title: One-Pot Synthesis of Double Poly(Ionic Liquid) Block Copolymers by Cobalt-Mediated Radical Polymerization-Induced Self-Assembly (CMR-PISA) in Water.
abstract: Amphiphilic double poly(ionic liquid) (PIL) block copolymers are directly prepared by cobalt-mediated radical polymerization induced self-assembly (CMR-PISA) in water of N-vinyl imidazolium monomers carrying distinct alkyl chains. The cobalt-mediated radical polymerization of N-vinyl-3-ethyl imidazolium bromide (VEtImBr) is first carried out until high conversion in water at 30 °C, using an alkyl bis(acetylacetonate)cobalt(III) adduct as initiator and controlling agent. The as-obtained hydrophilic poly(N-vinyl-3-ethyl imidazolium bromide) (PVEtImBr) is then used as a macroinitiator for the CMR-PISA of N-vinyl-3-octyl imidazolium bromide (VOcImBr). Self-assembly of the amphiphilic PVEtImBr-b-PVOcImBr block copolymer, i.e., of PIL-b-PIL-type, rapidly takes place in water, forming polymer nanoparticles consisting of a hydrophilic PVEtImBr corona and a hydrophobic PVOcImBr core. Preliminary investigation into the effect of the size of the hydrophobic block on the dimension of the nanoparticles is also described.
authors.affiliation: Center for Education and Research on Macromolecules (CERM), Chemistry Department, University of Liege (ULg), Sart-Tilman, B6a, 4000, Liege, Belgium.
authors.forename: Daniela
authors.initials: D
authors.lastname: Cordella
authors.affiliation: Center for Education and Research on Macromolecules (CERM), Chemistry Department, University of Liege (ULg), Sart-Tilman, B6a, 4000, Liege, Belgium.
authors.forename: Antoine
authors.initials: A
authors.lastname: Debuigne
authors.affiliation: Center for Education and Research on Macromolecules (CERM), Chemistry Department, University of Liege (ULg), Sart-Tilman, B6a, 4000, Liege, Belgium.
authors.forename: Christine
authors.initials: C
authors.lastname: Jérôme
authors.affiliation: F-I2 Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany.
authors.forename: Zdravko
authors.initials: Z
authors.lastname: Kochovski
authors.affiliation: Laboratoire de Chimie des Polymères Organiques (LCPO), IPB-ENSCBP, Université de Bordeaux, F-33607, Pessac Cedex, France.
authors.forename: Daniel
authors.initials: D
authors.lastname: Taton
authors.affiliation: Center for Education and Research on Macromolecules (CERM), Chemistry Department, University of Liege (ULg), Sart-Tilman, B6a, 4000, Liege, Belgium.
authors.forename: Christophe
authors.initials: C
authors.lastname: Detrembleur
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D005609:Free Radicals / Q000737:chemistry; D052578:Ionic Liquids / Q000138:chemical synthesis* / Q000737:chemistry; D015394:Molecular Structure; D058105:Polymerization; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry; D014867:Water / Q000737:chemistry*
chemical_list: D005609:Free Radicals; D052578:Ionic Liquids; D011108:Polymers; D014867:Water; D003035:Cobalt
keywords: block copolymers; cobalt-mediated radical polymerization induced self assembly; poly(ionic liquid)s; vinyl imidazolium