A novel coumarin-based fluorescent sensor CFe1 containing imine and thiourea groups was designed and synthesized. It showed good sensitivity and selectivity for Fe3+ ion over other commonly coexistent metal ions with fluorescent enhancement and blue-shift.
AbstractA new fluorescent sensor based on a benzimidazole unit bearing bis(ethoxycarbonylmethyl)amino groups was designed and synthesized. The ligand exhibits strong sensitivity and selectivity for Ag+ by enhanced fluorescent intensity in the presence of a wide range of other tested metal ions in methanol. The colorimetric and fluorescent response to Ag+ can be conveniently detected even by the naked eye, which offers a facile method for visual detection of Ag+.
A novel fluorescent sensor based on sulfur and nitrogen co-doped carbon dots with excellent stability for selective detection of doxycycline in raw milk