1. Institute of Applied Physics (APH), Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, Germany
2. Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany
3. Institute for Molecular Systems Engineering and Advanced Materials, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 225, 69120 Heidelberg, Germany
4. Institute of Organic Chemistry (OCI), Ruprecht-Karls-Universität Heidelberg, , 69120 Heidelberg, Germany
5. Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), , 76133 Karlsruhe, Germany
6. Institute of Biological and Chemical Systems-Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany
7. Centre for Materials Science, School of Chemistry and Physics, Queensland University of Technology (QUT), Brisbane, Queensland 4000, Australia