2-Mercaptobenzothiazole benzoates as highly sensitive fluorescent enhancement chemosensors for transition metal ions

Abstract A new set of 2-mercaptobenzothiazole benzoates for highly sensitive fluorescent chemosensors of transition metal ions was synthesized and their fluorescence enhancement was obtained in the presence of transition metal ions such as Cd 2+ and Hg 2+ , especially Zn 2+ , which results from the suppression of radiationless transitions from the nπ * state in the chemosensors.