1. Institute for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology (KIT), Engesser Str. 18, D-73131 Karlsruhe, Germany
2. Soft Matter Synthesis Laboratory (SML), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
3. Department of Otorhinolaryngology, Head and Neck Surgery, Medical Faculty Mannheim of University Heidelberg, Theodor-Kutzer-Ufer 1-3, D-68167 Mannheim, Germany
4. CNRS, Bordeaux INP, LCPO, UMR 5629, University of Bordeaux, F-33600 Pessac, France
5. Institut de Science des Matériaux de Mulhouse (IS2M), UMR 7361 CNRS/Université de Haute Alsace (UHA), 15 rue Jean Starcky, 68057 Mulhouse Cedex, France