1. Division
of Molecular Science, Faculty of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan
2. Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
3. R & D Division, Asahi Glass Co., Ltd., Ichihara, Chiba 290-8566, Japan
4. AGC Chemicals Americas, Inc. Exton, Pennsylvania 19341, United States