1. Department of Organic Materials Science; Yamagata University; Yonezawa Yamagata 992-8510 Japan
2. JSR Corporation, 1-9-2, Higashi-Shinbashi; Minato-ku Tokyo 105-8640 Japan
3. Department of Chemical Science and Engineering; Tokyo Institute of Technology, Ookayama 2-12-1-E4-5; Meguro-ku Tokyo 152-8552 Japan