1. Centre for Chemical Sciences and Technology, Institute of Science and Technology , Jawaharlal Nehru Technological University Hyderabad , Kukatpally , Hyderabad , Telangana 500085 , India
2. Department of Chemistry, School of Science , GITAM deemed to be University , Hyderabad , Telangana 502 329 , India
3. School of Chemistry & Physics, College of Agriculture, Engineering & Science, Westville Campus , University of KwaZulu-Natal , P Bag X 54001 , Durban 4000 , South Africa