Hydrogen-bonded assemblies of a new polyoxometalate-based 3-D supramolecular architecture

Abstract

A new hydrogen-bonded 3-D supramolecular architecture [Ni(2,2′-bpy)₃]_1.5[AsW^VI ₁₀W^V ₂O₄₀Ni(2,2′-bpy)₂(H₂O)]·0.5H₂O (2,2′-bpy = 2,2′-bipyridine) (1) has been hydrothermally synthesized and characterized by single-crystal X-ray diffraction analysis, PXRD, elemental analysis, XPS, and IR spectrum. Compound 1 exhibits photocatalytic activity for methylene blue degradation under visible-light irradiation and shows good stability toward visible-light photocatalysis. Luminescence of 1 is also reported.

Keywords:

• Crystal structure
• Hydrogen-bonded
• Supramolecular network
• Photocatalytic activity
• Fluorescence

Acknowledgements

The work is supported by the National Natural Science Foundation (No. 51108122), Open Project of State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (No. QA201025), The Fundamental Research Funds for the Central Universities (Grant No. HIT. NSRIF. 2010053) and Science and Technology Innovation Talents Special Foundation of Harbin (2010RFQXG035 and 2007RFXXG018).