1. Institut de Science des Matériaux de Mulhouse IS2M - LRC CNRS 7228 - ENSC Mu-UHA; 15, Rue Jean Starcky 68057 Mulhouse Cedex France
2. Chemistry Department; University of Liege (ULg), Center for Education and Research on Macromolecules (CERM); Sart-Tilman B6A 4000 Liège Belgium
3. Formerly, ENSCMu-UHA; 3 Rue Alfred Werner 68093 Mulhouse Cedex France