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  • Title: Two birds with one stone: multifunctional and highly selective fluorescent probe for distinguishing Zn2+ from Cd2+ and selective recognition of sulfide anion.
    Author: Hou JT, Liu BY, Li K, Yu KK, Wu MB, Yu XQ.
    Journal: Talanta; 2013 Nov 15; 116():434-40. PubMed ID: 24148426.
    Abstract:
    A coumarin-based multifunctional fluorescent sensor containing a di-2-picolylamine (DPA) moiety (1) was presented. Interestingly, this probe could similarly act as ON-OFF type fluorescent sensor for Co(2+) and Cu(2+), then in situ generated 1-Co(II) and 1-Cu(II) ensembles could further serve as OFF-ON type fluorescent sensors to achieve the discrimination of Zn(2+) from Cd(2+) and selective recognition of sulfide anion in aqueous solution via displacement approach, respectively. Specially, 1-Cu(II) could permeate the cell membrane and could be used in fluorescence imaging of S(2-) in living biological samples. These ON-OFF-ON type fluorescent sensors exhibited high selectivity and sensitivity towards the targets.
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