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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
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作者单位
徐建兴,陈豪登,黄科文,聂飞,陈国威,霍延平,梁亮 广东工业大学轻工化工学院 
基金项目:国家自然科学基金( 61671162,21975055,21975053);广东省科技计划资助项目(2016A010103031)
中文摘要: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。
中文关键词: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
 
Study on Aggregation induced Emission of 8-Hydroxyquinoline Modified by Tetraphenylethylene and Triphenylethylene
Abstract: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.
Key Words:2-methyl-8-hydroxyquinoline  tetrastyrene  tristyrene  aggregation induced emission  crystal structure
引用本文:徐建兴,陈豪登,黄科文,聂飞,陈国威,霍延平,梁亮.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[J].分析测试学报,2020,39(5):597-603.
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