1. Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece
2. School of Chemistry, College of Science and Engineering, National University of Ireland, H91 TK33 Galway, Ireland
3. Department of Physics, University of Ioannina, 45110 Ioannina, Greece
4. Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
5. Institute of Materials Science and Computing, University Research Center of Ioannina (URCI) Ioannina, 45110 Ioannina, Greece