Affiliation: | 1. National Center for Scientific Research “Demokritos”, 15341 Ag. Paraskevi Attikis, Greece;2. Department of Chemistry, University of Crete, P.O. Box 1470, 71409 Heraklion, Crete, Greece;3. Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Postfach 3640, 76021 Karlsruhe, Germany |