1. Chemistry and Life Science School, Advanced Institute
of Materials Science, Changchun University of Technology, 2055 Yanan
Street, Changchun, Jilin 130012, P. R. China
2. State Key Laboratory of Polymer Physics and Chemistry, Changchun
Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, P. R. China
3. University of Chinese Academy of Sciences, Beijing 100049, P. R. China