1. Department of Physics Krantisinh Nana Patil College Walwa Sangli Maharashtra 416313 India
2. Department of Chemistry Bhogavati Mahavidyalaya Kurukali Maharashtra 416001 India
3. Government Vidarbha Institute of Science and Humanities VMV Road Amravati Maharashtra 444604 India
4. Department of Chemistry M.H. Shinde Mahavidyalaya, Tisangi Affiliated to Shivaji University Kolhapur Maharashtra 416206 India