Synthesis of inorganic-organic composite phosphors with lanthanide complexes embedded in fibrous clays
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This paper concerns with the synthesis and the luminescence spectra of lanthanide complexes of Eu(III) and/or Eu(II) orTb(III) ions which are embedded into fibrous palygorskite and sepiolite clays in which the magnesium ion are ion exchangedwith lanthanide ions. The He-Cd laser excitation photoluminescence of the present complexes without organic ligands exhibitthe deferration effects. The phosphors with light harvesting ligands such as benzophenone derivatives and 1,10-phenanthrolinegive the fairly strong visible luminescence by UV-A light excitation with a LED black light in a light room under fluorescentlamps. Further, the temperature dependent phosphors with benzophenone derivatives exhibit the stronger luminescence withincreasing the temperature over 100 oC.
Abstract
This paper concerns with the synthesis and the luminescence spectra of lanthanide complexes of Eu(III) and/or Eu(II) orTb(III) ions which are embedded into fibrous palygorskite and sepiolite clays in which the magnesium ion are ion exchangedwith lanthanide ions. The He-Cd laser excitation photoluminescence of the present complexes without organic ligands exhibitthe deferration effects. The phosphors with light harvesting ligands such as benzophenone derivatives and 1,10-phenanthrolinegive the fairly strong visible luminescence by UV-A light excitation with a LED black light in a light room under fluorescentlamps. Further, the temperature dependent phosphors with benzophenone derivatives exhibit the stronger luminescence withincreasing the temperature over 100 oC.
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