1. Key
Laboratory of Molecular Nanostructure and Nanotechnology, Institute
of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
2. University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
3. Advanced
Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
4. The
Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
5. Key
Laboratory of Biomedical Polymers (Ministry of Education), College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People’s Republic of China