1. Department of Chemistry and Center for NanoScience (CeNS); Ludwig-Maximilians-Universität München (LMU Munich); Butenandtstrasse 5-13 (E) 81377 Munich Germany
2. Department of Chemistry and Biochemistry; University of South Carolina; Columbia SC 29208 USA
3. Department of Biology; Ludwig-Maximilians-Universität München (LMU Munich); Großhaderner Str. 2-4 82152 Planegg-Martinsried Germany
4. J. Heyrovský Institute of Physical Chemistry; v.v.i.; Academy of Sciences of the Czech Republic; Dolejskova 3 18223 Prague 8 Czech Republic
5. Uni. Bordeaux; ISM CNRS UMR 5255; Bordeaux INP; ENSCBP; 16, Avenue Pey-Berland 33607 Pessac France