title: Anion binding modes in cis-trans-isomers of a binding site-fluorophore-π-extended system.
abstract: The cis- and trans-configurational isomers of 3 are designed and investigated as chemodosimeters for CN(-) ions for the first time. The cis-3 reveals a NIR absorbance at 717 nm (vs. trans-3, 620 nm), and such a configurational difference can be attributed to the acidity as well as position of the binding site (CH group). A probable sensing mechanism involving cyanide-driven carbanion electron-transfer oxidation is proposed.
authors.affiliation: School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, P. R. China. cxliu@sit.edu.cn.
authors.forename: Min
authors.initials: M
authors.lastname: Zhou
authors.forename: Jinju
authors.initials: J
authors.lastname: Chen
authors.forename: Chuanxiang
authors.initials: C
authors.lastname: Liu
authors.forename: Hanghai
authors.initials: H
authors.lastname: Fu
authors.forename: Nan
authors.initials: N
authors.lastname: Zheng
authors.forename: Chuanxiu
authors.initials: C
authors.lastname: Zhang
authors.forename: Yong
authors.initials: Y
authors.lastname: Chen
authors.forename: Jiagao
authors.initials: J
authors.lastname: Cheng
mesh_terms: D001665:Binding Sites; D002623:Chemistry Techniques, Analytical / Q000295:instrumentation*; D009570:Nitriles / Q000032:analysis* / Q000737:chemistry; D013237:Stereoisomerism
chemical_list: D009570:Nitriles