Retracted Article: Hydrogen sulfate ion sensing in aqueous media based on a fused pyrimido benzothiazole derivative

Abstract

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.