1. Joint School of National niversity of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou 350207, China
2. Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
3. Department of Physics, National University of Singapore, 2 Science Drive 3, 117542, Singapore
4. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
5. Institute of Molecular Plus, Tianjin University, Tianjin 300072, China
6. Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin 300350, China
7. Department of Chemistry, Tianjin University & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China