Synthesis of Polyaniline Doped Materials of Salts of Divalent Chromium or Manganese Substituted Isomers of Heteropoly Silicotungstic Acid and Characterization of Their Thermal Stability and Fluorescence Properties

α and βi (βi=β1,β2 and β3)isomers of divalent metal Mn(Ⅱ) or Cr(Ⅱ) substituted heteropoly silicotungstic acid 4K2O·SiO2·W11CrO3 or 4K2O·SiO2·W11MnO3 were prepared and doped with polyaniline under solid phase at room temperature in the absence of acid.Structures of the polyaniline doped materials and their thermal stability and fluorescence properties were characterized by IR-spectrometry,UV-VIS spectrophotometry,X-ray diffraction,differential thermogravimetry,and molecular fluorophotometry.