Confinement of tert-Butanol Nanoclusters in Hydrophilic and Hydrophobic Silica Nanopores

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• 作者：Aziz Ghoufi ; Ivanne Hureau ; Denis Morineau ; Richard Renou ; Anthony Szymczyk
• 刊名：The Journal of Physical Chemistry C
• 出版年：2013
• 出版时间：July 25, 2013
• 年：2013
• 卷：117
• 期：29
• 页码：15203-15212
• 全文大小：632K
• 年卷期：v.117,no.29(July 25, 2013)
• ISSN：1932-7455

文摘

From hydrogen bonds, tert-butanol molecules self-organize in micelle-like supermolecular clusters in the liquid state. While these nanoclusters have been largely investigated in the bulk phase, the confined situation remains seldom. However, from a relevant combination of neutron scattering and molecular simulation, it has been shown that these clusters persisted under hydrophilic cylindrical confinement [Ghoufi, A.; Hureau, I.; Lefort, R.; Morineau, D. J. Phys. Chem. C, 2011, 115, 17761]. In this work, we provide a structural, dynamic, and dielectric characterization of nanoconfined tert-butanol in both hydrophilic and hydrophobic silica nanopores. Differences between hydrophilic and hydrophobic pores with respect to the bulk phase are correlated to the modulation in the hydrogen-bonding network induced by the nanometric confinement and the chemical nature of the solid surface.