1. Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
2. Department of Microbiology, University of Georgia, Athens, Georgia 30602, United States
3. Department of Biology, Georgia State University, Atlanta, Georgia 30303, United States
4. School of Physics and School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States