1. Department of Physics, University of Central Florida, Orlando, Florida 32816, United States
2. Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
3. Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), National Institutes of Health, Bethesda, Maryland 20892, United States
4. Department of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
5. State Key Laboratory of Precision Spectroscopy, Shanghai Key Laboratory of Magnetic Resonance, Institute of Functional Materials, School of Physics and Materials Science, East China Normal University, Shanghai 200062, PR China
6. National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, United States