1. Department of Biological Sciences; University of North Carolina at Charlotte; 9201 University City Boulevard; Charlotte NC 28223 USA
2. Nanoscale Science Program; Department of Chemistry; University of North Carolina at Charlotte; Charlotte NC 28223 USA
3. National Center for Advancing Translational Sciences; National Institutes of Health; Rockville MD 20850 USA
4. Department of Chemistry; Ball State University; Muncie IN 47306 USA
5. Department of Chemistry; New York University; New York NY 10003 USA
6. Nanotechnology Characterization Lab; Cancer Research Technology Program; Leidos Biomedical Research, Inc; Frederick National Laboratory for Cancer Research; Frederick MD 21702 USA
7. The Center for Biomedical Engineering and Science; University of North Carolina at Charlotte; Charlotte NC 28223 USA