1. School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
2. Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, United States
3. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
4. Institute of Molecular Sciences and Engineering, Shandong University, Qingdao 266237, P. R. China
5. State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, P. R. China
6. Department of Electrical and Computer Engineering, University of Houston, Houston, Texas 77004, United States