1. Department of Studies and Research in Industrial Chemistry
2. School of Chemical Sciences
3. Kuvempu University
4. Shankaraghatta-577 451
5. India
6. Center for Materials Science and Technology
7. University of Mysore
8. Mysuru 570 006
9. Department of Physics, Faculty of Science
10. Department of Chemistry, College of Science, King Saud University
11. Riyadh, 11451
12. Saudi Arabia