Institution: | 1. Division of Biotechnology and Macromolecular Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo 060‐8628, Japan, Fax: (+81) 11‐706‐6607;2. Organization for the Promotion of Research on Nanoscience and Nanotechnology, Osaka University, Toyonaka 560‐8531, Japan;3. Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305‐8571, Japan |