title: Synthesis and photo- and electroluminescence properties of 3,6-disubstituted phenanthrenes: alternative host material for blue fluorophores.
abstract: Three deep-blue fluorescent 9,10-bis(4-tert-butylphenyl)phenanthrenes with diphenyl, -naphthyl, and -pyrenyl moieties at C3 and C6 positions were synthesized and used as the host for doped blue fluorescent devices; one of these devices reveals excellent external quantum efficiency of 7.7% and current efficiency of 9.8 cd A(-1) with low efficiency roll-off, deep-blue color coordinates (0.14, 0.14) and long operational lifetime.
authors: Department of Chemistry, National Tsing-Hua University, Hsinchu 30013, Taiwan.
authors: Yu-Han
authors: YH
authors: Chen
authors: Ho-Hsiu
authors: HH
authors: Chou
authors: Tsu-Hui
authors: TH
authors: Su
authors: Pei-Yu
authors: PY
authors: Chou
authors: Fang-Iy
authors: FI
authors: Wu
authors: Chien-Hong
authors: CH
authors: Cheng