Summary.
A hybrid silicon precursor (ICS-PPG) obtained by reaction of 3-isocyanatopropyltriethoxy silane with poly-(propyleneglycol)-bis-(2-aminopropyl ether) was recognized as a potential host for various salts and molecular species. It has been used for electrochromic, gasochromic, photovoltaic, and fuel cell applications. This focuses on proton conducting gels (PWA/ICS-PPG, SiWA/ICS-PPG, and W-PTA/ICS-PPG) obtained after the incorporation of polyoxometalates in the ICS-PPG host. IR spectroscopic measurements are used to reveal the entrapment, the aggregation, and the interactions of W-PTA, PWA, or SiWA with the sol-gel derived network. The proton conductivity of the composites, measured using impedance spectroscopy, increases with increasing concentration of the polyoxometalates from 10−6 to 10−3 S/cm.
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Received June 23, 2000. Accepted (revised) September 18, 2000
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Štangar, U., Orel, B., Grošelj, N. et al. Organic-Inorganic Sol-Gel Hybrids with Ionic Properties. Monatshefte fuer Chemie 132, 103–112 (2001). https://doi.org/10.1007/s007060170149
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DOI: https://doi.org/10.1007/s007060170149