1. CAS Key Laboratory of Standardization and Measurement for Nanotechnology
2. CAS Center for Excellence in Nanoscience
3. National Center for Nanoscience and Technology (NCNST)
4. Beijing 100190
5. P. R. China
6. Beijing National Laboratory for Molecular Sciences
7. Center for Soft Matter Science and Engineering
8. Key Lab of Polymer Chemistry & Physics of the Ministry of Education
9. College of Chemistry
10. Peking University
11. Department of Chemistry
12. School of Science
13. Beijing Jiaotong University
14. Beijing