1. Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
2. Department of Electrical and Computer Engineering, Clemson University, Clemson, South Carolina 29634, United States
3. Department of BioEngineering, Clemson University, Clemson, South Carolina 29634, United States
4. Center for Optical Materials Science and Engineering Technology (COMSET) and Environmental Toxicology Program, Clemson University, Clemson, South Carolina 29634, United States