1. Laboratory of Organic ChemistryETH Zurich Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
2. Laboratory of Photonics and Interfaces, Station 6, EPF Lausanne CH-1015 Switzerland
3. Slovak University of Technology in Bratislava, Faculty of Chemical and Food TechnologyInstitute of Physical Chemistry and Chemical Physics, Radlinského 9 812 37 Bratislava Slovak Republic
4. Department of Physics and Center for Nanoscience (CeNS)Ludwig-Maximilians-Universität (LMU) Amalienstaße 54 80799 Munich Germany
5. Nanosystems Initiative Munich (NIM) Schellingstraße 4 80799 Munich Germany
6. Department of Materials Science and MetallurgyUniversity of Cambridge 27 Charles Babbage Rd CB3 0FS Cambridge UK
7. Supramolecular Nano-Materials LaboratoryInstitute of Material Science and Engineering, Station 12, MXG, EPF Lausanne CH-1015 Switzerland
8. Université de Strasbourg, Laboratoire d'Électrochimie et de Chimie Physique du Corps SolideInstitut de Chimie de Strasbourg 4 rue Blaise Pascal, CS 90032 67081 Strasbourg France