Liu Zhao, Lin Li-Rong, Huang Rong-Bin, Zheng Lan-Sun
Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, PR China.
Spectrochim Acta A Mol Biomol Spectrosc. 2008 Dec 15;71(4):1212-5. doi: 10.1016/j.saa.2008.03.027. Epub 2008 Mar 27.
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.
研究了一种新型荧光化学传感器——1-(2-甲氧基亚苄基)-4-苯基硫代氨基脲。在乙腈和水的二元溶液90:10（v/v）混合物中，它对Cu2+表现出高选择性，而对其他竞争性阳离子的响应非常低。Cu2+促使硫代氨基脲环化形成1,2,4-三唑-3(4H)-硫酮环，导致开启荧光现象的出现。
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