A Formyl Chromone Based Schiff Base Derivative: An Efficient Colorimetric and Fluorescence Chemosensor for the Selective Detection of Hg2+ Ions

A novel chromone-based Schiff base L was designed and synthesized by condensing an equimolar amount of 3-formyl chromone and 2,4-dinitro phenyl hydrazine. Schiff base L was developed as a potent colorimetric and fluorescent molecular probe to recognize Hg2+ ions over other competitive metal ions. In...

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Bibliographic Details
Published in:Journal of fluorescence 2023-12
Main Authors: Kar, Soumya Ranjan, Dash, Pragyan Parimita, Panda, Sankalpa Narayan, Mohanty, Patitapaban, Mohanty, Debasis, Barick, Aruna Kumar, Sahoo, Suban Kumar, Mohapatra, Priyaranjan, Jali, Bigyan Ranjan
Format: Article
Language:English
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Summary:A novel chromone-based Schiff base L was designed and synthesized by condensing an equimolar amount of 3-formyl chromone and 2,4-dinitro phenyl hydrazine. Schiff base L was developed as a potent colorimetric and fluorescent molecular probe to recognize Hg2+ ions over other competitive metal ions. In the presence of Hg2+, Schiff base L displays a naked-eye detectable color change under day and UV365 nm light. Various UV-Vis and fluorescence studies of L were performed in the absence and presence of Hg2+ to determine the sensitivity and the sensing mechanism. With high selectivity and specificity, the detection limit and association constant of L for Hg2+ were estimated at 1.87 µM and 1.234 × 107 M-1, respectively. The developed sensor L was applied to real soil samples for the detection of Hg2+.
ISSN:1053-0509
1573-4994
DOI:10.1007/s10895-023-03500-z