1. Department of Chemistry, University of Ioannina, P.O. Box 1186, Ioannina GR-45110, Greece
2. Institute of Materials Science and Computing, University Research Center of Ioannina (URCI), Ioannina 45110, Greece
3. School of Engineering and Materials Science, Queen Mary University, 2.06, Joseph Priestley, Mile End, London E1 4NS, United Kingdom
4. Department of Physics, National Technical University of Athens, Zografou Campus, Athens 15780, Greece
5. Department of Chemistry, Laboratory of Polymer Chemistry and Technology, Aristotle University of Thessaloniki, Thessaloniki GR-541 24, Greece
6. Department of Food Science and Technology, International Hellenic University, P.O. Box 141, Thessaloniki GR-57400, Greece