1. Department of Chemistry, Durham University, Durham DH13LE, UK.
2. Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, H-1525 Budapest, Hungary.
3. Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, UK.
4. Jozef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia.
5. Quantum-Phase Electronics Center and Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan.
6. European Synchrotron Radiation Facility, 38043 Grenoble, France.
7. Japan Synchrotron Radiation Research Institute, SPring-8, Hyogo 679-5198, Japan.
8. RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan.
9. World Premier International–Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan.
10. Japan Science and Technology Agency, ERATO Isobe Degenerate π-Integration Project, Tohoku University, Sendai 980-8577, Japan.