Abstract
Abstract Selective and specific detection of Hg2+ and Ag+ ions has been enabled by a prudently developed new schiff base probe (L) in a differentially responsive manner of emission intensity. An exciting aspect of the devised ligand is its efficient detection ability of Hg2+ and Ag+ ions by two different fluorometric responses: a TURN-ON signal for Hg2+ and a TURN-OFF response for Ag+. The sensing aptitude of the analytes in concern in 1:1 (v/v) acetonitrile/HEPES Buffer (10 mM, pH 7.4) mixed aqueous medium further make it an encouraging prospect for practical applications. The functioning of two different mechanisms for judicious distinction and detection of the Hg2+ and Ag+ ions has also been successfully validated. Sensing of Hg2+ proceeds via conventional metal chelation enhanced fluorescence mechanism (CHEF) whereas detection of Ag+ follows from the formation of nano-sized aggregates in the working medium.
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