Dual-mode semisquaraine-based sensor for selective detection of Hg2+ in a micellar medium.
[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.
Avirah
Rekha R
RR
Photosciences and Photonics, Chemical Sciences & Technology Division, Regional Research Laboratory (CSIR), Trivandrum 695 019, India.
Jyothish
Kuthanapillil
K
Ramaiah
Danaboyina
D
D002413:Cations, Divalent / Q000737:chemistry; D003503:Cyclobutanes / Q000138:chemical synthesis / Q000737:chemistry*; D008628:Mercury / Q000737:chemistry*; D008823:Micelles; D008958:Models, Molecular; D015394:Molecular Structure; D010636:Phenols / Q000138:chemical synthesis / Q000737:chemistry*; D013057:Spectrum Analysis; D055672:Static Electricity
D002413:Cations, Divalent; D003503:Cyclobutanes; D008823:Micelles; D010636:Phenols; C480596:squaraine; D008628:Mercury