Rhodamine Triazole-Based Fluorescent Probe for the Detection of Pt2+

A rhodamine triazole-based fluorescent chemosensor has been developed for the selective detection of platinum ions in aqueous solutions. The rhodamine 6G hydroxamate linked with a propargyl group is converted to the corresponding triazole by a click reaction. The dual binding unit composed of a hydroxamate and a triazole shows high selectivity and sensitivity toward Pt2+ over a range of other metal ions In water. The fluorescent probe is applied to monitor cisplatin in aqueous solutions.