1. Department of Chemistry, University of Crete, Heraklion 71003, Greece
2. Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
3. National Center for Scientific Research “Demokritos”, Patriarchou Grigoriou and Neapoleos 27, 15341 Athens, Greece
4. Department of Chemistry, University of Bath, Bath BA2 7AY, U.K.
5. Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 116 35 Athens, Greece
6. Department of Materials Science and Technology, University of Crete, Heraklion 71003, Greece