Abstract
A series of artificial 2,2′-bipyridine receptors (1, 2, 3) containing phenol group have been designed and synthesized. Their anion-binding properties are evaluated for various anions (F−, Cl−, Br−, I−, AcO− and H2PO4−) by UV-vis titration experiment in order to research the impact of different substituents on anion-recognition properties. Results indicate that the anion binding abilities can be tuned by electron push-pull properties of substituents on the phenyl ortho- or para-position of the receptors. In addition, receptor 1 is sensitive for F− detection without the interference of other studied anions, and receptors 2 and 3 are sensitive for H2PO4− detection.
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