1. Department of Chemistry University of Ioannina Ioannina 45110 Greece
2. Institute of Chemical Engineering Sciences Foundation of Research and Technology Hellas Rio Patras 26504 Greece
3. Department of Physics University of Patras Patras 26504 Greece
4. University Research Center of Ioannina (URCI) Institute of Environment and Sustainable Development Ioannina 45110 Greece
5. University Research Center of Ioannina (URCI) Institute of Materials Science and Computing Ioannina 45110 Greece