1. Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
2. School of Stomatology of Nanchang University & Jiangxi Province Clinical Research Center for Oral Diseases & The Key Laboratory of Oral Biomedicine, Nanchang 330006, China
3. Department of Chemistry, Washington University, St. Louis, Missouri 63130, United States
4. Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Hong Kong S.A.R. 999077, China