A turn-on fluorescent sensor for selective Hg(II) detection in aqueous media based on metal-induced dye formation

A Hg-promoted desulfurization reaction of a thiocarbazone derivative was introduced in the design of a fluorescent sensor for selective Hg(II) detection. Crystal structural and spectroscopic investigations demonstrated the formation of a triazanaphthalene ring and the turn-on responding for Hg(II) in aqueous media.