A Novel Linking Strategy of Using 9,10‐Dihydroacridine to Construct Efficient Host Materials for Red Phosphorescent Organic Light‐Emitting Diodes
作者:Xiang‐Yang Liu、Yu‐Yang Ma、Wenjuan Zhang、Bo Song、Lei Ding、Man‐Keung Fung、Jian Fan
DOI:10.1002/chem.201802030
日期:2018.8.9
photophysical, electrochemical, and electroluminescent properties of these host materials were studied systematically. Consequently, (acetylacetonato)bis(2‐methyldibenzo[f,h]quinoxaline)iridium(III) [Ir(MDQ)2(acac)]‐based red phosphorescent organic light‐emitting diodes (PHOLEDs) were fabricated with these three host materials. As a result, the device hosted by MeAcPhCN showed good device performance with
三种新颖的9,10-二氢ac啶衍生物4'-(10-甲基-9,9-二苯基-9,10-二氢ac啶-4-基)[1,1'-联苯] -4-腈(MeAcPhCN),4 ′-(9,9,10-三苯基-9,10-二氢ac啶-4-基)[1,1'-联苯] -4-腈(PhAcPhCN)和5- [4-(9,9,10-三苯基-9,10-二氢ac啶-4-基)苯基]吡啶啉(MeAcPyCN)是通过将[1,1'-联苯] -4-腈或5-苯基吡啶啉连接到9,10的4位制备的-二氢ac啶 这种特殊的连接策略限制了共轭长度,保持了三重态能量,并抑制了这些化合物的分子间电荷转移(ICT)特性。值得注意的是,相对于苯甲腈,吡啶甲腈链段的接受强度增强导致MeAcPyCN具有相对较强的ICT特性,较低的能隙和较低的三重态能量。散热 系统地研究了这些主体材料的光物理,电化学和电致发光特性。因此,(乙酰丙酮基)双(2-甲基二苯并[使用这三种主体材料制造了基于f,h