Highly Sensitive Ratiometric Chemosensor for Selective 'Naked-Eye' Nanomolar Detection of Co2+ in Semi-Aqueous Media

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Authors	PATIL S. FEGADE U. SAHOO S.K. SINGH A. MAREK Jaromír SINGH N. BENDRE R. KUWAR A.
Year of publication	2014
Type	Article in Periodical
Magazine / Source	ChemPhysChem
MU Faculty or unit	Central European Institute of Technology
Citation
Web	http://onlinelibrary.wiley.com/doi/10.1002/cphc.201402076/abstract
Doi	http://dx.doi.org/10.1002/cphc.201402076
Field	Physical chemistry and theoretical chemistry
Keywords	analytical chemistry; aqueous media; chemosensors; cobalt; nanomolar detection
Description	An easy-to-prepare chemosensor, (E)-1-(phthalazine-4-yl)-2-(1-(pyridine-2-yl)ethylidene) hydrazine (3), structurally characterized by single X-ray crystallography, is developed for the selective and sensitive detection of Co2+ in aqueous media. Chemosensor 3 shows both absorption and fluorescence responses to Co2+ by forming a 1: 1 complex (among the surveyed metal ions) with a detection limit down to 50 nm. It can also be used as a 'naked-eye' sensor due to the outstanding visible and emission color changes from yellow to red and blue to orange, respectively.
Related projects:	CEITEC - open access