1. Department of Chemistry, Middle Tennessee State University, 1301 East Main Street, Murfreesboro, Tennessee 37132, United States
2. Department of Chemistry and Biochemistry, Georgia Southern University, 11935 Abercorn Street, Savannah, Georgia 31419, United States
3. Department of Chemistry and Physics, Western Carolina University, 111 Memorial Drive, Cullowhee, North Carolina 28723, United States