A novel 2,5-diphenyl-1,3,4-oxadiazole derived fluorescent sensor for highly selective and ratiometric recognition of Zn2+ in water through switching on ESIPT

A novel 2,5-diphenyl-1,3,4-oxadiazole derived fluorescent sensor that displays highly selective, sensitive and ratiometric recognition to Zn2+ through switching on ESIPT has been achieved.