1. Department of Chemistry, North Bengal University, Darjeeling 734013, India
2. CSIR−Central Glass & Ceramics Research Institute, 196 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
3. Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers and Advanced Materials Laboratory, Fudan University, Shanghai 200433, P. R. China
4. Institute of Nano Science and Technology, Mohali 166062, Punjab, India
5. Raiganj University, Raiganj 733134, India