1. Institute of Organic Chemistry III/Macromolecular Chemistry, University of Ulm, Albert‐Einstein‐Allee 11, 89081 Ulm (Germany), Fax: (+49) 731‐50‐22883
2. Institute of Surface Chemistry and Catalysis, University of Ulm, Albert‐Einstein‐Allee 47, 89081 Ulm (Germany)
3. Max‐Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz (Germany)