1. Laboratory of Organic Chemistry; ETH Zürich; Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
2. Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
3. Department of Molecular Design and Engineering; Graduate School of Engineering; Nagoya University; Chikusa-ku Nagoya 464-8603 Japan
4. Department of Molecular Physics; Faculty of Chemistry; Lodz University of Technology; Zeromskiego 116 90-924 Lodz Poland
5. Institute of Physical Chemistry; Johannes Gutenberg University Mainz; Duesbergweg 10-14 55128 Mainz Germany