A simple but highly selective and sensitive fluorescence reporter for toxic CdII ion via excimer formation

N-methyl isatin nanoparticles as a novel probe for selective detection of Cd2+ ion in aqueous medium based on chelation enhanced fluorescence and application to environmental sample

“…ES ‡, the Hill coefficient (n) is 1.9326 indicating two units of the monomer in nanoparticle binds the Cd 2+ cation guest with a ratio 2:1 which is in agreement with the stoichiometry 2:1 obtained from Job's plot. The binding constant (K B ) was evaluated using modified Benesi-Hildebrand (B-H) equation given below [51,52].…”