Affiliation: | 1. Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1‐1‐1 Tennoudai, Tsukuba, Ibaraki 305‐8571 (Japan), Fax: (+81)?29‐853‐4323;2. Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2‐1 Yamada‐oka, Suita, Osaka 565‐0871 (Japan), Fax: +81‐6‐6879‐7370;3. Department of Bioinspired Science, Ewha Womans University, Seoul 120‐750 (Korea) |