- characterization and applications of porphyrins in photodynamic therapy
- drug-metal complexes
- Schiff bases
- solvent-free synthesis of coordination compounds
- Coordination Chemistry
Gabriel Kehinde Obiyenwa
I have a bachelor of science (BSc) degree in Chemistry from Obafemi Awolowo University. Ile-Ife, Nigeria and postgraduate diploma in education (PGDE).My postgraduate (MSc and PhD) degrees in Chemistry were obtained from University of Ilorin, Ilorin, Nigeria withthesis and dissertation in Inorganic Chemistry.Afterward, I proceeded toNanomaterial Laboratory, Department of Applied Chemistry, University of Johannesburg, South Africa for asix-monthpostdoctoral benchwork.
Earlier after my first degree I worked for more than five years as an analyst and then as quality control manager at a pharmaceutical industry before I began my academic career at Kwara State University, Malete,between 2014 and 2015 as Lecturer II and the departmental examination officer.I joined Federal University Lokoja, Lokoja, Nigeria in 2015 and my present position is Lecturer I. I haveteaching experience cutting across Inorganic and Physical Chemistry courses at undergraduate and postgraduate levels. I have supervised several undergraduate projects and served as examination officer in the Chemistry Department and level coordinator for some years.
My research activities involve but not limited to synthesis and characterization of drug-metal complexes, metalloporphyrins, porphyrin-quantum-dots conjugates in photodynamic therapy for cancer treatment, Schiff bases and mixed-ligand coordination compounds using conventional and green methods of synthesesfor antimicrobial studies. I have some publications in the areas of coordination chemistry, porphyrin chemistry, and porphyrin-quantum-dots. In the course of my laboratory work I have the knowledge of using several instruments including UV-Visible Spectrophotometers, Fluorophotometer (for photoluminescence measurements), Powder X-ray Diffractometer, Fourier Transform Infrared Spectrophotometer (FTIR), Magnetic Susceptibility Balance and techniques such as elemental analysis, Proton Nuclear Magnetic Resonance and Single Crystal X-ray Diffraction. I have participated and presented papers at several conferences organized by our professional body, Chemical Society of Nigeria (CSN) as a member, and some universities in Nigeria.
I am married with three childrenand have strong interest in teaching, singing, and reading.
Tsolekile N., Ncapayi V., Obiyenwa G.K., Matoetoe M., Songca S. & Oluwafemi O.S. (2019). Synthesis of meso-tetra-(4-sulfatophenyl)porphyrin (TPPS4) – CuInS/ZnS quantum dots conjugate as an improved photosensitizer.. International Journal of Nanomedicine 14, 7065-7078.
Obiyenwa G.K., Obaleye J.A., Salawu O.W., Olufunso A.O. & Akaangee P.A. (2018). Manganese (II) and Iron (II) complexes of cloxacillin – synthesis, spectral studies and antimicrobial activities.. Confluence Journal of Pure and Applied Sciences (CJPAS) 1(2), 161-169
Obiyenwa Gabriel K. (2018). Mechanochemical solvent-free synthesis, spectroscopic and powder X-ray studies of 3-pyridinecarboxamide and 2-hydroxybenzoic acid.. 2018 International Conference of the Faculty of Science, Obafemi Awolowo University, Ile-Ife, Nigeria, October 1-5, 2018, Abstract number FSC-OAU-2018-10-082
Joshua A. Obaleye, Adedibu C. Tella, Gabriel K. Obiyenwa, Nzikahyel Simon & Margaret D. Olawale (2016). Zinc(II) complex of meso-tetraphenylporphyrin with 4-methoxyaniline: Crystal structure and antimicrobial activities of 4-methoxyaniline-5, 10, 15, 20-tetraphenyl-porphyrinatozinc (II),. DOI: 10.1080/15533174.2014.988813, Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry46(4), 589-595
Obaleye J.A. and Obiyenwa G.K. (2013). Zinc (II) and Iron (III) metalloporphyrins – Synthesis, characterisation and molecular structure of p-anisidine-5,10,15,20-tetraphenylporphyrinatozinc (II),. 36th Annual International Conference of Chemical Society of Nigeria, September 16-20, 2013
Obaleye J.A. and Obiyenwa G.K. (2012). Metal complexes of Cloxacillin, tetraphenylporphyrins and p-anisidine: synthesis, structural elucidation and biological potency.. Proceedings of the Joint Conference on Science and Technology for Development in Africa, (held at Cape Peninsula University of Technology, South Africa), 26th-28th June, 2012
Obaleye J.A., Tella A., Balogun E., Awotunde O., Adebayo J., Omojasola P., Obiyenwa G., Simon N., Osunniran W., Bamigboye M., and Akinremi C. (2012). Metal based antiparasitic drug: synthesis, analysis and biological potency.. Poster Presentation at the 40th Conference on Coordination Chemistry- ICCC 40, Valencia, Spain, September 9-13, 2012
A.C. Tella, J.A.Obaleye and G.K. Obiyenwa (2011). Spectrophotometric study of stability constants of dapsone-Cu(II) complex at different temperatures.. Journal of Pharmacy Research, 4(1),241-244
Obaleye J.A. and Obiyenwa G.K. (2011). Some metal complexes of a semisynthetic antibiotic: preparation, characterization, and biological studies.. Procedings of the 34th Annual International Conference of Chemical Society of Nigeria 19th-23rd September, 2011, pp ING077-ING083
Tella A.C., Olabemiwo M.O., Salawu O.M. & Obiyenwa G.K. (2010). Developingaspectrophotometric method for the estimation of albendazole in solid andsuspension forms.. International Journal of Physical Sciences 5(4), 379-382
A. C. Tella, O.M. Olabemiwo, G.K. Obiyenwa & M.O. Salawu (2010). A method of assay for the estimation of sulphadimidine in tablets. African Scientist 11(3),189-193
Tella A.C and Obiyenwa G.K. (2008). A simple method of assay for the estimation of sulphadimidine in tablets.. Proceedings of the 1st Chemical Society of Nigeria Kwara State Chapter Conference1st& 2nd July, 2008, pp 110-113
2002 Federal Government Scholarship Programme for Postgraduate Student
Department of Chemistry, Faculty of Science, Federal University Lokoja, kogi State.
Email: [email protected]