Katsuhiko Naoi1,2, Yasushi Oura1,2, Michiko Maeda1,2, S. Nakamura1,2
1Department of Applied Chemistry, Faculty of Technology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184, Japan
2Department of Chemical and Biological Science, Faculty of Science, Japan Women's University, Mejirodai, Bunkyo‐ku, Tokyo 112, Japan