1. Department of Chemistry Jadavpur University, Kolkata 700 032, India
2. School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
3. Aliah University, ll-A/27, Action Area II, Newtown, Action Area II, Kolkata, West Bengal 700160, India
4. Department of Biochemistry, University of Lausanne, Ch. des Boveresses 155, Epalinges 1066, Switzerland