1. Department Chemie Johannes Gutenberg-Universität Mainz Duesbergweg 10–14 55128 Mainz Germany
2. Department of Physics and Astronomy The University of Sheffield Western Bank Sheffield S10 2TN UK
3. Department of Chemistry and Hylleraas Centre for Quantum Molecular Sciences University of Oslo PO-Box 1033 Blindern 0315 Oslo Norway
4. Department of Organic Materials Science Yamagata University 4-3-16 Jonan Yonezawa Yamagata-ken 992-8510 Japan