1. Institute of Photonics and Nanotechnology Vilnius University Saulėtekis av. 3 10257 Vilnius Lithuania
2. Institut für Anorganische Chemie Goethe-Universität Frankfurt Max-von-Laue-Strasse 7 60438 Frankfurt a. Main Germany
3. EaStCHEM School of Chemistry The University of Edinburgh David Brewster Road Edinburgh EH9 3FJ UK