Add time:08/09/2019         Source:sciencedirect.com

We report a 2-(4-amino-2-hydroxyphenyl)benzothiazole based Schiff-base, found to be sensitive to the presence of HSO4− and I− ions as demonstrated by modulation of the various photophysical properties in the presence of these ions in solution and biological enviornments (nematodes). Various spectroscopic and TD-DFT calculations have revealed that while the molecular probe detects HSO4− ions via hydrolytic cleavage and subsequent emission enhanced mechanism, the detection of I− ions is accomplished via the formation of intermolecular charge transfer complex and the subsequent heavy atom quenching mechanism. Additionally the potential of the probe for the on site detection of vapours of ethylacetate at workplaces has been demonstrated.

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