Fluorescence detection of trace TNT by novel cross-linking electropolymerized films both in vapor and aqueous medium
Fluorescence detection of trace TNT by novel cross-linking electropolymerized films both in vapor and aqueous medium
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新型交联电聚合薄膜在蒸气和水介质中荧光检测痕量 TNT
DOI：
10.1016/j.jhazmat.2013.09.031
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发表时间：
2014-01-15
影响因子：
13.6
通讯作者：
Zhang, Ming
中科院分区：
文献类型：
--
作者：
Nie, Heran;Lv, Ying;Zhang, Ming
将具有高荧光效率的电聚合膜应用于痕量2，4，6-三硝基甲苯（TNT）的检测。本文合成了三种电活性材料TCPC、OCPC和OCz，并研究了它们对TNT的敏感性。其中，TCPC EP膜在水蒸气和水介质中，甚至在天然水中对TNT都表现出最高的灵敏度。研究认为，EP膜的良好性能主要是由以下两个因素造成的：一是EP膜的交联网络能产生有利于TNT渗透的空穴，显著增加EP膜与TNT的接触面积;二是EP膜的前线轨道分布导致了从TCPC到TNT的快速光诱导电子转移（PET）。我们的研究结果表明，这些EP薄膜是有前途的TNT传感候选人，并提供了一种新的方法来制备荧光多孔薄膜。(C)2013爱思唯尔有限公司版权所有。
Electropolymerized (EP) films with high fluorescent efficiency are introduced to the detection of trace 2,4,6-trinitrotoluene (TNT). Three electroactive materials TCPC, OCPC and OCz have been synthesized and their EP films have been demonstrated to be sensitive to TNT. Among them, the TCPC EP films have displayed the highest sensitivity to TNT in both vapor and aqueous medium, even in the natural water. It is proposed that the good performances would be caused by the following two factors: first, the cross-linking network of EP films can generate the cavities which benefit the TNT penetration, and remarkably increase the contact area between the EP films and TNT; second, the frontier orbits distribution leads the fast photo-induced electron transfer (PET) from the TCPC EP films to TNT. Our results prove that these EP films are promising TNT sensing candidates and provide a new method to prepare fluorescent porous films. (C) 2013 Elsevier B.V. All rights reserved.