Solid fluorescence sensors obtained by functionalization of photocrosslinked water-swollen acrylic membranes with 4-piperazine naphthalimide derivatives

摘要: Abstract A photocrosslinked membrane (M-Cl) based on vinyl-pyrrolidone/butyl acrylate containing ethylene glycol dimethacrylate as a crosslinking agent and methacryloyl chloride reactive monomer has been prepared for further functionalization. series of hydroxy substituted piperazine naphthalimide compounds have synthetized pH sensitive Off-On fluorescence probes using two methods: microwave reflux. Three the derivatives were selected to be anchored M-Cl through acid groups by Schotten-Baumann reaction. All obtained water-swollen membranes characterized different techniques. Photo-induced electron transfer (PET) its pH-dependent optical changes investigated various photochemical parameters determined absorption spectroscopies. In range 9.0–4.0, these solid sensors undergo PET process from moiety leading quenching. However, in 4.0–1.0, is inhibited give enhancement. The sensitivity functionalized depended size position substituents.