1. Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE)
2. University of Duisburg-Essen
3. 45117 Essen
4. Germany
5. Department of Chemistry and Food Chemistry
6. TU Dresden
7. 01069 Dresden
8. Ernst Ruska-Center and Peter Grünberg Institute
9. Forschungszentrum Jülich GmbH
10. 52425 Jülich