1. Laboratory for Functional Polymers, EMPA Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland
2. Institute of Chemical Sciences and Engineering, Ecole Polytechnique Federale de Lausanne (EPFL), Station 6, 1015 Lausanne, Switzerland
3. Institute of Materials Science and Engineering, Ecole Polytechnique Federale de Lausanne (EPFL), Station 6, 1015 Lausanne, Switzerland
4. Institute of Physics and Astronomy, University of Potsdam, Karl-Liebknecht-strasse 24/25, 14476 Potsdam, Germany
5. Departments of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland