Metallic silver coordination polymer with two-dimensional lamellar structure, and preparation and application thereof

Abstract

The invention relates to a 3,5-di(2-pyridyl)-4-(4-pyridyl)-1,2,4-triazolyl-silver (I) coordination polymer, and a preparation and application thereof. The compound is synthesized by the following steps: under normal temperature and pressure, mixing AgNO2 acetonitrile solution and ligand L chloroform solution, and keeping stirring for half an hour, and standing in a dark place to volatilize for about one week, thereby obtaining the colorless lumpy monocrystal product. The invention has the advantages of simple preparation technique, short reaction time, easy after-treatment and high yield. The experiment proves that nitrite ions in the material can selectively react with tetrafluoroborate ions, hexafluorosilicate ions, nitrate ions and perchlorate in an anion exchange mode, and benzoate ions and acetate ions can not perform similar anion exchange reaction. The material overcomes the limitation to the existing anion exchange material, the exchange process is simple and easy to implement, and thus, the invention is hopeful to 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 material with a two-dimensional layered structure, more specifically 3,5-bis( 2-pyridyl)-4-(4-pyridyl)-1,2,4-triazole-silver coordination polymer and its preparation and application in selective anion exchange. Background technique With the development of coordination chemistry, the introduction of the concept of crystal engineering into the design of coordination supramolecular structures has extended an important branch of the discipline—coordination polymer (Coordination Polymer). It is defined as a class of crystalline materials with a highly regular infinite network structure and special physical and chemical properties formed by the assembly of ligand molecules or ions and metal ions through coordination bonds. The research on coordination polymers spans ...

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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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