small angle neutron scattering (SANS); gel; micelle
Abstract :
[en] A small-angle neutron scattering investigation of metallo-supramolecular micellar gels built from polystyrene-block-poly(tert-butylacrylate) PS-b-PtBA-tpy (-tpy: terpyridine) block copolymers and transition metal ions is presented. The influence of the copolymer concentration on the structure and spatial organization of the micelles, as well as the impact of the subsequent addition of metal ions (Fe(II), Ni(II), and Zn(II)) on these characteristics is extensively studied. The experimental scattering cross-sections are fitted with an analytical formula based on the Percus–Yevick hard-sphere model and on the Pedersen–Gerstenberg model for the structure and the form factor, respectively. The resulting structural information is correlated with previously performed light scattering and rheology experiments.
Research Center/Unit :
Molecular Dynamics Laboratory
Disciplines :
Materials science & engineering Chemistry
Author, co-author :
Mugemana, Clément; Université catholique de Louvain (UCL), Institute of Condensed Matter and Nanosciences, Bio and Soft Matter
Joset, Arnaud ; University of Liège (ULg), Department of Chemistry, Molecular Dynamics Laboratory
Guillet, Pierre; Université d’Avignon et des Pays de Vaucluse, Chimie Bioorganique et Systèmes Amphiphiles, France
Appavou, Marie Sousai; Forschungszentrum Jülich GmbH, Centre for Neutron Science, Garching, Germany
De Souza, Nicolas; Bragg Institute, Australian Nuclear Science and Technology, Kirrawee , Australia
Fustin, Charles-André; Université catholique de Louvain (UCL), Institute of Condensed Matter and Nanosciences, Bio and Soft Matter
Leyh, Bernard ; University of Liège (ULg), Department of Chemistry, Molecular Dynamics Laboratory
Gohy, Jean-François; Université catholique de Louvain (UCL), Institute of Condensed Matter and Nanosciences, Bio and Soft Matter
Language :
English
Title :
Structure of metallo-supramolecular micellar gels
Publication date :
12 August 2013
Journal title :
Macromolecular Chemistry and Physics
ISSN :
1022-1352
eISSN :
1521-3935
Publisher :
Wiley-VCH, Weinheim, Germany
Volume :
214
Issue :
15
Pages :
1699-1709
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
The Communauté française de Belgique in the frame of the the frame of the ARC 08/13-010 SUPRATUNE project F.R.S.-FNRS - Fonds de la Recherche Scientifique BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique the NMI3 network by y the European Commission.
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