1. Institute of Organic Chemistry (IOC) Karlsruhe Institute of Technology (KIT) Fritz-Haber-Weg 6 76131 Karlsruhe Germany
2. New address: Pharmazeutisches Institut Eberhard-Karls-Universität Tübingen Auf der Morgenstelle 8 72076 Tübingen
3. Institute for Nanotechnology (INT) and Karlsruhe Nano Micro Facility (KNMF) Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz Platz 1 76344 Eggenstein-Leopoldshafen
4. Department of Chemistry University of Helsinki P. O. Box 55 00014 Helsinki Finland
5. Institute of Biological and Chemical Systems – Functional Molecular Systems (IBCS-FMS) Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz Platz 1 76344 Eggenstein-Leopoldshafen