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  • Title: Recognition of copper and hydrogen sulfide in vitro using a fluorescein derivative indicator.
    Author: Hou F, Cheng J, Xi P, Chen F, Huang L, Xie G, Shi Y, Liu H, Bai D, Zeng Z.
    Journal: Dalton Trans; 2012 May 21; 41(19):5799-804. PubMed ID: 22437757.
    Abstract:
    We report the development of a fluorescein-based chemosensor (L1) for monitoring ions or micromolecules (H(2)S). Copper ions are known to be toxic at high concentrations and hydrogen sulfide induces various problems. Herein we develop a simple method for detecting Cu(II) and H(2)S with high selectivity and sensitivity. The chemosensor L1 displays on-off-on type fluorescence change with alternately added Cu(II) and H(2)S to the media along with reversible forming-separating of the complex. The potential biomedical relevance of the chemical mechanisms involved in the detection of L1 is described.
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