1. Department of Orthopedic Surgery; National University of Singapore; Singapore 119228 Singapore
2. Department of Chemistry; National University of Singapore; Singapore 117543 Singapore
3. Singapore Bioimaging Consortium; Agency for Science, Technology and Research (A*STAR); Singapore 138667 Singapore
4. Key Laboratory of Flexible Electronics & Institute of Advanced Materials; Jiangsu National Synergetic Innovation Center for Advanced Materials; Nanjing Tech University; Nanjing 211816 P. R. China
5. Singapore Institute of Neurotechnology (SINAPSE); Singapore 117456 Singapore
6. Molecular Imaging & Therapy Branch; National Cancer Center; Gyeonggi-do 10408 Republic of Korea
7. Department of Biomedical Engineering; Johns Hopkins University School of Medicine; Baltimore MD 21205 USA
8. Division of Chemistry and Biological Chemistry; Nanyang Technological University; Singapore 637371 Singapore
9. SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology; Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province; Shenzhen University; Shenzhen 518060 P. R. China