1. Department of Condensed Matter, National Institute for Research and Development in Electrochemistry and Condensed Matter, Timisoara, 300224, Romania
2. Department of Physics, West University of Timisoara, Timisoara 300223, Romania
3. Department of Chemistry and Biochemistry, School of Medicine, University of Zagreb, Zagreb 10000, Croatia
4. Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
5. Institute for Research, Development and Innovation in Natural and Technical Sciences, Aurel Vlaicu University of Arad, Arad 310330, Romania