Sequential recognition of zinc ion and hydrogen sulfide by a new quinoline derivative with logic gate behavior

Abstract

A Schiff base-type fluorescent chemosensor <bold>L</bold> has been synthesized for Zn²⁺ detection, and the consequent product of <bold>L</bold> and Zn²⁺, <bold>L–2Zn</bold>, is an excellent indicator for H₂S for displacement of Zn²⁺ from the complex <bold>L–2Zn</bold>.