Synthesis of diimidazolylstilbenes as n-type blue fluorophores: alternative dopant materials for highly efficient electroluminescent devices.
Two new n-type diimidazolylstilbenes as blue-fluorescent dopant materials are synthesized and characterized. Blue-fluorescent devices based on these two compounds as the dopants reveal outstanding external quantum efficiencies (EQEs) (current efficiencies) of 7.8% (10.4 cd A(-1) ) and 7.7% (7.9 cd A(-1) ) with Commission internationale de l'Eclairage (CIE) co-ordinates of (0.14, 0.15) and (0.15, 0.11).
Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan.
Ho-Hsiu
HH
Chou
Yi-Hsiang
YH
Chen
He-Pei
HP
Hsu
Wen-Hsin
WH
Chang
Yu-Han
YH
Chen
Chien-Hong
CH
Cheng
D005456:Fluorescent Dyes / Q000737:chemistry; D007093:Imidazoles / Q000737:chemistry; D008163:Luminescent Measurements / Q000295:instrumentation*; D011789:Quantum Theory; D013267:Stilbenes / Q000138:chemical synthesis / Q000737:chemistry*
D005456:Fluorescent Dyes; D007093:Imidazoles; D013267:Stilbenes; C029899:imidazole