Stepwise aggregation of dimethyl-di-n-octylammonium chloride in aqueous solutions: from dimers to vesicles.
The self-aggregation of dimethyl-di-n-octylammonium chloride, in diluted aqueous solutions, was studied with various experimental and theoretical techniques: zetametry, conductimetry, dimethyl-di-n-octylammonium and chloride-selective electrodes, tensiometry, NMR spectroscopy ((1)H and DOSY), and molecular modeling (PM3 and molecular dynamic). The combination of the data obtained by these techniques led us to propose a stepwise aggregation process with increasing concentration: dimers (0.2-10 mM), bilayers (10-30 mM), and finally vesicles (>30 mM).
Université Lille 1, LCOM, Equipe Oxydation et Physico-Chimie de la Formulation, CNRS UMR 8009, F-59655 Villeneuve d'Ascq Cedex, France.
Loïc
L
Leclercq
Véronique
V
Nardello-Rataj
Mireille
M
Turmine
Nathalie
N
Azaroual
Jean-Marie
JM
Aubry