1. Department of Chemistry, University of Kalyani, Nadia, India
2. Department of Chemistry and Chemical Technology, Vidyasagar University, Paschim Medinipur, India
3. Department of Chemistry, P. K. College, Purba Medinipur, India
4. Department of Chemistry, Mugberia Gangadhar Mahavidyalaya, Purba Medinipur, India
5. Department of Physics, Jadavpur University, Kolkata, India