1. Department of Chemistry, Faculty of Science, Gakushuin University, Toshima-ku, Tokyo 171-8588, Japan
2. Department of Chemistry, Graduate School of Science and Technology, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
3. Department of Electrical and Electronic Engineering, Faculty of Engineering, Toyama Prefectural University, Imizu, Toyama 939-0398, Japan