1. Department of Chemistry, Alex Ekwueme Federal University Ndufu Alike Ikwo, Abakaliki, Nigeria
2. School of Pharmacy, Department of Pharmaceutics, University of the Western Cape, Cape Town, South Africa
3. Department of Chemistry, Anambra State University, Uli, Nigeria
4. Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, Awka, Nigeria
5. Department of Science Laboratory Technology, Institute of Management and Technology, Enugu, Nigeria