1. Department of Chemistry; Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction; Division of Life Science; Institute for Advanced Study and Division of Biomedicine Engineering; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong P. R. China
2. School of Materials and Energy; Guangdong University of Technology; Guangzhou 510006 P. R. China
3. Chemistry Department; Loughborough University; Loughborough LE11 3TU UK
4. NSFC Center for Luminescence from Molecular Aggregates; SCUT-HKUST Joint Research Laboratory; State Key Laboratory of Luminescent Materials and Devices; South China University of Technology; Guangzhou 510640 P. R. China
5. HKUST-Shenzhen Research Institute; No. 9 Yuexing 1st RD, South Area, Hi-tech Park Nanshan Shenzhen 518057 P. R. China