1. Department of Chemistry, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
2. Department of Physics, College of Science, King Khalid University, Abha 61413, P. O. Box 9004, Saudi Arabia
3. Graduate School, Department of Chemistry, Chosun University, Gwangju 501-759, Republic of Korea
4. Department of Chemistry, College of Science, King Khalid University, Abha 61413, P. O. Box 9004, Saudi Arabia
5. Laboratoire de Chimie des Matériaux, Université de Carthage Faculté des Sciences de Bizerte, 7021 Zarzouna, Tunisie