1. Department of Chemistry Tsinghua University Beijing 100084 P. R. China
2. Key Laboratory of Light Energy Conversion Materials of Hunan Province College, College of Chemistry and Chemical Engineering Hunan Normal University Changsha 410081 P. R. China
3. State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing 100029 P. R. China
4. College of Chemistry and Molecular Engineering Peking University, Beijing National Laboratory for Molecular Sciences (BNLMS) 5 Yiheyuan Road Beijing 100871 P. R. China
5. National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230029, Anhui P. R. China
6. Department of Chemistry, Analytical Instrumentation Center Capital Normal University Beijing 100048 P. R. China
7. College of Chemistry Beijing Normal University Beijing 100875 P. R. China
8. Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 P. R. China