1. Department of Applied Chemistry, Nagoya Institute of Technology, Showa-ku, Nagoya 466-8555, Japan, Osaka Gas Co., Ltd., 6-19-9 Torishima, Konohana-ku, Osaka 554-0051, Japan, and Teijinseiki Co., Ltd., 3-2-1 Sakato, Takatsu-ku, Kawasaki 213-0012, Japan