Highly sensitive and selective determination of cupric ions by using N,N′-bis(salicylidene)-o-phenylenediamine as fluorescent chemosensor and related applications

The fluorescence of N,N′-bis(salicylidene)-o-phenylenediamine can be dramatically quenched by Cu2+ ions through the formation of a (1:1, metal-to-ligand) complex and a new sensitive and selective “On-Off” fluorescence method could be developed for determination of Cu2+.