a
Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, 76128 Karlsruhe, Germany
E-mail: annie.powell@kit.edu
;
Fax: +49 721-608-48142
;
Tel: +49 721-608-42135
b
Institute of Chemistry of the Academy of Sciences of Moldova, Academiei str. 3, MD-2028 Chisinau, Moldova
E-mail: denis.prodius@kit.edu
;
Fax: +373 22 739722
;
Tel: +373 22 739954
c
Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany