A method was developed for the synthesis of ion-coordinated polysilsesquioxanes (OSS-M) by reaction of amphiphilic carboxyl-containing oligosilsesquioxanes (OSS-COOH) with Co and Ni acetates. The OSS-M contain two types of crystalline phases, one of which is formed as a result of interaction of the alkyl chains while the other results from the formation of hydrogen bonds and coordination bonds. The size of the clusters formed by the metal ions, estimated from measurements of their magnetic moments, amounts to 2-3 nm. The magnetic nanoclusters formed by the Co ions in thin polymer films are anisotropic with respect to the plane of the substrate while the Ni ions are isotropic.
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The work was carried out as part of a target program of scientific researches of the National Academy of Sciences of Ukraine “New functional substances and materials of chemical production” (project No. 16-19).
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Translated from Teoreticheskaya i Éksperimental’naya Khimiya, Vol. 55, No. 2, pp. 112-118, March-April, 2019.
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Shevchenko, V.V., Gumenna, M.A., Bliznyuk, V.N. et al. Polysilsesquioxanes Containing Superparamagnetic Nanoclusters of Cobalt or Nickel. Theor Exp Chem 55, 125–131 (2019). https://doi.org/10.1007/s11237-019-09603-8
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DOI: https://doi.org/10.1007/s11237-019-09603-8