四苯乙烯和三苯乙烯修饰的8-羟基喹啉聚集诱导发光特性研究  

Study on Aggregation-induced Emission of 8-Hydroxyquinoline Modified by Tetraphenylethylene and Triphenylethylene

作　　者：徐建兴 陈豪登 黄科文 聂飞 陈国威 霍延平[1] 梁亮[1] XU Jian-xing;CHEN Hao-deng;HUANG Ke-wen;NIE Fei;CHEN Guo-wei;HUO Yan-ping;LIANG Liang(School of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou510006,China)

机构地区：[1]广东工业大学轻工化工学院,广东广州510006

出　　处：《分析测试学报》2020年第5期597-603,共7页Journal of Instrumental Analysis

基　　金：国家自然科学基金(61671162,21975055,21975053);广东省科技计划资助项目(2016A010103031)。

摘　　要：将2-甲基-8-羟基喹啉与四苯乙烯或三苯乙烯基团结合,合成了两种新型喹啉衍生物(4-Br-TPE-8HQ及TriPE-8HQ),并对其进行了光物理性能研究。结果发现,连接有四苯乙烯的喹啉衍生物能够体现聚集诱导发光(AIE)特性,而连接三苯乙烯的喹啉衍生物却显示温和的聚集诱导猝灭(ACQ)效应,实现了通过功能基团来调节目标分子聚集诱导效应的目的。研究发现,不同体系下分子的整体平面性有所不同,其中三苯乙烯修饰的衍生物在溶液中的荧光寿命(0.55 ns)高于固体荧光寿命(0.43 ns);循环伏安法证明两者具有良好的电化学稳定性,计算得到的4-Br-TPE-8HQ和TriPE-8HQ的LUMO能级分别为-2.40 eV和-2.43 eV,表明为两个化合物注入电子是可行的。In this paper,two new quinoline derivatives were synthesized by combining 2-methyl-8-hydroxyquinoline with tetrastyrene or tristyrene moieties,and their photophysical properties were studied.It was found that the quinoline derivatives with tetrastyrene attached exhibited a characteristics of aggregation-induced emission(AIE),while the quinoline derivatives with tristyrene attached showed a mild aggregation-induced quenching(ACQ)effect.Therefore,the aggregation-induced effect of the target molecules could be adjusted through the regulation of functional groups.The overall planarities of the molecules in different systems were different,the fluorescence lifetime of tristyrene-modified derivatives in solution is 0.55 ns higher than the solid fluorescence lifetime of 0.43 ns.Cyclic voltammetry(CV)proves that the compounds have excellent electrochemical stability,and the LUMO energy levels of 4-Br-TPE-8HQ and TriPE-8HQ were calculated to be-2.40 eV and-2.43 eV,respectively,indicating that the two compounds can be injected with electrons.

关 键 词：2-甲基-8-羟基喹啉 四苯乙烯 三苯乙烯 聚集诱导发光 晶体结构 

分 类 号：O657.3[理学—分析化学]