1. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan, Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8577, Japan, Department 5, R & D Center, Research and Development Group, Ricoh Company Ltd., Natori, 981-1241, Japan, and Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, USA