1. Experimental Physics II, University of Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany
2. Macromolecular Chemistry, Bergische Universität Wuppertal, Gauss-Strasse 20, 42119 Wuppertal, Germany
3. Bayreuth Institute of Macromolecular Research (BIMF), University of Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany