1. Department of Chemistry; University of Minnesota; 207 Pleasant Street SE Minneapolis MN
2. Department of Organic and Polymeric Materials; Tokyo Institute of Technology; 2-12-1 Ohokayama, Meguro-ku Tokyo 152-8552 Japan
3. Department of Chemical Science and Technology; Hosei University; 3-7-2 Kajino-chou, Koganei Tokyo 184-8584 Japan