1. Laboratoire de Chimie des Polymères Organiques (LCPO), CNRS, University of Bordeaux, Bordeaux INP, F-33607 Pessac Cedex, France
2. Swiss Federal Laboratories for Materials Science and Technology (Empa), St. Gallen, CH-9014, Switzerland
3. University of Bordeaux, ICMCB, UPR 9048, F-33600 Pessac, France