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A “Turn-On” Fluorescent Sensor for the Selective Detection of Mercuric Ion in Aqueous Media

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journal contribution
posted on 2003-11-26, 00:00 authored by Elizabeth M. Nolan, Stephen J. Lippard
A water-soluble turn-on fluorescent sensor for Hg(II) is described. Incorporation of soft thioether donors into an aniline-derived ligand framework that can be linked to a fluorescein platform affords sensor MS1, which shows a ∼5-fold increase in integrated emission upon addition of 1 equiv of Hg(II). The synthesis and metal-binding properties of MS1 are discussed, and its ability to detect environmentally relevant concentrations of Hg(II) is demonstrated.