title: Supramolecular organization of protonated aminosilicones in water.
abstract: This study deals with the ionically-driven self-assembly of oligomeric aminosilicones, judiciously protonated with a variety of organic acids. Depending on the length of the silicone and the strength of the associated acids, (inverse) water-in-silicone emulsions, small nanoparticles, or catanionic vesicles were prepared and characterized by conventional (TEM) or original (DIC optical microscopy, DOSY NMR) techniques. For chains longer than about 40 units, a specific PEG-based sulfonic acid was synthesized and used to generate a supramolecular block-like copolymer and ensure fast and efficient emulsification. In all instances, a simple impulse such as pH increase triggered phase separation of the colloidal objects.
authors.affiliation: Laboratoire de Chimie des Polymères, UMR7610 CNRS/Université Pierre et Marie Curie, 3 rue Galilée, 94200 Ivry, France.
authors.forename: Hugo
authors.initials: H
authors.lastname: Petitjean
authors.forename: Pierre
authors.initials: P
authors.lastname: Guiglion
authors.forename: Martin
authors.initials: M
authors.lastname: In
authors.forename: Janice R
authors.initials: JR
authors.lastname: Aldrich-Wright
authors.forename: Patrice
authors.initials: P
authors.lastname: Castignolles
authors.forename: François
authors.initials: F
authors.lastname: Ganachaud
authors.forename: Marianne
authors.initials: M
authors.lastname: Gaborieau
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D046529:Microscopy, Electron, Transmission; D011522:Protons; D012828:Silicones / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: D011522:Protons; D012828:Silicones; D014867:Water
keywords: Aminosilicone; Colloids; Inverse emulsions; Ionic pairs; Nanoparticles; Reversible association; Self-assembly