TY - JOUR
T1 - Gels from a semifluorinated n-alkane in fluorinated solvents as a probe for intermolecular interactions
AU - Tattini, Lorenzo
AU - Lo Nostro, Pierandrea
AU - Scalise, Luca
AU - Ninham, Barry W.
AU - Baglioni, Piero
PY - 2009/11/1
Y1 - 2009/11/1
N2 - 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.
AB - 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.
KW - Fluorinated solvent(s)
KW - Fluorocarbon(s)
KW - Interaction(s)
KW - Perfluoroalkyl-alkane(s)
KW - Self-assembly
KW - Semifluorinated alkane(s)
UR - http://www.scopus.com/inward/record.url?scp=69249242937&partnerID=8YFLogxK
U2 - 10.1016/j.jcis.2009.07.037
DO - 10.1016/j.jcis.2009.07.037
M3 - Article
SN - 0021-9797
VL - 339
SP - 259
EP - 265
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
IS - 1
ER -