1. Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Collaborative Innovation
Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
2. Department
of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, United States
3. NCO Technologies LLC, Concord, North Carolina 28027, United States