title: 1-(2-methoxybenzylidene)-4-phenylthiosemicarbazide as OFF-ON fluorescent chemodosimeter for detection of Cu2+ in acetonitrile-water binary solvents.
abstract: A novel fluorescent chemodosimeter, 1-(2-methoxybenzylidene)-4-phenylthiolsemicarbazide, was studied. In 90:10 (v/v) mixture of CH3CN and water binary solution, it exhibits high selectivity toward Cu2+ but very low response toward other competitive cations. The Cu2+ promoting cyclization of the thiosemicarbazide to 1,2,4-triazole-3(4H)-thione ring results in observation of the turn-on fluorescence.
authors.affiliation: Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China.
authors.forename: Zhao
authors.initials: Z
authors.lastname: Liu
authors.forename: Li-Rong
authors.initials: LR
authors.lastname: Lin
authors.forename: Rong-Bin
authors.initials: RB
authors.lastname: Huang
authors.forename: Lan-Sun
authors.initials: LS
authors.lastname: Zheng
mesh_terms: D000097:Acetonitriles / Q000737:chemistry; D002412:Cations; D003300:Copper / Q000737:chemistry; D018360:Crystallography, X-Ray / Q000379:methods; D005456:Fluorescent Dyes / Q000494:pharmacology; D006863:Hydrogen-Ion Concentration; D009682:Magnetic Resonance Spectroscopy; D008670:Metals / Q000737:chemistry; D008956:Models, Chemical; D008958:Models, Molecular; D012663:Semicarbazides / Q000737:chemistry*; D012997:Solvents; D013050:Spectrometry, Fluorescence / Q000379:methods*; D013053:Spectrophotometry / Q000379:methods; D013882:Thiosemicarbazones / Q000737:chemistry*; D014867:Water / Q000737:chemistry
chemical_list: C538805:1-(2-methoxybenzylidene)-4-phenylthiosemicarbazide; D000097:Acetonitriles; D002412:Cations; D005456:Fluorescent Dyes; D008670:Metals; D012663:Semicarbazides; D012997:Solvents; D013882:Thiosemicarbazones; D014867:Water; C010059:carbamylhydrazine; D003300:Copper; C032159:acetonitrile