期刊
INORGANIC CHEMISTRY
卷 51, 期 5, 页码 2880-2884出版社
AMER CHEMICAL SOC
DOI: 10.1021/ic202080v
关键词
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资金
- Korea Research Foundation of Korean Government [2011-0004870]
We investigated the chemosignaling of Au3+ by the selective desulfurization of thiocoumarin. In the presence of a heavy metal ion chelator N,N,N',N'-tetrakis-(2-pyridylmethyl)ethylenediamine, thiocoumarin was selectively converted to its oxo analogue by reaction with Au3+, resulting in a pronounced chromogenic and fluorescent signaling. Selective signaling of Au3+ was possible in the presence of common alkali, alkaline earth, and transition metal ions, as well as Au+ in a mixed aqueous environment. The colorimetric determination of Au3+ was possible by the color change from pink to yellowish green of the designed probe. The detection limit for the determination of Au3+ in 50% aqueous acetonitrile was 1.1 x 10(-7) M.
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