1. Department of Chemistry, Aliah University, New Town, Kolkata 700 160, India
2. Institute for Integrated Cell-Material Sciences, Kyoto University, Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto 606-8501, Japan
3. Department of Chemistry, Saheed Nurul Islam Mahavidyalaya, Tentulia, West Bengal 743286, India