title: Concise and Efficient Fluorescent Probe via an Intromolecular Charge Transfer for the Chemical Warfare Agent Mimic Diethylchlorophosphate Vapor Detection.
abstract: Sarin, used as chemical warfare agents (CWAs) for terrorist attacks, can induce a number of virulent effects. Therefore, countermeasures which could realize robust and convenient detection of sarin are in exigent need. A concise charge-transfer colorimetric and fluorescent probe (4-(6-(tert-butyl)pyridine-2-yl)-N,N-diphenylaniline, TBPY-TPA) that could be capable of real-time and on-site monitoring of DCP vapor was reported in this contribution. Upon contact with DCP, the emission band red-shifted from 410 to 522 nm upon exposure to DCP vapor. And the quenching rate of TBPY-TPA reached up to 98% within 25 s. Chemical substances such as acetic acid (HAc), dimethyl methylphosphonate (DMMP), pinacolyl methylphosphonate (PAMP), and triethyl phosphate (TEP) do not interfere with the detection. A detection limit for DCP down to 2.6 ppb level is remarkably achieved which is below the Immediately Dangerous to Life or Health concentration. NMR data suggested that a transformation of the pyridine group into pyridinium salt via a cascade reaction is responsible for the sensing process which induced the dramatic fluorescent red shift. All of these data suggest TBPY-TPA is a promising fluorescent sensor for a rapid, simple, and low-cost method for DCP detection, which could be easy to prepare as a portable chemosensor kit for its practical application in real-time and on-site monitoring.
authors.affiliation: State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology , Chinese Academy of Sciences, Changning Road 865, Shanghai 200050, China.|University of the Chinese Academy of Sciences , Yuquan Road 19, Beijing 100039, China.
authors.forename: Junjun
authors.initials: J
authors.lastname: Yao
authors.affiliation: State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology , Chinese Academy of Sciences, Changning Road 865, Shanghai 200050, China.
authors.forename: Yanyan
authors.initials: Y
authors.lastname: Fu
authors.affiliation: State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology , Chinese Academy of Sciences, Changning Road 865, Shanghai 200050, China.|University of the Chinese Academy of Sciences , Yuquan Road 19, Beijing 100039, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Xu
authors.affiliation: State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology , Chinese Academy of Sciences, Changning Road 865, Shanghai 200050, China.|University of the Chinese Academy of Sciences , Yuquan Road 19, Beijing 100039, China.
authors.forename: Tianchi
authors.initials: T
authors.lastname: Fan
authors.affiliation: State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology , Chinese Academy of Sciences, Changning Road 865, Shanghai 200050, China.|University of the Chinese Academy of Sciences , Yuquan Road 19, Beijing 100039, China.
authors.forename: Yixun
authors.initials: Y
authors.lastname: Gao
authors.affiliation: State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology , Chinese Academy of Sciences, Changning Road 865, Shanghai 200050, China.
authors.forename: Qingguo
authors.initials: Q
authors.lastname: He
authors.affiliation: State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology , Chinese Academy of Sciences, Changning Road 865, Shanghai 200050, China.
authors.forename: Defeng
authors.initials: D
authors.lastname: Zhu
authors.affiliation: State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology , Chinese Academy of Sciences, Changning Road 865, Shanghai 200050, China.
authors.forename: Huimin
authors.initials: H
authors.lastname: Cao
authors.affiliation: State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology , Chinese Academy of Sciences, Changning Road 865, Shanghai 200050, China.
authors.forename: Jiangong
authors.initials: J
authors.lastname: Cheng
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry*; D002619:Chemical Warfare Agents / Q000032:analysis* / Q000737:chemistry; D003124:Colorimetry; D005456:Fluorescent Dyes / Q000032:analysis* / Q000737:chemistry; D015394:Molecular Structure; D009943:Organophosphorus Compounds / Q000032:analysis* / Q000737:chemistry; D011725:Pyridines / Q000737:chemistry*; D014835:Volatilization
chemical_list: C000611704:4-(6-(tert-butyl)pyridine-2-yl)-N,N-diphenylaniline; D000814:Aniline Compounds; D002619:Chemical Warfare Agents; D005456:Fluorescent Dyes; D009943:Organophosphorus Compounds; D011725:Pyridines; C548970:diethylchlorophosphate