Affiliation: | 1. Department of Chemistry, Graduate School of Science, Hiroshima University, 1‐3‐1 Kagamiyama, Higashi‐Hiroshima 739‐8526 (Japan), Fax: (+81)?82‐424‐0724;2. Center of Quantum Life Science and Graduate School of Science, Hiroshima University, 1‐3‐1 Kagamiyama, Higashi‐Hiroshima 739‐8526 (Japan), Fax: (+81)?561‐63‐6302;3. Toyota Physical and Chemical Research Institute, Nagakute, Aichi‐gun, Aichi 480‐1192 (Japan) |