1. Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah-711103, West Bengal, India
2. Department of Chemistry, Haldia Government College, Debhog, Haldia, Purba Medinipur-721657, West Bengal, India
3. Division of Molecular Medicine, Bose Institute, P 1/12, CIT Scheme VIIM, Kolkata-700054, India