1. Université de Bordeaux, Laboratoire de Chimie des Polymères Organiques, IPB-ENSCBP; F-33607 Pessac cedex France
2. Centre National de la Recherche Scientifique; Laboratoire de Chimie des Polymères Organiques; 16 avenue Pey-Berland F-33607 Pessac cedex France
3. POLYMAT Institute for Polymer Materials, University of the Basque Country UPV/EHU, Joxe Mari Korta Center; Avda. Tolosa 72 20018 Donostia-san Sebastian Spain
4. Centre for Education and Research on Macromolecules (CERM), Department of Chemistry B6; University of Liege (ULg), Sart-Tilman; B-4000 Liège Belgium