1. College of Materials Science and Engineering
2. Beijing Key Laboratory of Special Elastomer Composite Materials
3. Beijing Institute of Petrochemical Technology
4. Beijing 102617
5. P. R. China
6. Department of Materials Science and Engineering
7. College of Engineering
8. Peking University
9. Beijing 100871
10. Beijing National Laboratory for Molecular Sciences
11. CAS Key Laboratory of Organic Solids
12. Institute of Chemistry
13. Chinese Academy of Sciences
14. Beijing 100190