1. P. G. Department of Chemistry, Andhra Loyola College, Vijayawada, Andhra Pradesh, India;
2. Department of Chemistry, St. Joseph’s College, Tiruchirapalli, Tamil Nadu, India;
3. P. G. Department of Chemistry, P. B. Siddhartha College of Arts & Sciences, Vijayawada, Andhra Pradesh, India;
4. Department of Physics, Veer Surendra Sai University of Technology, Burla Sambalpur, Odisha, India