1. Beijing National Laboratory for Molecular Sciences CAS Research/Education Center for Excellence in Molecular Sciences CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
2. University of Chinese Academy of Sciences Beijing 100049 P. R. China
3. Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 P. R. China
4. Beijing Synchrotron Radiation Facility Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 P. R. China
5. Institute of Theoretical and Computational Chemistry Shaanxi Key Laboratory of Catalysis School of Chemical & Environment Sciences Shaanxi University of Technology Hanzhong 723000 P. R. China
6. College of Chemistry and Materials Engineering Beijing Technology and Business University Beijing 100048 P. R. China