1. Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
2. University of Chinese Academy of Sciences Beijing 100049 China
3. Key Laboratory of Functional Polymer Materials Center for Nanoscale Science and Technology Institute of Polymer Chemistry College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University Tianjin 300071 China
4. State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an 710049 China