摘要
本文通过多步有机反应制备了化合物9-苯基-9′-(4-二苯基氧化膦)苯基-氧杂蒽[diphenyl(4-(9-phenyl-9H-xanthen-9-yl)phenyl)phosphine oxide,DPPO],低温磷光发射光谱测试表明该化合物具有高的三线态能级(2.88eV),它可以作为天蓝色磷光发光材料双(4,6-二氟苯基吡啶-N,C2)吡啶甲酰合铱[bis(3,5-difluoro-2-(2-pyridyl)phenyl-(2-carboxypyridyl)iridium(Ⅲ),FIrpic,ET=2.62eV]的主体材料.将主体材料DPPO用于蓝色磷光有机发光二极管中,该器件在100cd/m2的亮度下,电流效率和流明效率分别达到30.6cd/A和19.2lm/W,最大外量子效率达到13.6%.
A novel host material diphenyl(4-(9-phenyl-9H-xanthen-9-yl)phenyl)phosphine oxide (DPPO) was synthesized and characterized. The phosphorescent spectrum shows that this new compound possesses high triplet energy level and can be used as host material for the sky-blue emitter bis(4,6-difluorophenylpyridine)(picolinate) iridium (III) (Flrpic) in phosphorescent OLED. Consequently, the device performance based on DPPO as host material exhibits a current efficiency of 30.6 cd/A, a luminance efficiency of 19.2 lm/W and a maximum external quantum efficiency of 13.6% at the luminance of 100 cd/m^2.
出处
《中国科学:化学》
CAS
CSCD
北大核心
2013年第4期465-471,共7页
SCIENTIA SINICA Chimica
基金
国家自然科学基金(21202114
61036009
61177016
21161160446)
江苏省自然科学基金(BK2010003)的资助