1. Department of Chemistry, Universität Hamburg, Bundesstrasse 45, 20146 Hamburg, Germany
2. Department of Microbiology and Biotechnology, Universität Hamburg, Ohnhorststrasse 18, 22609 Hamburg, Germany
3. Helmholtz-Zentrum Hereon GmbH, Institute of Surface Science, Max-Planck-Strasse 1, 21502 Geesthacht, Germany
4. Justus-Liebig-Universität Gießen, Institute of Physical Chemistry, Heinrich-Buff-Ring 17, 35392 Giessen, Germany