1. Contribution from the Department of Molecular Engineering, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan, Institute for Fundamental Chemistry, 34-4 Takano-Nishihiraki-cho, Sakyo-ku, Kyoto 606-8103, Japan, and Japan Science and Technology Corporation, Department of Materials Science and Engineering, Meijo University, Tenpaku-ku, Nagoya 468-8502, Japan