1. DWI−Leibniz-Institute for Interactive Materials, Forckenbeckstrasse 50, D-52056 Aachen, Germany
2. Institute
of Organic Chemistry III, University of Ulm, Albert-Einstein-Allee
11, D-89081 Ulm, Germany
3. Enikolopov
Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, 70 ul. Profsoyuznaya, 117393 Moscow, Russian Federation, and Chemistry Department, Moscow State University, Leninskie Gory 1-3, Moscow, 119991, Russia
4. JCNS-2
and PGI-4, Forschungszentrum Jülich GmbH D-52425 Jülich, Germany
5. Physik-Department, Technische Universität München, Lehrstuhl für Funktionelle
Materialien, James-Franck-Strasse
1, D-85478 Garching, Germany