A method of synthesis of oligomeric siloxane protic ionic liquids capable of condensation reactions has been developed as starting compounds in the obtaining proton exchange membranes for fuel cells. Their organic frame is characterized by a combination of amine centers of different basicity (aliphatic and imidazole types) neutralized with ethanesulfonic acid and secondary hydroxyl groups. A change in the degree of neutralization of the amine centers significantly affects the structure of the compounds and the mechanism of proton migration. The conductivity of the obtained compounds reaches 9.8·10–4 S/cm at 100°C in the absence of moisture.
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The work was performed with the financial support of the target program of fundamental research of the National Academy of Sciences of Ukraine “New functional substances and materials for chemical production” (project 5-21).
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Translated from Teoretychna ta Eksperymentalna Khimiya, Vol. 58, No. 2, pp. 126-132, March-April, 2022.
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Shevchenko, V.V., Gumenna, M.A., Klimenko, N.S. et al. Protic Oligosilsesquioxane Dicationic Ionic Liquids with Two Types of Ionic Sites in Organic Frame. Theor Exp Chem 58, 143–149 (2022). https://doi.org/10.1007/s11237-022-09732-7
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DOI: https://doi.org/10.1007/s11237-022-09732-7