Fine-tuning redox ability of arylene-bridged bis(benzimidazolium)for electrochromism and visible-light photocatalysis  

作　　者：Jing Wang Zenghui Li Xiaoyang Liu Bochao Su Honghong Gong Chao Feng Guoping Li Gang He Bin Rao 

机构地区：[1]School of Chemistry,Engineering Research Center of Energy Storage Materials and Devices,Ministry of Education,Xi’an Key Laboratory of Sustainable Energy Materials Chemistry,Xi’an Jiaotong University,Xi’an 710054,China [2]Frontier Institute of Science and Technology,Xi’an Jiaotong University,Xi’an 710054,China [3]Instrumental Analysis Center,Xi’an Jiaotong University,Xi’an 710049,China

出　　处：《Chinese Chemical Letters》2024年第9期140-144,共5页中国化学快报（英文版）

基　　金：supported by Natural Science Foundation of China(Nos.22001200,22175138,21875180)。

摘　　要：In this study,a series of arylene-bridged bis(benzimidazolium)triflates 1^(–)6^(^(2+))·2[OTf^(–)]were synthesized by grafting differentπ-linkers with benzimidazolium scaffolds.Among them,compound 1^(2+)·2[OTf^(–)]with anthracene as the linker exhibited remarkable electron transfer capabilities across four distinct redox states.The inclusion of an anthracene unit as theπ-linker contributes to its exceptional redox and optoelectronic characteristics.Consequently,1^(2+)·2[OTf^(–)]was successfully utilized as both an electrochromic molecule in an ECD under applied voltage for the first time,and a highly efficient photocatalyst for the formation of carbon–phosphorus bonds via visible-light-induced cross-dehydrogenative coupling reactions.

关 键 词：N-Heterocyclic carbenes(NHCs) Ionic radicals ELECTROCHROMISM PHOTOCATALYSIS 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学]