1-(2-Methoxybenzylidene)-4-phenylthiosemicarbazide as OFF–ON fluorescent chemodosimeter for detection of Cu2+ in acetonitrile–water binary solvents

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Title: 1-(2-Methoxybenzylidene)-4-phenylthiosemicarbazide as OFF–ON fluorescent chemodosimeter for detection of Cu2+ in acetonitrile–water binary solvents
Authors: Liu, Zhao1, Lin, Li-Rong1 linlr@xmu.edu.cn, Huang, Rong-Bin1, Zheng, Lan-Sun2
Source: Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy. Dec2008, Vol. 71 Issue 4, p1212-1215. 4p.
Subjects: Solvents, Acetonitrile, Dosimeters, Copper ions, Ring formation (Chemistry), Fluorescence spectroscopy, Triazoles
Abstract: 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. [Copyright &y& Elsevier]
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Database: Engineering Source
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Abstract: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. [Copyright &y& Elsevier]
ISSN:13861425
DOI:10.1016/j.saa.2008.03.027