1. Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou 350207, China
2. Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
3. Institute of Molecular Aggregation Science of Tianjin University, Tianjin 300072, China
4. Chinese Academy of Key Laboratory of Organic Solids, Institute of Chemistry Sciences, Beijing 100190, China