1. Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
2. Centre for Nanoscience, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
3. Department of Physics, School of Engineering and Applied Sciences, Bennett University, Greater Noida 201310, Uttar Pradesh, India
4. Centre of Excellence for Nanosensors and Nanomedicine, School of Engineering and Applied Sciences, Bennett University, Greater Noida 201310, Uttar Pradesh, India