1. Institute of Organic Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
2. Faculty of Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland
3. Institute of Experimental Physics, Faculty of Physics University of Warsaw, Pasteura 5, 02-093 Warsaw, Poland
4. Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90363 Łódź, Poland
5. Organic Materials Research Group, Department of Chemistry, Middle Tennessee State University, Murfreesboro, TN 37132, USA
6. Center for Nanosystems Chemistry and Bavarian Polymer Institute, Theodor-Boveri-Weg 4, 97074 Würzburg, Germany