1. Department of Chemical Sciences; I. K. Gujral Punjab Technical University, Kapurthala; Punjab-144603 India
2. UNAM-National Nanotechnology Research Center; Institute of Materials Science and Nanotechnology; Department of Chemistry; Bilkent University, 06800; Turkey
3. Department of Pharmaceutical Sciences; Guru Nanak Dev University; Amritsar-143005 India
4. Department of Chemistry; Guru Nanak Dev University; Amritsar-143005 India
5. Pharmacy Department; University of KwaZulu Natal; Westville Campus, Durban; Chemistry Department; University of Oye-Ekiti, Ekiti State; Nigeria
6. School of Chemistry and Physics; University of KwaZulu Natal, P/Bag X54001, Westville; Durban 4000 South Africa