1. Department of Chemistry, University of Arkansas at Little Rock, 2801 S. University Ave, Little Rock, Arkansas 72204, United States
2. Arkansas State Crime Laboratory, 3 Natural Resources Dr, Little Rock, Arkansas 72205, United States
3. Department of Biology, University of Arkansas, 1 University of Arkansas, Fayetteville, Arkansas 72701, United States
4. Department of Radiation Oncology, University of Arkansas for Medical Sciences, Winthrop P. Rockefeller Cancer Institute, Arkansas Nanomedicine Center, 4301 W Markham St, Little Rock, Arkansas 72205, United States
5. Department of Biology, University of Arkansas at Little Rock, 2801 S. University Ave, Little Rock, Arkansas 72204, United States
6. School of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, United States