Substituted Heteropoly Acid - Synthesis, Characterization And Electrical Properties Of The Organic Hybrid Materials

Four kinds of ternary heteropoly acid-organic hybrid materials were prepared. (1) The tungstovanadogermanic heteropoly acid H₅GeW₁1VO₄₀ (GeW₁₁V) composite with polyethylene glycol (PEG): GeW₁₁V/PEG hybrid material;(2) H₅GeW₁₁VO_40- composite with polyvinylpyrrolidone (GeW₁₁V/PVP) hybrid material;(3) The undecatungstochromoindic heteropoly acid H₆[CrW₁₁O₃₉In(H₂O)] (InCrW₁₁) composite with polyethylene glycol (PEG): InCrW₁₁/PEG hybrid material;(4) InCrW₁₁/PVP hybrid material. The optimal proportion of the component compounds and the pH of the synthesis reaction are given. The products were characterized by means of IR and XRD. Their proton conductivities were determined at room temperature. According to the experimental results, we proposed a possible mechanism of the proton conduction of the hybrid materials.