Coordination polymer with selective ion exchange property, and applications thereof

Abstract

The invention relates to coordination polymer with selective ion exchange property, and preparation applications thereof. The coordination polymer is of [Cu(L)2](ClO4)2(H2O)0.5, wherein L shows 2-(2-pyridine)-5-(4-pyridine)-1,3,4-oxadiazole. The coordination polymer is synthesized by adopting a solvent diffusion method. The preparation method comprises the steps of: at normal temperature and normal pressure, placing aqueous Cu(ClO4)2 solution at the bottom of a test tube, dissolving ligand L with methanol, slowly placing at the upper layer of the aqueous Cu(ClO4)2 solution, standing and volatilizing for about a week, thus obtaining a blue blocky monocrystal product. The material has simple preparation process, shorter reaction time and higher productivity, and is easy for postprocessing. Experiments are proved that: ClO4- ions in cavity of the material can selectively have anion exchange with benzoic acid ion. The material overcomes the limits of the existing anion exchange material, is simple for and very easy to carry out exchange process, thus being expected to obtain practical application in the field of ion exchange materials.

Description

technical field The invention belongs to the technical field of synthesis, structure and performance of novel inorganic-organic hybrid materials, and in particular relates to the preparation of a coordination polymer functional material with a three-dimensional skeleton structure and its application in selective anion exchange performance. Background technique In recent years, inorganic-organic hybrid materials, as a new type of molecular functional materials, rely on their unique and diverse topological structures and excellent performance in the fields of ion exchange, adsorption, molecular recognition, catalysis, light, electricity, magnetic and chiral resolution. The huge application potential has attracted more and more attention from scientists from all walks of life (M. O'Keeffe, Chem. Soc. Rev. 2009, 38 , 1215–1217; D. M. Proserpio, Nature Chem. 2010, 2 , 435–436; O. R. Evans, W. Lin, Acc. Chem. Res.2002, 35 , 511–522; R. E. Morris, X. Bu, Nature Chem. 2010, 2 , 3...

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Problems solved by technology

However, currently known coordination polymers with anion exchange function often show certain limitations

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