1. Department of Chemistry and Center for Optical Materials Science and Engineering Technologies (COMSET) Clemson University Clemson SC 29634 USA
2. Department of Chemistry and Chemistry Research Center United States Air Force Academy 2355 Fairchild Drive, 2N225 Colorado Springs CO 80840 USA
3. Department of Chemistry and The Alan G. MacDiramid NanoTech Institute The University of Texas at Dallas Richardson TX 75080 USA