1. Department of Chemistry and the Hong Kong Branch of the Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong 999077, China
2. Department of Chemistry, City University of Hong Kong, Kowloon Tong, Hong Kong 999077, China
3. School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen (CUHK-Shenzhen), Guangdong 518172, China
4. Center for Aggregation-Induced Emission, South China University of Technology, Guangzhou 510640, China