1. Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education College of Chemistry & Materials Science Northwest University Xi'an Shaanxi 710127 P. R. China
2. Shanghai Synchrotron Radiation Facility Zhangjiang Laboratory Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201210 China
3. Division of Physical Biology CAS Key Laboratory of Interfacial Physics and Technology Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800 China
4. University of Chinese Academy of Sciences Beijing 100049 China
5. School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200127 China
6. Instrumental Analysis Center Shanghai Jiao Tong University Shanghai China