Fluorescent turn-on Zn2+ sensing in aqueous and cellular media

초록

A naphthalimide-based water soluble Zn2+ sensor bearing polyamino carboxylate as a metal chelating moiety was synthesized and its application for the selective detection of Zn2+ ion in 100% aqueous solution is demonstrated. The newly developed fluorescent sensor exhibits selective binding affinity towards Zn2+ and pH insensitivity in biologically relevant range. Confocal fluorescent microscopy images indicate that this probe works effectively for intracellular Zn2+ imaging with high cell permeability. (C) 2011 Elsevier B.V. All rights reserved.

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