title: Stacking of self-assembled surface micelles in ultrathin films.
abstract: Nonpolar fluorophilic/lipophilic tetrablock amphiphiles are investigated on the surface of water and on solid substrates using compression isotherms, Brewster angle microscopy, and atomic force microscopy. At low pressures, the tetrablocks form monolayers of closely packed surface hemimicelles. Further compression causes a 2D/3D transition. At the end of the plateau, half of the deposited material is expelled forming a second monolayer on top of the initially formed monolayer. Both layers of the films consist of surface micelles, thus providing the first example of spontaneous or compression-driven stacking of self-assembled nano-objects.
authors.affiliation: Systèmes Organisés Fluorés à Finalités Thérapeutiques (SOFFT), Université de Strasbourg, Institut Charles Sadron (CNRS), Strasbourg, France.
authors.forename: Caroline
authors.initials: C
authors.lastname: de Gracia Lux
authors.forename: Jean-Louis
authors.initials: JL
authors.lastname: Gallani
authors.forename: Gilles
authors.initials: G
authors.lastname: Waton
authors.forename: Marie Pierre
authors.initials: MP
authors.lastname: Krafft
mesh_terms: D002117:Calcitriol / Q000031:analogs & derivatives / Q000737:chemistry; D005461:Fluorine / Q000737:chemistry; D008823:Micelles; D013499:Surface Properties; D013501:Surface-Active Agents / Q000737:chemistry; D013696:Temperature
chemical_list: C411462:1,25-dihydroxy-21-(3-hydroxy-3-methylbutyl)vitamin D(3); D008823:Micelles; D013501:Surface-Active Agents; D005461:Fluorine; D002117:Calcitriol