1. Faculty of Science and Technology, Science University of Tokyo, 2641, Yamazaki, Noda, Chiba 278, Japan, Institute of Colloid and Interface Science, Science University of Tokyo, 1-3, Kagurazaka, Shinjuku, Tokyo 162, Japan, Faculty of Engineering, Science University of Tokyo, 1-3, Kagurazaka, Shinjuku, Tokyo 162, Japan, and Department of Chemistry, School of Science, Kitasato University, Sagamihara, Kanagawa 228, Japan