1. Department of Chemistry, Surendranath College, Kolkata 700 009, India
2. Analytical Chemistry Division, BARC, Variable Energy Cyclotron Centre, Kolkata 700 064, India
3. Department of Chemistry, Santipur College, Nadia, Pin: 741 404, West Bengal, India
4. Lincoln University College, Petaling Jaya-47301, Malaysia
5. Department of Chemistry, Sripat Singh College, Jiaganj-742 123, Murshidabad, West Bengal, India