1. State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
2. Bruker BioSpin Corporation, 15 Fortune Drive, Billerica, Massachusetts 01821, United States
3. National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, United States
4. Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
5. Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300071, China