1. Contribution from the Department of Bioscience and Biotechnology, Faculty of Science and Engineering, Ritsumeikan University, Kusatsu 525-8577, Japan, Department of Materials Molecular Science, Institute for Molecular Science (IMS), Okazaki 444-8787, Japan, Organic Nanomaterials Center, National Institute for Materials Science (NIMS), Tsukuba 305-0047, Japan, and MPI-NIMS International Joint Laboratory, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany