A simple ratiometric terpyridine-Cd(ll) complex was synthesized by the treatment of CdCl with terpyridine ligand 4'-(4-N,N'-dimethylaminophenyl)-2,2':6',2″-terpyridine. The synthesized complex was found to act as a selective fluorescent chemosensor for pyrophosphate PO (PPi) over other anions like F, Cl, Br, CO, SO, AcO, NO, and HPO. Furthermore, the receptor probe was also successfully employed in HeLa cell for PPi detection, which indicates this can be used as a chemosensor for cells.
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