1. Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo‐ku, Kyoto 615‐8510, Japan, Fax: +81‐75‐383‐2732, http://HP: http://www.sbchem.kyoto‐u.ac.jp/kitagawa‐lab/
2. Department of Chemistry, Faculty of Science, Kyushu University, 6‐10‐1 Hakozaki, Higashi‐ku, Fukuoka 812‐8581, Japan, Fax: +81‐92‐642‐2570, http://www.scc.kyushu‐u.ac.jp/Sakutaibussei
3. Quantum Order Research Group, RIKEN SPring‐8 Center, Koto 1‐1‐1, Sayo‐cho, Sayo, Hyogo 679‐5148, Japan
4. Institute for Integrated Cell‐Material Sciences (iCeMS), Kyoto University, Yoshida, Sakyo‐ku, Kyoto 606‐8501, Japan