1. Deutsches Museum Museumsinsel 1 80538 Munich Germany
2. Department of Physics Technische Universität München James-Franck-Str. 1 85748 Garching Germany
3. Department of Chemistry University of Nevada Reno NV 89557-0216 USA
4. Department of Physics, Chemistry and Biology Linköping University IFM, 581 83 Linköping Sweden
5. Functional Polymers Empa Swiss Federal Laboratories for Materials Science and Technology 8600 Dübendorf Switzerland