1. Department of Chemistry, College of Science, Research Center for Advanced Materials Science (RCAMS), King Khalid University, P. O. Box 9004, Abha 61413, Saudi Arabia
2. Faculty of Science, Department of Physics, King Abdulaziz University, Jeddah, Saudi Arabia
3. Department of Polymer Engineering, University of Chemical Technology and Metallurgy, 1756 Sofia, Bulgaria
4. Faculty of Engineering, Department of Communication and Computer Engineering, South-West University ‘Neofit Rilski’, 2700 Blagoevgrad, Bulgaria
5. Electromagnetic Compatibility Laboratory, Bulgarian Institute of Metrology, 1040, Sofia, Bulgaria