Oxidative cyclization of thiosemicarbazone: an optical and turn-on fluorescent chemodosimeter for Cu(II)

被引：60

作者：

Basu, Arghya ^{[1
]}

Das, Gopal ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem, Gauhati 781039, Assam, India

来源：

DALTON TRANSACTIONS | 2011年 / 40卷 / 12期

关键词：

SOLID-PHASE SYNTHESIS; ALDEHYDE THIOSEMICARBAZONES; HG2+-SELECTIVE CHEMODOSIMETER; ENHANCED FLUORESCENCE; SELECTIVE FLUORESCENT; AQUEOUS-SOLUTION; HG(II) DETECTION; METAL-IONS; HG2+ IONS; CU-II;

D O I：

10.1039/c0dt01549k

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A weakly fluorescent thiosemicabazone (L1H) was found to be a selective optical and "turn-on" fluorescent chemodosimeter for Cu2+ ion in aqueous medium. A significant fluorescence enhancement along with change in color was only observed for Cu2+ ion; among the other tested metal ions (viz. Na+, K+, Mg2+, Ca2+, Cr3+, Zn2+, Cd2+, Hg2+, Pb2+, Ag+, Ni2+, Co2+, Fe3+ and Mn2+). The Cu2+ selectivity resulted from an oxidative cyclization of the weak fluorescent L1H into highly fluorescent rigid 4,5-dihydro-5,5-dimethyl-4-(naphthalen-5-yl)-1,2,4-triazole-3-thione (L-2). The signaling mechanism has been confirmed by independent synthesis with detail characterization of L-2.

引用

页码：2837 / 2843

页数：7

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