1. Departments of Chemistry and Physics, Advanced Carbon Materials Center, University of Kentucky, Lexington, Kentucky 40506-0055, Carbon Solutions, Inc, A 152 ASTeCC Building, University of Kentucky, Lexington, Kentucky 40506-0286, ElectroOptics Research Institute, University of Louisville, Louisville, Kentucky 40292, and Department of Chemistry and Physics, Center for Nanoscale Science and Technology, Rice University, Houston, Texas 77251