基于荧光淬灭传感技术检测三硝基甲苯的研究  

Detection of trinitrotoluene based on fluorescence quenching sensor technology

作　　者：章美娟 方慧雯 卫玉娇 杨锦宏 汪卫华 贺胜男 ZHANG Meijuan;FANG Huiwen;WEI Yujiao;YANG Jinhong;WANG Weihua;HE Shengnan(Institute of Material Science and Information Technology,Anhui University,Hefei 230601,China)

机构地区：[1]安徽大学物质科学与信息技术研究院,安徽合肥230601

出　　处：《量子电子学报》2024年第1期37-46,共10页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金(11904007)。

摘　　要：目前针对常见爆炸物三硝基甲苯(TNT)的检测越来越受到重视。本研究采用低成本的芴基发绿光共轭聚合物(FGEP)研制荧光淬灭传感器用于检测TNT。实验研究了FGEP在不同溶液浓度下形成的不同厚度薄膜对TNT淬灭的效率,实验结果表明浓度为0.5 mg/mL (厚度为19.50 nm)的样品薄膜在TNT蒸气中淬灭效率最大达到71.71%,基于此淬灭效率最高的样品薄膜的研究发现:该薄膜对TNT的响应具有良好的可逆性;激发光强度为16.5mW时,荧光淬灭效率最佳;最后开展了样品在TNT作用下与光漂白作用下的实验研究。研究结果为后续实现一种低成本、易于制备、可重复性高且有利于工程化的爆炸物传感器提供了一定基础。At present,more and more attention has been paid to the detection of common explosives trinitrotoluene(TNT).In this study,a low-cost fluorene-based green-emitting conjugated polymer(FGEP)is used to develop a fluorescence quenching sensor for the detection of TNT.The quenching efficiency of TNT by different thickness FGEP films at different solution concentrations is studied experimentally.The experimental results show that the quenching efficiency of the sample film with a concentration of 0.5 mg/mL(thickness of 19.50 nm)in TNT vapor reaches the maximum of 71.71%.Based on the study of the sample film with the highest quenching efficiency,it is found that the film has good reversibility to TNT,and when the excitation light intensity is 16.5 mW,the fluorescence quenching efficiency is the best.Finally,the experimental study of the samples under the action of TNT and photobleaching is carried out.The research results provide a basis for the subsequent realization of a low-cost,easy-to-prepare,highly repeatable and engineering-friendly explosive sensor.

关 键 词：光谱学 爆炸物检测 荧光淬灭 泵浦能量 有机半导体聚合物 硝基化合物 

分 类 号：TN247[电子电信—物理电子学]