An excited-state intramolecular proton transfer (ESIPT) mechanism based two reactive probes HBTCo and HBTCu is reported for the selective detection of Co(2+) and Cu(+) respectively in a reducing aqueous environment. Co(2+) and Cu(+) mediated oxidative benzylic ether (C-O) bond cleavage offers ratiometric detection of these metal ions.
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Maity et al. (2012) studied this question.
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