1. Centre for Nanoscience and Nanotechnology, Panjab University, Sector 25, Chandigarh-160014, India
2. Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Sector 14, Chandigarh-160014, India
3. University Institute of Pharmaceutical Sciences, Panjab University, Sector 14, Chandigarh-160014, India
4. Department of Applied Sciences, University Institute of Engineering and Technology, Panjab University, Sector 25, Chandigarh-160014, India