1. Center of Super-Diamond and Advanced Films (COSDAF) & Department of Chemistry City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong SAR P. R. China
2. Joint Laboratory of Nano-organic Functional Materials and Devices (TIPC and CityU) City University of Hong Kong Kowloon Hong Kong SAR P. R. China
3. Department of Chemical and Biological Engineering Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and SCUT-HKUST Joint Research Laboratory The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong SAR P. R. China
4. College of Pharmaceutical Sciences Soochow University Suzhou 215123 P. R. China
5. Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China