1. Department of Chemistry, North Carolina A&T State University, Greensboro, North Carolina 27411, United States
2. Department
of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
3. Center
for Academic Success, Louisiana State University, Baton Rouge, Louisiana 70803, United States
4. Department
of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221, United States
5. Department
of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States