1. Catalysis and Peptide Research Unit; School of Health Sciences; University of KwaZulu-Natal; Durban 4001 South Africa
2. Inorganic and Organic Department; University of Barcelona; Martí Franqués 1-11 08028 Barcelona Spain
3. Department of Chemistry; College of Science; King Saud University; P.O. Box 2455 Riyadh 11451 Saudi Arabia
4. Department of Chemistry; Faculty of Science; Alexandria University; P.O. Box 426, Ibrahimia Alexandria 21321 Egypt
5. School of Chemistry; Yachay Tech; Yachay City of Knowledge; Urcuqui Ecuador
6. School of Laboratory of Medicine & Medical Sciences; University of KwaZulu-Natal; Durban 4001 South Africa
7. School of Chemistry & Physics; University of KwaZulu-Natal; Durban 4001 South Africa
8. CIBER-BBN, Networking Centre on Bioengineering; Biomaterials and Nanomedicine; Barcelona Science Park; Baldiri Reixac 10-12 08028 Barcelona Spain