1. Institut
für Technische Chemie, Leibniz Universität Hannover, Callinstrasse
3, D-30167 Hannover, Germany
2. Laboratorium
für Nano- und Quantenengineering, Gottfried Wilhelm Leibniz Universität Hannover, Schneiderberg 39, 30167 Hannover, Germany
3. Laboratory
of Photoactive Nanocomposite Materials, Department of Photonics, Faculty
of Physics, Saint-Petersburg State University, Ulianovskaia str. 3, Peterhof, Saint-Petersburg 198504, Russia