1. Institute for Macromolecular Chemistry; Hermann Staudinger Haus; University of Freiburg; Stefan-Meier-Str. 31 79104 Freiburg Germany
2. Freiburg Materials Research Center FMF; University of Freiburg; Stefan-Meier-Str. 21 79104 Freiburg Germany
3. Fischerwerke GmbH & Co. KG; Klaus-Fischer-Str. 1 72178 Waldachtal Germany