1. Department of Polymer Materials; College of Materials Science and Engineering; Shanghai University; Nanchen Road 333 Shanghai 200444 China
2. Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province; Ningbo Institute of Material Technology and Engineering; Chinese Academy of Sciences; Ningbo 315201 China
3. University of Chinese Academy of Sciences; 19A Yuquan Road Beijing 100049 China
4. School of Chemistry; Sun Yat-sen University; Xin Gang Xi Road 135# Guangzhou Guangdong 510275 China
5. Karlsruhe Institute of Technology; Engesser Str. 18, Gebaude 11.23, D-76131 Karlsruhe; Germany