Analytical Sciences

Small-Molecule Fluorescent Chemosensors for Hg²⁺ Ion

Jun Feng ZHANG and Jong Seung KIM

Department of Chemistry, Korea University, Seoul 136-701, Korea

Fluorometric determination techniques for mercury (Hg²⁺) assays have been very popular in recent years. This review focuses mainly on advances in the field of fluorescent sensors, concerning the detection of Hg²⁺ ion, that have been developed over the last few years. Based on a difference among the bearing functional fluorophores, these works are divided into two major sections. In the first section, rhodamine-derived Hg²⁺ ion sensors have been reviewed according to the essential mechanisms that work together with the spirolactam ring opening reaction. Various fluorescence Hg²⁺ ion sensors based on other functional fluorophores are discussed in the second section, divided by their recognition mechanisms that used for the signal responses.

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