title: The anion recognition properties of Schiff base or its reductive system based on 2,2'-bipyridine derivatives.
abstract: Two novel artificial receptors, 2,2'-bipyridine derivatives containing phenol group, have been designed and synthesized. The interaction of the receptors containing Schiff base or its reductive system with biologically important anions was determined by UV-vis and (1)H NMR titration experiments. Results indicate that receptors 1 and 2 show the strong binding ability for dihydrogen phosphate (H(2)PO(4)(-)), fluoride (F(-)), acetate (AcO(-)) and almost no binding ability for chloride (Cl(-)), bromide (Br(-)), iodide (I(-)). At the same time, the strongest binding ability of receptor 1 for H(2)PO(4)(-) among studied anions is not influenced by the existence of other anions; as well as receptor 2 for F(-). In addition, the binding ability of receptor 1 (Schiff base system) with various anions is stronger than that of receptor 2 (the reductive Schiff base system) due to the difference of electronic effect.
authors.affiliation: Xinxiang Medical University, Xinxiang Henan 453003, People's Republic of China. shangxuefang@mail.nankai.edu.cn
authors.forename: Xue-Fang
authors.initials: XF
authors.lastname: Shang
mesh_terms: D000838:Anions / Q000737:chemistry*; D015394:Molecular Structure; D010084:Oxidation-Reduction; D011725:Pyridines / Q000737:chemistry*; D012545:Schiff Bases / Q000737:chemistry*
chemical_list: D000838:Anions; D011725:Pyridines; D012545:Schiff Bases