1. Department of Chemistry and Center for Emerging Materials and Advanced Devices, National Taiwan University, Taipei 10617, Taiwan
2. Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan
3. Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
4. Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan
5. National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan