Dual-mode semisquaraine-based sensor for selective detection of Hg2+ in a micellar medium |
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Authors: | Avirah Rekha R Jyothish Kuthanapillil Ramaiah Danaboyina |
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Affiliation: | Photosciences and Photonics, Chemical Sciences & Technology Division, Regional Research Laboratory (CSIR), Trivandrum 695 019, India. |
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Abstract: | [reaction: see text] A novel chemosensor based on semisquaraine dye (SSQ) for selective detection of Hg2+ is described. SSQ is obtained in quantitative yields from the reaction between squaric acid and 6-ethoxy-2-quinaldinium iodide. SSQ in combination with surfactant shows a dual chromogenic and fluorogenic response selectively toward Hg2+ as compared to Li+, Na+, K+, Ag+, Ca2+, Mg2+, Zn2+, Pb2+, Cd2+, Cu2+, and Fe3+ due to the soft acid nature and size of the mercuric ion. |
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