1. National Institutes of Materials and Chemical Research, Tsukuba, Ibaraki 305, Japan
2. CRC Research Institute, Inc., Engineering-System Division, 2-7-5 Minamisuna, Koutou-ku, Tokyo 136, Japan
3. Department of Applied Chemistry, Faculty of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113, Japan
4. Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112, Japan