Colorimetric and Fluorescent Signaling of Au3+ by Desulfurization of Thiocoumarin
- Authors
- Park, Ji Eun; Choi, Myung Gil; Chang, Suk-Kyu
- Issue Date
- Mar-2012
- Publisher
- AMER CHEMICAL SOC
- Citation
- INORGANIC CHEMISTRY, v.51, no.5, pp 2880 - 2884
- Pages
- 5
- Journal Title
- INORGANIC CHEMISTRY
- Volume
- 51
- Number
- 5
- Start Page
- 2880
- End Page
- 2884
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/20446
- DOI
- 10.1021/ic202080v
- ISSN
- 0020-1669
1520-510X
- Abstract
- 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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