1. Physical Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India
2. School of Chemical Science, National Institute of Science Education and Research (NISER), Bhubaneswar 752050, India
3. Department of Physics, The University of Burdwan, Burdwan 713104, India
4. Department of Instrumentation Science, Jadavpur University, Kolkata 700032, India