1. Department of Chemistry, Gunma University, Kiryu, Gunma 376-8515, Japan, R & D Division, Asahi Glass Co., Ltd., Ichihara, Chiba, 290-8566, Japan, Central Laboratory, Asahi Glass Co., Ltd., Yokohama, Kanagawa, 221-8755, Japan, and Heian Jogakuin University, Takatsuki, Osaka 569-1092, Japan