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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%.
In this paper, the compound 9-phenyl-9’- (4-diphenylphosphine oxide) phenyl-xanthen- phenyl) phosphine oxide, DPPO]. The low-temperature phosphorescence emission spectroscopy showed that the compound has a high triplet energy level (2.88eV), which can be used as a blue phosphorescent material bis (4,6-difluorophenylpyridine- C2) host material of bis (3,5-difluoro-2- (2-pyridyl) phenyl- (2-carboxypyridyl) iridium (III), FIrpic, ET = 2.62 eV] For blue phosphorescent organic light-emitting diodes, the device achieves a current efficiency and a lumen efficiency of 30.6 cd / A and 19.2 lm / W at a luminance of 100 cd / m2 and a maximum external quantum efficiency of 13.6%.