A highly selective and instantaneously responsive Schiff base fluorescent sensor for the “turn-off” detection of iron(<scp>iii</scp>), iron(<scp>ii</scp>), and copper(<scp>ii</scp>) ions

Abstract

A new and tri-responsive fluorescent Schiff base probe (DBAB) has been designed and developed for the recognition of iron(<sc>iii</sc>) ions (Fe³⁺), iron(<sc>ii</sc>) ions (Fe²⁺) and copper(<sc>ii</sc>) ions (Cu²⁺) simultaneously.