1. Department of Chemistry, Energy Institute and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration & Reconstruction; Hong Kong University of Science and Technology (HKUST); Clear Water Bay Kowloon Hong Kong
2. Department of Physics, Chemistry and Biology (IFM); Linköping University; Linköping SE-58183 Sweden
3. State Key Laboratory for Mechanical Behavior of Materials; Xi'an Jiaotong University; Xi'an 710049 P. R. China
4. Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
5. Cavendish Laboratory; J. J. Thomson Avenue; Cambridge CB3 0HE UK
6. HKUST-Shenzhen Research Institute; No. 9 Yuexing 1st RD, Hi-tech Park Nanshan Shenzhen 518057 P. R. China