1. Beijing
National Laboratory for Molecular Sciences (BNLMS), 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
Key Laboratory for Optical Materials and Photonic Devices, Department
of Chemistry, Capital Normal University, Beijing 100048, P. R. China
4. Department
of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
5. Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, P. R. China