1. Institute of Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg,
Germany
2. Center for Applied Nanotechnology, Grindelallee
117, 20146 Hamburg, Germany
3. Institute of Inorganic and Applied
Chemistry, University of Hamburg, Martin-Luther-King-Platz
6, 20146 Hamburg, Germany
4. The Hamburg Center for Ultrafast
Imaging, University of Hamburg, Luruper
Chaussee 149, 22761 Hamburg, Germany