1. Center for Green Research on Energy and Environmental Materials
2. National Institute for Materials Science
3. Ibaraki 305-0044
4. Japan
5. Department of Chemistry
6. Yale University
7. New Haven
8. USA
9. Nanoscience Center
10. University of Jyväskylä
11. Jyväskylä
12. Finland
13. The Institute of Solid State Physics
14. the University of Tokyo
15. Chiba 277-8581