The synthesis of polyoxometalate-based metal-organic frameworks under ionothermal conditions

Abstract

Using ionic liquid (IL) [Bmim]Br (Bmim=1-butyl-3-methylimidazolium) as solvent has resulted in a polyoxometalate-based metal-organic framework (PMOFs), [Cu^IBbi]₄SiW₁₂O₄₀·H₂O (1) [Bbi=1,1-(1,4-butanediyl)-bis(imidazole)], and was produced via an ionothermal route. Its structure was determined by single-crystal X-ray diffraction. Compound 1 is a 1-D ladder with large voids, resulting in a 3-D supermolecular structure using the classic Keggin-type anion as a second building block. This means utilizing ILs to construct 3-D PMOFs can be efficiently realized. Additionally, electrochemical, electrocatalytic, and photocatalytic properties of 1 were studied.

Keywords:

• Ionothermal
• Polyoxometalate-based frameworks
• Topology
• Electrochemistry
• Electrocatalysis
• Photocatalysis

Supplementary material

IR spectrum and X-ray crystallographic information file (CIF) are available for 1. Further crystallographic data have been deposited with the Cambridge Crystallography Data Center (CCDC) as deposition number CCDC 784715 for 1. The data can be obtained free of charge from the CCDC, 12 Union Road, Cambridge CB2 1EZ, UK, via Fax: [phone]) or E-mail: ([email protected]).

Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (51203082) and Guangxi Natural Science Foundation (0832280).