Organized Nanostructured Complexes of Polyoxometalates and Surfactants that Exhibit Photoluminescence and Electrochromism

Authors

  • Tierui Zhang,

    1. Max Plank Institute of Colloids and Interfaces Research Campus Golm D-14424 Potsdam-Golm (Germany)
    2. Department of Chemistry University of California, Riverside CA 92521 (USA)
    Search for more papers by this author
  • Shaoqin Liu,

    1. Max Plank Institute of Colloids and Interfaces Research Campus Golm D-14424 Potsdam-Golm (Germany)
    2. Nanomedicine and Biosensor Lab Bio-X Center, Harbin Institute of Technology Harbin 150001 (P.R. China)
    Search for more papers by this author
  • Dirk G. Kurth,

    Corresponding author
    1. Max Plank Institute of Colloids and Interfaces Research Campus Golm D-14424 Potsdam-Golm (Germany)
    2. National Institute for Materials Science (NIMS) 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
    3. New address: Technologie der Materialsynthese,Universität Würzburg, Röntgenring 11, 97070 Würzburg (Germany)
    • Max Plank Institute of Colloids and Interfaces Research Campus Golm D-14424 Potsdam-Golm (Germany).
    Search for more papers by this author
  • Charl F. J. Faul

    Corresponding author
    1. Inorganic and Materials Chemistry School of Chemistry, University of Bristol Bristol BS8 1TS (UK)
    • Inorganic and Materials Chemistry School of Chemistry, University of Bristol Bristol BS8 1TS (UK).
    Search for more papers by this author

Abstract

A variety of functional nanostructured organic/inorganic hybrid materials from the europium-exchanged derivative of a Preyssler-type polyoxometalate (POM), [EuP5W30O110]12−, and functional organic surfactants were prepared by the ionic self-assembly (ISA) route. The effect of organic surfactants on the structure, photoluminescent, electrochemical and electrochromic properties of the POM anions was investigated in detail. All obtained hybrid materials are amphotropic, i.e., exhibit both thermotropic and lyotropic liquid-crystalline phase behaviour. Investigations of their photophysical properties have shown that the interactions of the various surfactants with the polyanions influence the coordination environments and site symmetry of Eu3+ in different ways. The functional groups in the organic surfactants significantly influence the electrochromic properties and photoluminescence of POMs. Different from normal and pyridine-containing complexes, no photoluminescence and no electrochromism were observed from the ferrocene-containing complexes. This may be explained in view of charge transfer between the POM anion and the ferrocenyl group.

Ancillary