Coordination polymer with three-dimensional open-framework structure as well as preparation and application thereof

Abstract

The invention relates to a coordination polymer with a three-dimensional open-framework structure as well as preparation and application thereof. The chemical formula of the coordination polymer is: [CdL2] (ClO4)2, wherein the L is 3, 5-bis (2-pyridyl)-4-(4-pyridyl)-1,2,4-triazole. The synthesis of the compound adopts a method of stirring at a normal temperature. The preparation comprises the steps of: mixing an aqueous solution of Cd (ClO4)2 with a methanol solution of the ligand L at the normal temperature and pressure, filtering the reaction solution after stirring, standing the filtrate, slowly volatilizing the solvent and obtaining colourless blocky monocrystal products after about one week. The preparation of the coordination polymer is simple in process, short in reaction time, easy in aftertreatment and higher in yield. The coordination polymer has the three-dimensional open-framework structure to ensure that perchlorate ion accommodated in the cavity can be selectively in anion exchange reaction with acetate ion. The coordination polymer has the advantages that the limitation of a conventional anion exchange material is overcome and the exchange process is simple and very easy to carry out and is expected to be used in practical applications 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, in particular to the preparation of a Cd(II) coordination polymer with a three-dimensional open framework structure, more specifically 3,5- Preparation of bis(2-pyridyl)-4-(4-pyridyl)-1,2,4-triazole-cadmium(II)perchlorate and its application in selective ion exchange. Background technique In recent years, the research on coordination polymers has become one of the hotspots in the fields of chemistry and materials science (R.-Q. Zou, A. I. Abdel-Fattah, H.-W. Xu, Y.-S. Zhao, D. D. Hickmott, CrystEngComm 2010, 12, 1337–1353; G. Férey, C. Serre, Chem. Soc. Rev. 2009, 38, 1380). Many scientists at home and abroad have made a lot of significant achievements in the structural design and material properties of coordination polymers. At present, the research trend of coordination polymers is mainly reflected in the design of synthesis st...

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Problems solved by technology

However, currently known coordination polymers with anion exchange properties often exhibit certain limitations (R. Custelcean, B.A. Moyer, Eur. J. Inorg. Chem. 2007, 1321–1340)

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