1. Department of Chemistry; University of Zululand; Private Bag X1001 Kwa-Dlangezwa 3886 South Africa
2. Polymers and Materials Synthesis (PMS) Lab; Department of Physics; COMSATS Institute of Information Technology (CIIT); Chak Shahzad Islamabad Pakistan
3. School of Materials; The University of Manchester; Oxford Road Manchester M13 9PL United Kingdom