1. CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Centre for Excellence in Molecular Sciences Beijing National Laboratory for Molecular Sciences (BNLMS) Institute of Chemistry Chinese Academy of Sciences (CAS) 100190 Beijing P. R. China
2. Key Laboratory of Science and Technology on High-tech Polymer Materials Institute of Chemistry Chinese Academy of Sciences 100190 Beijing P. R. China
3. University of Chinese Academy of Sciences (UCAS) 100049 Beijing P. R. China
4. Beijing National Laboratory for Molecular Sciences State Key Laboratory of Polymer Physics and Chemistry Institute of Chemistry Chinese Academy of Sciences 100190 Beijing P. R. China
5. Beijing National Laboratory for Molecular Sciences National Centre for Mass Spectrometry in Beijing CAS Key Laboratory of Analytical Chemistry for Living Biosystems Institute of Chemistry Chinese Academy of Sciences 100190 Beijing P. R. China