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Issue 6, 2010
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A coumarinthiourea conjugate as a fluorescent probe for Hg(II) in aqueous media with a broad pH range 2–12

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Abstract

A coumarinthiourea conjugate (1) behaves as a highly selective fluorescent probe for Hg2+ in aqueous media. The probe 1 shows selective and quantitative fluorescence decrease upon Hg2+ addition in aqueous media with a broad pH range, 2–12. Ab initio molecular orbital calculations reveal that the fluorescence decrease of 1 upon Hg2+ addition is promoted by a Hg2+-induced desulfurization of the thiourea moiety, leading to a decrease in an intramolecular charge transfer (ICT) character of the excited-state coumarin moiety.

Graphical abstract: A coumarin–thiourea conjugate as a fluorescent probe for Hg(ii) in aqueous media with a broad pH range 2–12

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Publication details

The article was received on 18 Nov 2009, accepted on 21 Dec 2009 and first published on 19 Jan 2010


Article type: Paper
DOI: 10.1039/B924015B
Citation: Org. Biomol. Chem., 2010,8, 1310-1314
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    A coumarinthiourea conjugate as a fluorescent probe for Hg(II) in aqueous media with a broad pH range 2–12

    Y. Shiraishi, S. Sumiya and T. Hirai, Org. Biomol. Chem., 2010, 8, 1310
    DOI: 10.1039/B924015B

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