1. Centro de Química Estrutural, Institute of Molecular Sciences and Department of Chemical Engineering, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal
2. Université de Lyon, CNRS, Université Claude Bernard Lyon 1, INSA Lyon, Université Jean Monnet, UMR 5223, Ingénierie des Matériaux Polymères, F-69621 Villeurbanne, France
3. Department of Chemistry, University of Victoria, P.O. Box 1700 Stn CSC, Victoria, British Columbia V8W 2Y2, Canada