Abstract
An efficient method has been developed for the synthesis of resorcinol–formaldehyde hybrid aerogels with ferrocene subunit fragments embedded in their polymer structure. For gelation preceding the synthesis of aerogels, dioxane was used for the first time as the main reaction solvent. The gels were converted into aerogels using SC-CO2. The aerogel samples were characterized in detail by Mössbauer spectroscopy, nitrogen adsorption, and atomic absorption spectroscopy. The density of the materials was determined. The iron content in the resulting aerogels varies from 1.5 to 11 wt % (or 5.6–36.3 wt % ferrocene units). The metallocene subunits are present in aerogels in two valence-oxidation states: ferrocene and ferrocenium.
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ACKNOWLEDGMENTS
The authors express their gratitude to the LIK company for technical support of this work.
This study was performed using the equipment of the Multiaccess Center, Institute of General and Inorganic Chemistry, Russian Academy of Sciences.
Funding
The elemental analysis was financially supported by the Ministry of Science and Higher Education of the Russian Federation under the government contract (no. 075-03-2023-642). It was performed using the equipment of the Center for Molecular Composition Studies, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences.
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Panova, L.V., Lemenovskii, D.A., Afanasov, M.I. et al. Ferrocene-Modified Resorcinol–Formaldehyde Aerogels. Russ. J. Phys. Chem. B 17, 1526–1533 (2023). https://doi.org/10.1134/S1990793123070175
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DOI: https://doi.org/10.1134/S1990793123070175