Hydrogen sulfate ion sensing in aqueous media based on a fused pyrimido benzothiazole derivative

摘要

A sensitive and selective receptor 3-cyano-4-imino-2-methylthio-4H-pyrimido[2,1-b][1,3]benzothiazole (SVK-1) bearing a fused pyrimido benzothiazole structure was developed for the recognition of HSO4- anions. UV-vis and fluorescence emission spectroscopy were employed for the recognition for HSO4- over other anions such as Cl-, Br-, I-, F-, AcO-, H2PO4-, ClO4- and NO3- in an aqueous medium.