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  • Title: Coumarin-Cu(II) ensemble-based cyanide sensing chemodosimeter.
    Author: Jung HS, Han JH, Kim ZH, Kang C, Kim JS.
    Journal: Org Lett; 2011 Oct 07; 13(19):5056-9. PubMed ID: 21875122.
    Abstract:
    An "ensemble"-based chemodosimeter 1-Cu(II) for cyanide detection is reported. 1-Cu(II) can recognize a cyanide ion over other anionic species to show a marked fluorescence enhancement under aqueous conditions. "Off-on" fluorescence change of 1-Cu(II) is proceeded by addition of cyanide, which induces decomplexation of the Cu(II) ion from nonfluorescent 1 followed by hydrolytic cleavage of the resulted Schiff base to give a strongly fluorescent coumarinaldehyde (2). The selective detection of cyanide with 1-Cu(II) for biological application was also performed in HepG2 cells.
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