1. Molecular Materials, Department of Applied Physics; Aalto University (previously Helsinki University of Technology); P.O. Box 15100, FIN-00076 Espoo Finland
2. Melville Laboratory for Polymer Synthesis, Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB21EW UK
3. Department of Forest Products Technology; Aalto University; P.O. Box 16300, FIN-00076 Aalto, Espoo Finland