Novel fluorescent chemosensing of CN− anions with nanomolar detection using the Zn2+–isonicotinohydrazide metal complex†
Abstract
A novel chemosensor based on the Zn2+–isonicotinohydrazide complex ‘(ZnL)’ was developed for the selective detection of cyanide (CN−) over other tested anions, such as HSO4−, F−, Cl−, Br−, I−, NO3−, PO43−, SO42−, SCN−, S2−, CH3COO− and H2PO4− in 80% MeOH (organic–aqueous medium). The detection of CN− with (ZnL) could be possible with both UV-visible and fluorescence responses without any interference effects from other anions. This system shows excellent sensitivity with a lower detection limit of 5.49 nM.