1. Department of Chemistry, SJCE, JSS Science and Technology University, Mysuru, Karnataka 570 006, India
2. Department of Studies in Physics, University of Mysore, Manasagangotri, Mysuru 570 006, India
3. Department of Chemistry, College of Science, King Saud University, P.O. Box. 2455, Riyadh 11451, Kingdom of Saudi Arabia