1. Centre for Advanced Studies in Chemistry, North-Eastern Hill University, Shillong, India;
2. Centre for Biotechnology (CBT), Institute of Science & Technology (IST), Jawaharlal Nehru Technological University Hyderabad (JNTUH), Hyderabad, Telangana State, India;
3. Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Huddersfield, UK;
4. Department of Chemistry, University of Washington, Seattle, Washington, USA