1. School of Biology and Chemistry and Center of Cellular Nanoanalytics, Universität Osnabrück, Barbarastraße 7, D-49076 Osnabrück, Germany
2. Polymer Chemistry, Saarland University, Campus C4 2, 66123 Saarbrücken, Germany
3. Department of Physics, Universität Osnabrück, Barbarastraße 7, D-49076 Osnabrück, Germany
4. Saarland Center for Energy Materials and Sustainability, Campus C4 2, D-66123 Saarbrücken, Germany