1. Empa, Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
2. Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
3. Chair of Molecular Functional Materials, Department of Chemistry
and Food Chemistry, Technische Universität Dresden, Mommsenstrasse
4, D-01062 Dresden, Germany
4. Department of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
5. Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland