Regioisomerism effect(RIE) on optimizing ultralong organic phosphorescence lifetimes  

作　　者：Yanni Zhang Jianfeng Zhao Caixia Zhu Lifang Bian Huifang Shi Shiming Zhang Huili Ma Wei Huang 

机构地区：[1]Key Laboratory of Flexible Electronics (KLOFE) Institute of Advanced Materials (IAM),Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM),Nanjing Tech University (NanjingTech)

出　　处：《Chinese Chemical Letters》2019年第11期1974-1978,共5页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.21975126,51673095,21875104,21875191,21603104);the Natural Science Foundation of Jiangsu Province(Nos.BK20171470,BK20160991,BK20150064,BK20130912);973 Program(No.2015CB932200);Ministry of Education and Synergetic Innovation Center for Organic Electronics and Information Displays for financial support

摘　　要：Organic phosphorescence materials demonstrate potential optoelectronic applications due to their remarkably ultralong organic phosphorescence(UOP)lifetime and abundant optical characteristics prior to the fluorescence materials.For a better insight into the intrinsic relationship among regioisomeric molecules,crystalline interactions,and phosphorescence properties,three crystalline dicarbazol-9-yl pyrazine-based regioisomers with para-,meta-and ortho-convergent substitutions(p-DCzP,m-DCzP,and o-DCzP)were designed and presented gradually increased UOP lifetimes prolonging from 63.14,127.93 to 350.46 ms,respectively,due to the regioisomerism effect(RIE)which would be an effective strategy for better understanding of structure-property of UOP materials.Organic phosphorescence materials demonstrate potential optoelectronic applications due to their remarkably ultralong organic phosphorescence(UOP) lifetime and abundant optical characteristics prior to the fluorescence materials.For a better insight into the intrinsic relationship among regioisomeric molecules,crystalline interactions,and phosphorescence properties,three crystalline dicarbazol-9-yl pyrazine-based regioisomers with para-,meta-and ortho-convergent substitutions(p-DCzP,m-DCzP,and o-DCzP) were designed and presented gradually increased UOP lifetimes prolonging from 63.14,127.93 to350.46 ms,respectively,due to the regioisomerism effect(RIE) which would be an effective strategy for better understanding of structure-property of UOP materials.

关 键 词：Regioisomerism effect(RIE) Ultralong organic phosphorescence(UOP) Crystal engineering H-AGGREGATION 

分 类 号：TQ2[化学工程—有机化工]