1. Department of Chemistry, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
2. Department of Pharmacy, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
3. Solid State Physics Division, Bhabha Atomic Research Centre (BARC), Trombay, Mumbai, Maharashtra 400085, India