Enhanced sensitivity and selectivity in lithium ion recognition property of an oligomeric squaraine dye based fluorescent sensor

Chenthamarakshan, C. R. ; Ajayaghosh, A. (1998) Enhanced sensitivity and selectivity in lithium ion recognition property of an oligomeric squaraine dye based fluorescent sensor Tetrahedron Letters, 39 (13). pp. 1795-1798. ISSN 0040-4039

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00404...

Related URL: http://dx.doi.org/10.1016/S0040-4039(98)00090-2

Abstract

A novel fluorescent sensor based on a pyrrole-derived π -conjugated oligosquaraine containing diethylene glycol monomethyl ether side chain has been synthesized. This molecular wire based fluorescent sensor showed enhanced sensitiviy and specificity towards the recognition of Li+ when compared to Na+ and K+. An analogous simple squaraine dye could not sense any of the metal ions.

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