1. Department of Chemistry; Graduate School of Science; Tohoku University; 6-3 Aramaki Aza Aoba, Aoba-ku 980-8578 Sendai Japan
2. Research and Analytical Center for Giant Molecules; Graduate School of Science; Tohoku University; 6-3 Aramaki Aza Aoba, Aoba-ku 980-8578 Sendai Japan