1. Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
2. Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
3. Chair of Macromolecular Chemistry, Julius-Maximilians-Universität Würzburg, Röntgenring 11, 97070 Würzburg, Germany