1. Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
2. National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
3. Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
4. Department of Materials Science and Engineering, Department of Chemistry, and Center of Super-Diamond and Advanced Films, City University of Hong Kong, Kowloon 999077, Hong Kong SAR