1. Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
2. Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
3. RIKEN Spring-8 Center, Sayo-cho, Sayo-gun, Hyogo 679-5148 Japan