1. Department of Chemistry, Wichita State University, 1845 Fairmount, Wichita, KS 67260‐0051 (USA), Fax: (+1) 316‐978‐3431
2. Department of Material and Life Science, Graduate School of Engineering, Osaka University, Suita, Osaka 565‐0871 (Japan), Fax: (+81) 6‐6879‐7370
3. Department of Bioinspired Science, Ewha Womans University, Seoul 120‐750 (Korea)