1. Key Laboratory of Science and Technology on High-tech Polymer Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
2. Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P.R. China
3. Beijing Key Laboratory of Organic Materials Testing Technology and Quality Evaluation, Institute of Analysis and Testing, Beijing Academy of Science and Technology (Beijing Centre for Physical and Chemical Analysis), Beijing 100089, P.R. China
4. Aerospace Research Institute of Materials and Processing Technology, Beijing 100076, P.R. China