1. Graduate School Materials Science in Mainz, Staudinger Weg 9, D-55128 Mainz, Germany
2. Institute of Organic Chemistry, Organic and Macromolecular Chemistry, Duesbergweg 10-14, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
3. Institut des Matériaux, Laboratoire des Polymères, Batiment MXD, Station 12, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland