1. Institute of Molecular Aggregation Science Tianjin University Tianjin 300072 China
2. Department of Chemistry Wuhan University Wuhan 430072 China
3. Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City, Fuzhou 350207 China
4. Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan 430074 China