1. Centre for AIE Research Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials College of Material Science and Engineering Shenzhen University Shenzhen 518061 P. R. China
2. College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
3. Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction The Hong Kong University of Science and Technology Clear Water Bay, Kowloon Hong Kong China