The increasing Hg2+contamination in environment and ecosystem has gained wide attention and thus demands for its facile and effective detection.In this study,we constructed a novel fluorescent probe(DCM-Hg)for Hg2+detection by incorporating the 1,3-dithiane group to the dicyanomethylene-4H-pyran fluorophore.This probe can selectively detect Hg2+via the Hg2+-triggered deprotection reaction of thioacetals,which results in a distinct color change from purple to pink and significant fluorescent turn-on signal in the near-infrared(NIR)region.The...
