Abstract
Lyophobized silicas containing relatively small numbers of grafted perfluorohexyl (1.1 nm−2) and perfluorobutyl (1.7 nm−2) groups are studied by means of gas chromatography, adsorption under static conditions, and IR spectroscopy. The results are compared to those obtained by us previously for a series of samples with dense polyfluoroalkyl monolayers (≥2.0 nm−2). Effects related to the influence of the grafting density and the size of fluorine-containing groups on the adsorption of polar compounds and the hydrophobicity of the surface are discussed.
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Original Russian Text © T.M. Roshchina, N.K. Shoniya, O.Ya. Tayakina, O.P. Tkachenko, L.M. Kustov, 2013, published in Zhurnal Fizicheskoi Khimii, 2013, Vol. 87, No. 8, pp. 1371–1378.
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Roshchina, T.M., Shoniya, N.K., Tayakina, O.Y. et al. Effect of the surface condition of silicas with grafted monofunctional polyfluoroalkylsilanes on the adsorption of polar molecules. Russ. J. Phys. Chem. 87, 1367–1373 (2013). https://doi.org/10.1134/S0036024413080190
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DOI: https://doi.org/10.1134/S0036024413080190