title: A fluorescent turn-on probe based on benzo [e] indolium for cyanide ion in water with high selectivity.
abstract: A highly selective fluorescent turn-on probe for CN(-) bearing a benzo [e] indolium group as a fluorophore and binding site was reported. The detection of CN(-) was performed via the nucleophilic attack of CN(-) toward the benzo [e] indolium group of the probe, resulting in a prominent fluorescence enhancement and an obvious color change. The probe shown a highly selectivity in water and could be performed in a range of pH value between 6 and 9. The detection limit was 4.6 × 10(-8) M, which could be detected CN(-) in drinking water. A simple paper test strip system for the rapid monitoring of CN(-) was developed.
authors.affiliation: School of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030024, China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Sun
authors.forename: Shanwei
authors.initials: S
authors.lastname: Fan
authors.forename: Dong
authors.initials: D
authors.lastname: Zhao
authors.forename: Lian
authors.initials: L
authors.lastname: Duan
authors.forename: Ruifeng
authors.initials: R
authors.lastname: Li
mesh_terms: D003486:Cyanides / Q000032:analysis*; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007211:Indoles / Q000138:chemical synthesis / Q000737:chemistry*; D007477:Ions / Q000032:analysis; D015394:Molecular Structure; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D014867:Water / Q000737:chemistry
chemical_list: D003486:Cyanides; D005456:Fluorescent Dyes; D007211:Indoles; D007477:Ions; C000591732:benzo(e)indolium; D014867:Water