1. Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
2. International
Tomography Center, Siberian Branch, Russian Academy of Sciences, Institutskaya Str. 3a, 630090 Novosibirsk, Russian Federation
3. Institut
fuer Organische Chemie, Universitaet Mainz, Duesbergweg 10-14, 55099, Mainz, Germany