A turn-on fluorescent sensor for detection of cyanide in aqueous media

2-Hydroxy-1-naphthaldehyde oxime (receptor 1) serves as a selective chemosensor for cyanide anion (CN−). In the presence of CN−, an enhanced fluorescent intensity and red-shift were observed. The observed complexation between receptor 1 and CN− may cause by a hydrogen bonding interaction between the OH group of receptor 1 and CN−.