摘要
采用4-甲基-2,5-二苯基吡啶(MDP)、5-甲基-2-苯基吡啶(PMP)作为配体,设计合成了2种新的绿色磷光铱(Ⅲ)配合物Ir(MDP)_2(PMP)(1)和Ir(MDP)(PMP)_2(2).系统测试了2种配合物的光物理和电化学等性质,并通过单晶结构和理论计算讨论了材料的分子结构、堆积结构对光电性能的影响.利用配合物1和2制备的绿色磷光器件实现了高性能的电致发光,最大外量子效率(EQE)分别为22.4%和20.7%,功率效率(PE)分别为86.0和77.5 lm/W,且滚降较小.
Two novel mixed 4-methyl-2,5-diphenylpyridine(MDP)/5-methyl-2-phenylpyridine(PMP)tris-cyclometalated iridium complexes Ir(MDP)2(PMP)(complex 1)and Ir(MDP)(PMP)2(complex 2)have been synthesized and characterized systematically in terms of their photophysical and electrochemical properties,and the effect of the molecular and the stacking structure on the photoelectric performance was investigated through the single crystal structure and theoretical calculation.The phosphorescent organic light-emitting diodes(PhOLEDs)based on both new phosphors showed the rather high maximum external quantum efficiency(EQE)of 22.4%and 20.7%,and maximum power efficiency(PE)values of 86.0 and 77.5 lm/W respectively,with the low efficiency roll-off.
作者
马晓宇
梁洁
叶玲
范勇
徐家宁
叶开其
MA Xiaoyu;LIANG Jie;YE Ling;FAN Yong;XU Jianing;YE Kaiqi(State Key Laboratory of Supramolecular Structure and Materials,College of Chemistry,Jilin University,Changchun 130012,China)
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2018年第10期2129-2135,共7页
Chemical Journal of Chinese Universities
基金
国家重点研究发展计划项目(批准号:2017YFB0404400)资助.
