1. REQUIMTE, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal; FORTH-Institute of Electronic Structure and Laser, P.O. Box 1527, 71110 Heraklion, Crete, Greece; Department of Materials Science and Technology, University of Crete, P.O. Box 2208, 710 03 Heraklion, Crete, Greece; Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vass. Constantinou Ave., 11635 Athens, Greece; and Department of Chemistry, University of Athens,...