Abstract
Fluorescent chemosensors serve as an efficient tool for selective detection of toxic metal ions (Hg2+, Cd2+, Pb2+, etc.) in the environment. This review is focused on optical metal ion recognition with employment of calixarene-based sensors containing one or more dansyl fluorophore groups. The effect of structural variations, including the mode of dansyl unit attachment, calixarene scaffold type and conformation, as well as the identity and pattern of upper- and lower-rim substituents on the selectivity and sensitivity of these fluoroionophores towards hazardous metal ions is discussed.
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