title: Rational design, synthesis of reaction-based dual-channel cyanide sensor in aqueous solution.
abstract: A new dual-channel sensor for the detection of cyanide was developed based on the conjugated of naphthalene and malononitrile. Upon the addition of CN(-), the sensor displayed very large blue-shift in both fluorescence (80nm) and absorption (120nm) spectra. The sensor of cyanide was performed via the nucleophilic attack of cyanide anion to vinylic groups of the sensor with a 1:1 binding stoichiometry and the color changed of the sensor is mainly due to the intramolecular charge transfer process improvement. The intramolecular charge transfer progress was blocked with color changed and fluorescence blue-shift. The mechanism of sensor reaction with CN(-) ion was studied using (1)H NMR and mass spectrometry.
authors.affiliation: School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China.
authors.forename: Jun-Jian
authors.initials: JJ
authors.lastname: Li
authors.affiliation: School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Wei
authors.affiliation: School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China.
authors.forename: Xiao-Liang
authors.initials: XL
authors.lastname: Qi
authors.affiliation: School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Xu
authors.affiliation: School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China.
authors.forename: Yu-Cheng
authors.initials: YC
authors.lastname: Liu
authors.affiliation: School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China. Electronic address: linqh@njust.edu.cn.
authors.forename: Qiu-Han
authors.initials: QH
authors.lastname: Lin
authors.affiliation: School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China. Electronic address: weidong@njust.edu.cn.
authors.forename: Wei
authors.initials: W
authors.lastname: Dong
mesh_terms: D003486:Cyanides / Q000032:analysis*; D005456:Fluorescent Dyes / Q000737:chemistry*; D009281:Naphthalenes / Q000737:chemistry; D009570:Nitriles / Q000737:chemistry; D013050:Spectrometry, Fluorescence / Q000379:methods; D014867:Water / Q000032:analysis*
chemical_list: D003486:Cyanides; D005456:Fluorescent Dyes; D009281:Naphthalenes; D009570:Nitriles; D014867:Water; C031721:naphthalene; C000945:dicyanmethane
keywords: Cyanide (CN(−)); Donor-π-acceptor; Dual-channel; Intramolecular charge transfer; Reaction-based