1. Department of Chemistry The Chinese University of Hong Kong Shatin, New Territories Hong Kong China
2. Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Road Shanghai 230032 China
3. Henan Key Laboratory of Organic Functional Molecules and Drug Innovation School of Chemistry and Chemical Engineering Henan Normal University China
4. Department of Materials Science and Engineering and Centre for Functional Photonics (CFP) City University of Hong Kong Hong Kong China