1. Department
of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
2. Spectroscopy
Laboratory for Functional π-Electronic Systems and Department
of Chemistry, Yonsei University, Seoul 120-749, South Korea
3. Center
for Instrumental Analysis, Niigata University, Nishi-ku, Niigata 950-2181, Japan