1. Institute for Integrated Cell-Material Science (WPI-iCeMS) Kyoto University Yoshida, Sakyo-ku, Kyoto 606-8501 Japan
2. Department of Synthetic Chemistry and Biological Chemistry Graduate School of Engineering Kyoto University Katsura, Nishikyo-ku, Kyoto 615-8510 Japan
3. Department of Macromolecular Science and Engineering Kyoto Institute of Technology Matsugasaki, Sakyo-ku, Kyoto 606-8585 Japan