1. Department of Chemistry and Biochemistry, Wichita State University, Wichita, Kansas 67260, United States
2. Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824, United States
3. Department of Chemistry, Missouri State University, Springfield, Missouri 65897, United States
4. Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701, United States
5. Materials Science and Engineering Program, Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, Arkansas 72701, United States