Gels from a semifluorinated n-alkane in fluorinated solvents as a probe for intermolecular interactions

Lorenzo Tattini, Pierandrea Lo Nostro*, Luca Scalise, Barry W. Ninham, Piero Baglioni

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    Diblock semifluorinated n-alkanes can form aggregates and gels in fluorinated solvents. We have investigated the thermal behavior of binary mixtures comprising F(CF2)8(CH2)16H and fluorinated solvents. The solvents were perfluorohexane, perfluoroheptane, perfluorooctane, perfluorooctyl bromide, perfluorodecalin, and perfluorotributylamine. The phase diagrams were used to calculate the activity coefficients of the two components and the main excess thermodynamic functions. The solubility and self-assembly behavior of F8H16 in the fluorinated solvents are related to the different solute-solvent dispersion interactions that depend on the polarizabilities and ionization potentials of the interacting species, and on the structural properties of the solvent.

    Original languageEnglish
    Pages (from-to)259-265
    Number of pages7
    JournalJournal of Colloid and Interface Science
    Volume339
    Issue number1
    DOIs
    Publication statusPublished - 1 Nov 2009

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