1. Department of Chemistry and Department of Physics & Astronomy, Louisiana State University, Baton Rouge, LA, USA
2. Natural Sciences and Industrial Engineering, University of Applied Sciences Deggendorf, Deggendorf, Germany
3. Deutsches Institut für Kautschuktechnologie e. V., Hannover, Germany
4. Institut für Physik, Universität Regensburg, Regensburg, Germany