Detection of 2,4-dinitrotoluene using hydrogen-bond acidic polymer coated SAW sensor

作     者：Yang Wang Xiaosong Du Yin Long Huiling Tai Yadong Jiang 

作者机构：State Key Laboratory of Electronic Thin Films and Integrated DevicesSchool of Optoelectronic InformationUniversity of Electronic Science and Technology of China 

出 版 物：《Chinese Science Bulletin》 (科学通报(英文版))

年 卷 期：2014年第59卷第21期

页      面：2608-2612页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 080202[工学-机械电子工程] 070302[理学-分析化学] 0703[理学-化学] 0802[工学-机械工程] 

基　　金：supported by the National High Technology Research & Development Program of China (2014AA063010) the Specialized Research Fund for the Doctoral Program of Higher Education (20130185110017) the National Natural Science Foundation of China (61176066 and 61101031) 

主　　题：传感器检测 氢键相互作用 酸性聚合物 SAW器件 二硝基甲苯 FT-IR光谱 涂覆 核磁共振氢谱 

摘      要：A strong hydrogen-bond acidic(HBA)polymer linear fluoroalcoholic polysiloxane(PLF),synthesized by one-step hydrosilylation,was introduced for 2,4-dinitrotoluene(2,4-DNT)detection using surface acoustic wave(SAW)***-IR spectra and1H NMR spectra characterizations confirmed its molecular ***,PLF was dissolved in chloroform,and spray coated onto a434 MHz SAW *** subsequently,the sensitivity and selectivity of the fabricated sensor were studied based on a SAW test *** 2,4-DNT of 1 ppm and 100 ppb(for DNT,1 ppm=8.1 mg/m3;1 ppb=8.1 lg/m3),the responses of the sensor rose 7.7 and 1.5 kHz,***,compared with some common interference vapors at 10 mg/m3,the response of the sensor to 2,4-DNT at1 ppm was 5 times *** sensitive property was attributed to the hydrogen bond interaction between the hexafluoroisopropanol(HFIP)group in PLF and the basic lone electron pairs of nitro-groups in 2,*** between the PLF sensor and hydroxyl group functionalized polymer(carbowax and MOBCD)-coated sensors was investigated,and the results showed that the PLF sensor exhibited better *** a word,the PLF sensor exhibited fast response,negligible baseline drifts and excellent reversibility,indicating good candidates of HFIP group functionalized HBA polymers for practical nitroaromatic explosives detection.