Chinese Journal of Applied Chemistry ›› 2018, Vol. 35 ›› Issue (5): 589-593.DOI: 10.11944/j.issn.1000-0518.2018.05.170263

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Synthesis, Structure Characterization and Photoluminescence Property of a New Molybdenum-Vanadium Polyoxometalate

SUN Yinghua,YANG Meiling,MEI Zemin()   

  1. Department College of Chemistry,Baicheng Normal University,Baicheng,Jilin 137000,China
  • Received:2017-08-01 Accepted:2017-10-18 Published:2018-04-23 Online:2018-04-23
  • Contact: MEI Zemin
  • Supported by:
    Supported by the Education Department of Jilin Province Science and Technology Research Projects During the 12th Five Year Plan(No.2013-389)

Abstract:

A new tetra-capped Keggin molybdenum-vanadium polyoxometalate [H3Mo8V8O40(AsO4)](en)2(4,4-bipy)7·9H2O(en:ethylenediamine, bipy:bipyridine)(1) was prepared under hydrothermal conditions,and characterized by elemental analysis,FT-IR ,X-ray photoelectron spectroscopy(XPS) and single crystal X-ray diffraction analysis. The title compound crystallized in a triclinic system,P1 space group, a=1.47395(5) nm, b=1.48172(6) nm, c=1.62881(7) nm, α=66.16(3)°, β=87.15(2)°, γ=63.42(1)°, V=2.8723(2) nm3 , Z=1, R1=0.0728, wR2=0.2014. Compound 1 is composed of a tetra-capped Keggin polyoxoanion, 4,4'-bipyridine, ethylenediamines and lattice water molecules. The rich hydrogen bonds among polyoxoanion and water molecules make the compound molecules forming three dimensional supramolecular array. The compound 1 exhibits strong fluorescent emission and may be an excellent candidate for potential photoactive materials.

Key words: polyoxometalate, supramolecular, hydrothermal synthesis, fluorescent properties