1. State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou 730000, China
2. Lanzhou Institutes for Food and Drug Control, Lanzhou 730000, China
3. Key Laboratory of Digestive System Tumors, Lanzhou University, Lanzhou 730000, China
4. Department of Physics, University of the Free State, Bloemfontein 9301, South Africa
5. Department of Chemistry and Center for Fluorinated Functional Materials, University of South Dakota, Vermillion, South Dakota 57069, United States