1. Beijing National Laboratory for Molecular Sciences; Key Laboratory of Organic Solids; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
2. Tianjin Key Laboratory of Molecular Optoelectronic Sciences; Department of Chemistry; School of Science; Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300072 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. School of Chemistry and Chemical Engineering; University of Chinese Academy of Sciences; Beijing 100049 P. R. China
5. Department of Physics and Astronomy; Shanghai Jiaotong University; Shanghai 200240 P. R. China