Abstract
The developed methods using tetraethoxysilane and trifunctional silanes were applied to obtain Fe3O4 magnetic particles that contain amino groups with compositions of ≡Si(CH2)3NH2, ≡Si(CH2)3NH(CH2)2NH2, and [≡Si(CH2)3]2NH. The XRD data show that the nuclei of nanoparticles in the obtained materials preserve the structure of the primary carrier, namely, that of Fe3O4 magnetite. The thermograms show a high thermal stability of the applied surface layers, i.e., their destruction was found to start at temperature above 250°C. The DRIFT spectra indicate the formation of the silica bond framework in the surface layers of nanoparticles and also the existence of hydrogen bonds between amino groups and silanol groups with the participation of water molecules aided. All of the obtained materials exhibit magnetic properties and offer promising application in medicine.
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Original Russian Text © I.V. Mel’nik, Yu.L. Zub, B. Alonso, N.V. Abramov, P.P. Gorbik, 2011, published in Fizika i Khimiya Stekla.
Published from the Proceedings of the First All-Russian Conference “Sol-Gel Synthesis and Study of Inorganic Compounds, Hybrid Functional Materials, and Disperse Systems,” St. Petersburg, Russia, November 22–24, 2010.
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Mel’nik, I.V., Zub, Y.L., Alonso, B. et al. Creation of a functional polysiloxane layer on the surface of magnetic nanoparticles using the sol-gel method. Glass Phys Chem 38, 96–104 (2012). https://doi.org/10.1134/S1087659611060113
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DOI: https://doi.org/10.1134/S1087659611060113