1. Institut für Physikalische Chemie
2. Department Chemie
3. Universität zu Köln
4. D-50939 Köln
5. Germany
6. Laboratory of Organic Electronics
7. Department of Science and Technology
8. Linköping University
9. SE-60174 Norrköping
10. Sweden
11. Università di Bologna
12. Dipartimento di Chimica ‘Giacomo Ciamician’
13. 40126 Bologna
14. Italy