1. Institute of Macromolecular Chemistry, Leibniz Institute for Polymer Research Dresden, Hohe Str. 6, 01069 Dresden (Germany) Faculty of Chemistry and Food Chemistry Dresden University of Technology, Mommsenstr. 4 01062 Dresden Germany
2. Institute of Organic Chemistry and Macromolecular Chemistry Friedrich Schiller University Jena Humboldtstr. 10 07743 Jena Germany