Highly sensitive turn-off fluorescent detection of cyanide in aqueous medium using dicyanovinyl-substituted phenanthridine fluorophore.

ABSTRACT: Herein, the turn-off fluorescence sensor of 2-((4'-(7,8,13,14-tetrahydrodibenzo[a,i]phenanthridin-5-yl)-[1,1'-biphenyl]-4-yl)methylene)malanonitrile (7) was developed for the recognition of CN^- ions and studied using different spectroscopic techniques. The selective recognition of CN^- ions by 7 was investigated via UV-vis spectroscopy and fluorescence studies in acetonitrile solvent, which exhibited an obvious color change from orange to colorless under 365 UV light. The sensor compound 7 possesses a high binding constant (K _a) for CN^- ions in the order of 5.22 × 10⁶ M^-1. The results from the interference studies revealed that probe 7 shows high sensing selectivity and sensitivity for CN^-

SUBMITTER: Manickam S 

PROVIDER: S-EPMC9050552 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature