Articles
  • Synthesis of inorganic-organic composite phosphors with lanthanide complexes embedded in fibrous clays
  • Sumio Kaizakia,*, Dai Shirotania, ,Keiko Toyaa, Masako Iwamatsua, Yumiko Katoa, Mikiko Makia, Takanori Hiramib, Hiroshi Sekib, Hiroyasu Nakatab and Hisako Satoc
  • a Office for University-Industry Collaboration, Osaka University, 2-1 Yamadaoka, Sutia, Osaka 565-0871 Japan b Department of Arts and Science, Osaka Kyouiku University, 4-698-1 Asahigaoka, Kashiwara, Osaka, 582-8582, Japan c Graduate School of Science and Engineering, Ehime University, 2-5 Bunkyou-cho, Matsuyama, Ehime 791-0295 Japan
Abstract
This paper concerns with the synthesis and the luminescence spectra of lanthanide complexes of Eu(III) and/or Eu(II) or Tb(III) ions which are embedded into fibrous palygorskite and sepiolite clays in which the magnesium ion are ion exchanged with lanthanide ions. The He-Cd laser excitation photoluminescence of the present complexes without organic ligands exhibit the deferration effects. The phosphors with light harvesting ligands such as benzophenone derivatives and 1,10-phenanthroline give the fairly strong visible luminescence by UV-A light excitation with a LED black light in a light room under fluorescent lamps. Further, the temperature dependent phosphors with benzophenone derivatives exhibit the stronger luminescence with increasing the temperature over 100 oC.

Keywords: Eu(III), Eu(II), Tb(III) complexes, Inorganic-organic composite, Fibrous clays, Luminescence spectra.

This Article

  • 2016; 17(5): 464-467

    Published on May 31, 2016

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