1. Department
of Physical Chemistry, Basel University, Klingelbergstrasse 80. 4056, Basel, Switzerland
2. Institute of Polymer Chemistry and Physics of the Academy of Science of Uzbekistan, Tashkent, Uzbekistan
3. Laboratoire
de Physique des Solides, Univ. Paris-Sud, CNRS, UMR 8502, F-91405 Orsay Cedex, France
4. Center
for Cellular Imaging and NanoAnalytics, Biozentrum, University of Basel, Mattenstrasse 26, CH-4058 Basel, Switzerland