1. Department of Chemistry, Government College University Faisalabad, 38000-Faisalabad, Pakistan
2. Department of Applied Chemistry, Government College University Faisalabad, 38000-Faisalabad, Pakistan
3. Department of Chemistry, University of Houston, 3585 Cullen Boulevard, Texas 77204-5003, USA
4. Department of Physics, College of Science, University of Bisha, P.O. Box 551, Bisha 61922, Saudi Arabia
5. Department of Chemistry, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia