1. Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
2. Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
3. Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695, United States
4. College of Engineering and Computing, University of South Carolina, Columbia, South Carolina 29208, United States