1. State
Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation
Center of Chemical Science and Engineering, and Research Center for
Analytical Sciences, College of Chemistry, Nankai University, Tianjin, China
2. Laboratory
of Molecular Imaging and Nanomedicine (LOMIN), National Institute
of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States
3. State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361005, China
4. Optical
Technology Division, Physics Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States