1. Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich-Schiller-University Jena, Humboldtstrasse 10, Jena D-07743, Germany
2. Dutch Polymer Institute (DPI), Post Office Box 902, Eindhoven 5600 AX, The Netherlands
3. Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
4. Center for Nanoscience (CeNS), Ludwigs-Maximilians-University München, Amalienstrasse 54, München D-80799, Germany