Metallic silver coordination polymer with three-dimensional network structure, and preparation method and application thereof

Abstract

The invention relates to 3,4-di(2-pyridyl)-5-(4-pyridyl)-1,2,4-triazole-silver (I) coordination polymer, and preparation and application thereof. The coordination polymer is synthesized by the following steps of: mixing an acetonitrile solution of AgNO2 and a chloroform solution of ligand L at normal temperature and normal pressure, keeping stirring for half an hour, and standing and volatizing for about one week under the shading condition to obtain a colorless blocky monocrystal product. The coordination polymer is easy to prepare, reaction time is short, the aftertreatment step is simple, and the coordination polymer is high in yield. Through the experiment, nitrite ions in the material can be selectively subjected to anion exchange reaction with fluoboric acid ions, hexafluorosilicic acid ions, nitrate radical ions and perchloric acid ions, and cannot be subjected to similar anion exchange reaction with benzoic acid ions, and acetate ions. The coordination polymer overcomes the limit of the conventional anion exchange material, an exchange process is simple and easy to realize, and the coordination polymer is expected to be actually applied in the field of ion exchange materials.

Description

This application was supported by Tianjin Natural Science Foundation (No.10JCZDJC21800); National Natural Science Foundation of China (21101116). 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 material with a three-dimensional network structure and its application in selective anion exchange. Background technique In recent years, the design and synthesis of coordination polymers using crystal engineering strategies has attracted widespread attention due to their novel and interesting crystal structures and their great application potential in the fields of optics, magnetism, adsorption, ion exchange, and catalysis. (S. L. James, Chem. Soc. Rev. 2003, 32, 276-288; B. Moulton, M. J. Zaworotko, Chem. Rev. 2001, 101, 1629-1658; L. Carlucci, G. Ciani, D. M. Proserpio, Coord. Chem. Rev. 2003, 246, 247-289; J. J....

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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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