1. Department of Chemistry University of California, Riverside 501 Big Springs Road Riverside CA 92521 USA
2. Department of Physics & Astronomy University of California, Riverside 900 University Ave Riverside CA 92521 USA
3. College of Science and Health Professions-3124 King Saud bin Abdulaziz University for Health Sciences King Abdullah International Medical Research Center Ministry of National Guard Health Affairs Riyadh 11426 Kingdom of Saudi Arabia