Modulating the Optoelectronic Properties of Large, Conjugated, High-Energy Gap, Quaternary Phosphine Oxide Hosts: Impact of the Triplet-Excited-State Location
作者:Zhen Zhang、Zhensong Zhang、Runfeng Chen、Jilin Jia、Chunmiao Han、Chao Zheng、Hui Xu、Donghui Yu、Yi Zhao、Pengfei Yan、Shiyong Liu、Wei Huang
DOI:10.1002/chem.201300466
日期:2013.7.15
The purposeful modulation of the optoelectronic properties was realised on the basis of a series of the large, conjugated, phosphine oxide hosts 9,9‐bis‐4′‐[2‐(diphenylphosphinoyl)phenoxy]biphenyl‐4‐yl}‐9H‐fluorene (DDPESPOF), 9,9‐bis‐3′‐(diphenylphosphinoyl)‐4′‐[2‐(diphenylphosphinoyl)phenoxy]biphenyl‐4‐yl}‐9H‐fluorene (DDPEPOF), 9‐[4′‐(9‐4′‐[2‐(diphenylphosphoryl)phenoxy]biphenyl‐4‐yl}‐9H‐flu
在一系列大型共轭氧化膦主体9,9-双-4'-[2-(二苯基膦酰基)苯氧基]联苯-4-基} -9的基础上实现了有目的的光电子性能调制H-芴(DDPESPOF),9,9-双-3'-(二苯基膦酰基)-4'-[2-(二苯基膦酰基)苯氧基]联苯-4-基} -9 H-芴(DDPEPOF),9- [ 4' - (9- 4' - [2-(二苯基磷酰基)苯氧基]联苯-4-基} -9- ħ芴-9-基)联苯-4-基] -9- ħ咔唑(DPESPOFPhCz)和9 -[4'-(9- 3'-(二苯基磷酰基)-4'-[2-(二苯基磷酰基)苯氧基]联苯-4-基} -9 H-芴-9-9基)联苯基-4-基]- 9小时咔唑(DPEPOFPhCz)。最后两个是季基,其中芴基为连接桥,二苯膦氧化物(DPPO)部分为电子受体,二苯醚和咔唑为两种不同类型的电子供体。由于具有良好的组织结构和间接的,多重绝缘的混合连接,所有这些主体都达到了相同的第一个三重态能级(T