1. Department of Chemistry, Michigan Technological University, Houghton, Michigan49931, United States
2. Department of Chemical Engineering, Michigan Technological University, Houghton, Michigan49931, United States
3. Department of Biological Sciences, Michigan Technological University, Houghton, Michigan49931, United States
4. The Chemistry Research Laboratory, Department of Chemistry and the Ineos Oxford Institute for Antimicrobial Research, University of Oxford, Mansfield Road, OxfordOX1 3TA, United Kingdom