1. School of Polymer Science and Engineering, The University of Southern Mississippi, 118 College Drive, #5050, Hattiesburg, Mississippi 39406, United States
2. Department of Science, Copiah-Lincoln Community College Natchez Campus, 11 Co-Lin Circle, Natchez, Mississippi 39120, United States
3. Department of Chemistry and Department of Physics and Astronomy, The University of Texas Rio Grande Valley, 1201 W. University Drive, Edinburg, Texas 78539, United States
4. School of Science and Engineering, Jones County Junior College, 900 S. Court Street, Ellisville, Mississippi 39437, United States