Novel fluorescent chemosensing of CN⁻ anions with nanomolar detection using the Zn²⁺–isonicotinohydrazide metal complex

Abstract

A novel chemosensor based on the Zn²⁺–isonicotinohydrazide complex ‘(<bold>ZnL</bold>)’ was developed for the selective detection of cyanide (CN⁻) over other tested anions, such as HSO₄⁻, F⁻, Cl⁻, Br⁻, I⁻, NO₃⁻, PO₄³⁻, SO₄²⁻, SCN⁻, S²⁻, CH₃COO⁻ and H₂PO₄⁻ in 100% aqueous medium.