1. Department of Chemical & Biomolecular Engineering, Clemson University, Clemson, SC 29631, USA
2. Department of Chemical Engineering & Material Science, University of Minnesota, Minneapolis, MN 55455, USA
3. Center for Optical Materials Science & Engineering Technologies (COMSET), Clemson University, Clemson, SC 29670, USA
4. Department of Chemistry, University of Minnesota, Minneapolis, MN 55455, USA
5. Department of Bioengineering, Clemson University, Clemson, SC 29631, USA