1. Max Planck Institute for Polymer Research, Ackermannweg 10; 55128 Mainz Germany
2. Third Department of Medicine; University Medicine of the Johannes Gutenberg University, Langenbeckstr. 1; 55131 Mainz Germany
3. Optics and Spectroscopy Department; Faculty of Physics, Sofia University “St. Kliment Ochridski,” James Bourchier 5; 1164 Sofia Bulgaria
4. Materials Science Laboratory, Sony Deutschland GmbH, Hedelfingerstr. 61; 70327 Stuttgart Germany