Affiliation: | 1. Shanghai Institute of Organic Chemistry, Chinese Academy of Science, 345 Lingling Rd, Shanghai 200032 (China), Fax: (+86)?21‐6416‐6128;2. Department of Chemistry, College of Science, Tianjin University, Tianjin 300072 (China);3. Department of Chemistry and Research Center for Materials Science, Nagoya University, Chikusa, Nagoya 464‐8602 (Japan), Fax: (+81)?52‐783‐4177 |