1. Department of Physics, Vidyavardhaka College of Engineering, Visvesvaraya Technological University, Mysuru 570 002, India
2. Department of Physics, The National Institute of Engineering (North Campus), Mysuru 570 018, India
3. Department of Studies in Physics, University of Mysore, Mysore 570 006, India
4. Department of Chemistry, Faculty of Science, University of Kinshasa, Kinshasa B.P. 190, Democratic Republic of the Congo
5. Research Center for Theoretical Chemistry and Physics, Faculty of Science, University of Kinshasa, Kinshasa B.P. 190, Democratic Republic of the Congo
6. Department of Chemistry, The University of Manchester, Manchester M13 9PL, UK
7. Department of Chemistry, Rhodes University, Makhanda 6140, South Africa
8. Department of Physics, Mysore University School of Engineering, Manasagangotri, University of Mysore, Mysore 570 006, India
9. Department of Chemistry, Vidyavardhaka College of Engineering, Visvesvaraya Technological University, Mysuru 570 002, India