1. R & D Center, Organo Corporation, 4-4-1 Nishionuma, Minami-ku, Sagamihara-city, Kanagawa 252-0332, Japan
2. Department of Material and Biological Chemistry, Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-machi, Yamagata 990-8560, Japan
3. Department of Chemistry, Faculty of Science, Saitama University, 255 Shimo-Okubo, Urawa 338-8570, Japan