1. Department of Chemistry and Biochemistry
2. University of Bern
3. CH-3012 Bern
4. Switzerland
5. Laboratory of Photonics and Interfaces
6. Institute of Chemical Science and Engineering
7. École Polytechnique, Fédérale de Lausanne (EPFL)
8. CH-1050 Lausanne
9. Laboratory of Computational Chemistry and Biochemistry
10. Department of Chemistry and Centre for Theoretical and Computational Chemistry (CTCC)
11. University of Oslo
12. N-0315 Oslo
13. Norway