Affiliation: | 1. Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2‐1 Yamadaoka, Suita 565‐0871, Japan, Fax: (+81)?6‐6879‐7406;2. Department of Applied Chemistry, Graduate School of Engineering, Osaka City University, Sugimoto, Sumiyoshi‐ku, Osaka 558‐8585, Japan |