title: Intramolecular proton transfer through the adjoining π-conjugated system in Shiff base: application for colorimetric sensing of fluoride anion.
abstract: In this paper, a new kind of phenol-based chemsensor L2 comprised of a Schiff base and azo groups was rationally designed and synthesized. It could selectively recognize fluoride anion among tested anions such as F(-), AcO(-), H2PO4(-), Cl(-), Br(-), and I(-) with obvious color changes from yellow to fuchsia. The intramolecular PT (proton transfer) in L1 and L2 was responsible for the sensing ability, which was certified by the (1)H NMR and Uv-vis experiments.
authors.affiliation: College of Chemistry and Material Sciences, Hebei Normal University, Yuhua Road 113, Shijiazhuang 050024, PR China; College of Science and Hebei Research Center of Pharmaceutical and Chemical Engineering, Hebei University of Science and Technology, Yuhua Road 70, Shijiazhuang 050080, PR China. Electronic address: 081022009@fudan.edu.cn.
authors.forename: Xudong
authors.initials: X
authors.lastname: Yu
authors.affiliation: College of Chemistry and Material Sciences, Hebei Normal University, Yuhua Road 113, Shijiazhuang 050024, PR China.
authors.forename: Ping
authors.initials: P
authors.lastname: Zhang
authors.affiliation: College of Science and Hebei Research Center of Pharmaceutical and Chemical Engineering, Hebei University of Science and Technology, Yuhua Road 70, Shijiazhuang 050080, PR China.
authors.forename: Yajuan
authors.initials: Y
authors.lastname: Li
authors.affiliation: College of Science and Hebei Research Center of Pharmaceutical and Chemical Engineering, Hebei University of Science and Technology, Yuhua Road 70, Shijiazhuang 050080, PR China.
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Zhen
authors.affiliation: College of Science and Hebei Research Center of Pharmaceutical and Chemical Engineering, Hebei University of Science and Technology, Yuhua Road 70, Shijiazhuang 050080, PR China.
authors.forename: Lijun
authors.initials: L
authors.lastname: Geng
authors.affiliation: College of Science and Hebei Research Center of Pharmaceutical and Chemical Engineering, Hebei University of Science and Technology, Yuhua Road 70, Shijiazhuang 050080, PR China.
authors.forename: Yanqiu
authors.initials: Y
authors.lastname: Wang
authors.affiliation: College of Chemistry and Material Sciences, Hebei Normal University, Yuhua Road 113, Shijiazhuang 050024, PR China. Electronic address: ma7405@hebtu.edu.cn.
authors.forename: Zichuan
authors.initials: Z
authors.lastname: Ma
mesh_terms: D015057:1-Naphthylamine / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry; D000838:Anions / Q000737:chemistry; D003124:Colorimetry; D005459:Fluorides / Q000032:analysis*; D009682:Magnetic Resonance Spectroscopy; D011522:Protons; D011720:Pyrazoles / Q000138:chemical synthesis / Q000737:chemistry*; D011789:Quantum Theory; D012545:Schiff Bases / Q000737:chemistry*
chemical_list: D000838:Anions; D011522:Protons; D011720:Pyrazoles; D012545:Schiff Bases; D015057:1-Naphthylamine; D005459:Fluorides
keywords: Anion recognition; Azo dye; Fluoride; Intramolecular proton transfer