1. Center for Education and Research on Macromolecules (CERM), Department of Chemistry, University of Liege, Bldg B6a, Sart-Tilman, 4000 Liege, Belgium
2. Polymer Reaction Design Group, Institute for Materials Research (imo-imomec), Universiteit Hasselt, Agoralaan Building D, B-3590 Diepenbeek, Belgium