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This paper describes the identification of a per-acetyl glycosyl rhodamine B (RB) derivative, KB2, simply prepared by a click reaction, as a novel fluorescent ratiometric probe for mercury (II). In an 80% aqueous solution, KB2 responded to Hg2+ in a ratiometric manner with a good selectivity over a range of metal cations. Upon formation of a 1:1 probe-ion complex, the blue fluorescence of the per-acetyl...
7-Nitrobenzo-2-oxa-1,3-diazole (NBD) derived compound 1 bearing triazole binding site was used as a selective fluorescent and colorimetric sensor for Hg 2+ in aqueous solution. Among the metal ions examined, only Hg 2+ caused significant fluorescence quenching in EtOH/HEPES (v/v=9:1) at pH 7.4, along with a remarkable red shift in both absorption and fluorescence spectra which then...
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