A review on fluorimetric and colorimetric detection of metal ions by chemodosimetric approach 2013–2021

The present review focus on the fluorimetric and colorimetric chemodosimeters developed during the past 9 years for sensing of environmentally and biologically important metal ions. It includes a variety of metal ions like Hg2+, Cu2+, Fe3+, Pd2+, Pb2+, Al3+, U2+, Ce4+, Au3+, Zn2+, Cr3+, Ag+, Ni2+ and Nb2+. The sensing mechanism of the probe for each metal ion is further classified based on the reactions involved, such as oxidation or hydrolysis of functional units, desulfurization reaction of thioamides, thioureas and thiones, cyclisation, ring-opening reactions, depropargylation, metalation of coordination sites etc. This review includes 274 references.