1. JST, ERATO, Isobe Degenerate π-Integration Project; Aoba-ku Sendai 980-8577 Japan
2. Konica Minolta; Ishikawa-cho Hachioji 192-8505 Japan
3. Department of Chemistry; The University of Tokyo; Hongo, Bunkyo-ku Tokyo 113-0033 Japan
4. Advanced Institute for Materials Research; Tohoku University; Aoba-ku Sendai 980-8577 Japan
5. Center for Emergent Matter Science, RIKEN; Wako Saitama 351-098 Japan