Dynamic response and discrimination of gaseous sarin using a boron-difluoride complex film-based fluorescence sensor  

作　　者：Zhijie Zhou Lei Zhang Lingya Peng Yingjie Li Xiaolin Zhu Yidi Wu Zebiao Qiu Gang He Molin Qin Haonan Peng Yu Fang 

机构地区：[1]Key Laboratory of Applied Surface and Colloid Chemistry(Ministry of Education),School of Chemistry and Chemical Engineering,Shaanxi Normal University,Xi’an,Shaanxi,P.R.China [2]School of Optoelectronic Engineering,Xidian University,Xi’an,Shaanxi,P.R.China [3]Frontier Institute of Science and Technology,State Key Laboratory for Strength and Vibration of Mechanical Structures,Xi’an Jiaotong University,Xi’an,Shaanxi,P.R.China [4]State Key Laboratory of NBC Protection for Civilian,Beijing,P.R.China

出　　处：《Aggregate》2024年第6期311-319,共9页聚集体(英文)

基　　金：National Key Research and Development Program of China,Grant/Award Number:2022YFA12055001;National Natural Science Foundation of China,Grant/Award Numbers:22202128,21972084,21820102005;Scientific Research Plan of Shaanxi Province of China,Grant/Award Number:2021TD-18;Innovative Research Team in University,Grant/Award Number:IRT-14R33;Program of Introducing Talents of Discipline to Universities,Grant/Award Number:B14041;Shaanxi Fundamental Science Research Project for Chemistry and Biology,Grant/Award Number:23JHQ074;Fundamental Research Funds for the Central Universities,Grant/Award Numbers:GK202003040,GK202205016。

摘　　要：This study presents a novel boron-difluoride complex-based fluorescent nanofilm sensor capable of detecting sarin vapors in the environment by reporting an output fluorescence signal.The sensor’s evaluation demonstrated an exceptionally low detection limit for sarin vapor,even in the presence of various interfering gases,with theoretical and practical limits of detection of 0.7 and 1 ppb,respectively.The sensor featured a rapid response time(less than 2 s),a broad linear detection range(1 ppb–1000 ppm),and superior selectivity for sarin vapor over a group of interfering analytes,outperforming existing sarin sensors.Mechanistic study indicates that the sensor’s heightened sensitivity to sarin vapor is due to the robust affinity of nitrogen atoms within the core BODIQ unit for sarin.Additionally,the tetraphenylethylene structure with steric hindrance effectively inhibits the tight packing of BODIQ derivatives,and forms numerous microporous structures in the self-assembled nanofilm,which are beneficial for the mass transfer,enhancing the sensor efficiency in detecting vapors.Furthermore,we have achieved the differentiation of sarin,diethyl chlorophosphate,and HCl vapor through the analysis of sensing kinetic.This fluorescent sensor opens new avenues for sustainable,low-cost,and environment-friendly portable devices,as well as for environmental monitoring and tracking applications.

关 键 词：boron-difluoride complex fluorescent film sensors(FFSs) SARIN tetraphenylethylene(TPE) 

分 类 号：TP2[自动化与计算机技术—检测技术与自动化装置]