1. Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, P.O. Box 49, H-1525 Budapest, Hungary
2. Doctoral School on Materials Sciences and Technologies, Óbuda University, Bécsi út 96/b, H-1034 Budapest, Hungary
3. Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, P.O. Box 17, H-1525 Budapest, Hungary
4. Department of Organic Chemistry, Eötvös Loránd University, P.O. Box 32, H-1518 Budapest, Hungary
5. Faculty of Light Industry and Environmental Engineering, Óbuda University, Doberdó út 6, H-1034 Budapest, Hungary