期刊
CHEMISTRY-AN ASIAN JOURNAL
卷 5, 期 7, 页码 1692-1699出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201000063
关键词
chromogenic probes; cyanides; environmental chemistry; heterocycles; mercury
资金
- Ministerio de Ciencia e Innovacion, Spain [CTQ2006-15456-004-04BQU, CTQ2009-12631-BQU]
- Junta de Castilla y Leon
- Consejeria de Educacion y Cultura y Fondo Social Europeo [BU023A09, GR170]
The synthesis of some new polysulfur-nitrogen heterocycles by cycloaddition of an ynamine to bisdithiolothiazine ketothiones or dithiones is described and the interconversion between regioisomers is studied by DFT calculations, showing that the double bond isomerizes at room temperature. This series is a new selective and sensitive chromogenic probe for the naked-eye detection of mercury(II) cation and cyanide anion in buffered (HEPES 0.05M, pH 7.14) water/acetonitrile 1:1 mixture, with sub-micromolar sensitivity, and constitutes the first example of a new class of colorimetric chemical probes for Hg2+ and CN-.
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