , organic chemistry , ecology , quantum mechanics , catalysis , philosophy , epistemology
The perfect host? A simple phosphine–oxide host, bis{2‐[di(phenyl)phosphino]phenyl}ether oxide (DPEPO) with a high triplet energy level (2.995 eV), was chosen to prove an effective strategy for multi‐insulating linkage of highly efficient hosts of blue electrophosphorescence. The structure, photophysical properties, molecular orbitals, and device performance were investigated (see graphic; FMO=frontier molecular orbital).