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摘要
Transparent mesoporous TiO2 films consisting of uniform anatase particles have been deposited on glass slides by using sol-gel technique. A Europium complex Eu(TTA)(3)(bpy), where the TTA ligand is beta-diketonate thenoyltrifluoroacetonate and the bpy is 2,2-bipyridine, was formed on TiO2 surface by physical adsorption of europium ions and successive formation of stable chelate complexes with TTA and bpy ligands. In this way a well dispersion of the complex has been achieved giving significant emission intensity. The excitation of the material in the UV region (374 nm) results in the emission of a nearly monochromatic light at 613 nm ((5)Do -> F-7(2)) via energy transfer from the excited organic ligands to europium emissive state.
- 出版日期2006-1-20
