The LB films of two amphiphilic complexes, DODA/PW 9Mo 3O 40 and DODA/PW 6Mo 6O 40 , were prepared from 12 tungstomolybdophosphheteropolyacid with dimethyldioctadecylammonium and their properties and the structure wer...The LB films of two amphiphilic complexes, DODA/PW 9Mo 3O 40 and DODA/PW 6Mo 6O 40 , were prepared from 12 tungstomolybdophosphheteropolyacid with dimethyldioctadecylammonium and their properties and the structure were characterized by UV Vis absorption spectra, fluorescence spectra, low angle X ray diffraction(LAXD) and π A isotherms curves. The results showed that the molecular areas for each comlex are 0.56 nm 2, and all of them could form an idealized structure with a stability of the Langmuir Blodgetl films.展开更多
On the base of the luminescence properties of the Dy (3+) activated Ⅱ-Ⅴ group complex oxide,the luminescence properties of Ca(NbO_3)_2∶Dy (3+) and compensation effect by Na + for the Ca(NbO_3)_2∶Dy (3+) were intro...On the base of the luminescence properties of the Dy (3+) activated Ⅱ-Ⅴ group complex oxide,the luminescence properties of Ca(NbO_3)_2∶Dy (3+) and compensation effect by Na + for the Ca(NbO_3)_2∶Dy (3+) were introducted. The Dy (3+) concentrations in the phosphor powder of Ca(NbO_3)_2∶Dy (3+) and Ca(NbO_3)_2Na +∶Dy (3+) are different. The excitation spectrum,the emission spectrum and the blue-yellow ratios are obtained,and the spectrum law and the luminescence mechanism are also discussed.展开更多
文摘The LB films of two amphiphilic complexes, DODA/PW 9Mo 3O 40 and DODA/PW 6Mo 6O 40 , were prepared from 12 tungstomolybdophosphheteropolyacid with dimethyldioctadecylammonium and their properties and the structure were characterized by UV Vis absorption spectra, fluorescence spectra, low angle X ray diffraction(LAXD) and π A isotherms curves. The results showed that the molecular areas for each comlex are 0.56 nm 2, and all of them could form an idealized structure with a stability of the Langmuir Blodgetl films.
文摘On the base of the luminescence properties of the Dy (3+) activated Ⅱ-Ⅴ group complex oxide,the luminescence properties of Ca(NbO_3)_2∶Dy (3+) and compensation effect by Na + for the Ca(NbO_3)_2∶Dy (3+) were introducted. The Dy (3+) concentrations in the phosphor powder of Ca(NbO_3)_2∶Dy (3+) and Ca(NbO_3)_2Na +∶Dy (3+) are different. The excitation spectrum,the emission spectrum and the blue-yellow ratios are obtained,and the spectrum law and the luminescence mechanism are also discussed.
