具有AIE特性的聚乳酸及其对2,4,6-三硝基苯酚的荧光传感  

Polylactide Polymers with Aggregation-Induced Emission for Sensing 2,4,6-Trinitrophenol

作　　者：岳振新 王世敏[1] 王二静[1] YUE Zhen-xin;WANG Shi-min;WANG Er-jing(Hubei Key Laboratory of Polymer Materials,School of Materials Science and Engineering,Hubei University,Wuhan 430062)

机构地区：[1]高分子材料湖北省重点实验室,湖北大学材料科学与工程学院,武汉430062

出　　处：《胶体与聚合物》2024年第3期107-110,共4页Chinese Journal of Colloid & Polymer

基　　金：国家自然科学基金(52073082)。

摘　　要：本文以具有聚集诱导发光特性的羟基取代的四苯基乙烯为引发剂、丙交酯为单体,通过开环聚合制备了两个含有四苯基乙烯的聚乳酸高分子。该类高分子表现出明显的聚集诱导发光行为,在溶液中发光很弱,而在聚集态或固态条件下强烈发光。由于该类高分子的富电子性质,可以与含有吸电子的爆炸物和爆炸物类似物如三硝基苯酚等发生光致电子转移过程,从而引起荧光淬灭,实现对爆炸物的检测。In this study,two polylactide polymers containing a tetraphenylethylene(TPE)moiety were synthesized through ring-opening polymerization using hydroxy-substituted TPE as the initiator and lactide as the monomer.These polymers exhibit pronounced aggregation-induced emission(AIE)characteristics,showing weak luminescence in solution but intense emission in aggregated or solid states due to restricted intramolecular motion.Owing to the electron-rich nature of these polymers,photo-induced electron transfer occurs when they interact with electron-withdrawing explosives and explosive analogues,such as trinitrophenol(TNP).This process leads to fluorescence quenching,allowing for the detection of these hazardous substances.The AIE behavior of the polymers combined with their capability to undergo photo-induced electron transfer upon encountering electron-deficient molecules makes them promising candidates for sensing applications in the field of explosive detection.

关 键 词：四苯基乙烯 聚集诱导发光 聚乳酸 爆炸物检测 

分 类 号：O633.14[理学—高分子化学]