Skip to main content

Current Resaerch

My earlier published works completed are on molecular systems with at least one unpaired electron-namely free radicals (both organic and inorganic) and transition metal complexes with a d9 and a d1 configuration. My work in general has been directed at solving and obtaining information on three types of problems. These include studies of:

 

  1. Electron Polarization phenomenon in free radicals generated by photolysis of carbonyl compounds and nuclear polarization in diamagnetic products of these free radicals.

 

  1. Chemical reactions of inorganic and organometallic radicals with unsaturated organic compounds resulting in persistent free radicals.

 

  1. Electronic structural determination of inorganic complexes by ESR spectroscopy.

 

While we worked along the three main areas outlined above we also applied ESR spectroscopic technique to some local problems. Our effort of identifying and quantify free radicals in Nigerian processed food, was to enable us study, in collaboration with other experts, any possible relationship between free radicals in our food, the dietary habit of Nigerians and the occurrence of certain types of cancer. The preliminary work on spin-labelled s-hemoglobin was aimed at the development of a powerful and rapid method of screening drugs and chemicals for their anti-sickling properties. Unfortunately, we could not progress further because our ESR spectrometer broke down irreparably and had not been possible to replace the equipment.

 

Since 1982, we began to apply spectroscopic techniques to the problem of environmental pollution occasioned by oil operations in Nigeria. Infrared and electronic absorption spectroscopic techniques have been used to quantify total hydrocarbon and various metals in water, sediment and soil samples collected from operational areas of oil producing, oil refining and oil marketing companies. These studies have been carried out in the content of an integrated multidisciplinary study of environmental pollution involving chemists, botanists, zoologists, microbiologists, plant pathologists, geophysicist and socio-economists. In this respect, I have served as consultant chemist and environmental scientist to:

 

  1. Research planning Institute Inc., Columbia, USA (1982-1985)
  2. Inspectorate Division of NNPC, Lagos (1987-1989)
  3. Engineering and Technical Services Division (ETSD), NNPC, Lagos (1987.1989)
  4. Texaco Oil Petroleum Company of Nigeria, (1993-1994)
  5. Shell Petroleum Development Company of Nigeria, Lagos (1985 to 1999)

 

(b)       Completed

            (i)         A benchmark study on the properties of unsubstituted and some substituted                       polypyroles as component of biosensor. A publication submitted to                                 International Journal of Quantum Chemistry, USA (2015).

            (ii)        Ab initio studies on the molecular properties of para-Nitroaniline and its                             derivatives as non-linear optical materials. A publication submitted to Journal               of Science Research, Faculty of Science, University of Ibadan, Ibadan (2015).

 

(c)        In Progress

 

(i)         Nigeria is the highest producer of cassava tubers in the world. The stem of the cassava plant is used in the propagation of the plant, while the leaves are also eaten as vegetables in some part of Africa. However there is no well documented uses of cassava seeds. Yet each cassava plant produces a sizeable amount of seeds which are invariably wasted when the cassava tuber is harvested.

 

We are currently working to provide answers to some of the following questions:

                        Is the cassava seed edible?

                        What are the chemical composition of the cassava seed?

                        What are the characteristics and uses of cassava seed oil?

 

(ii)        Rural Nigerians depend on kerosene for cooking and lighting. The cost of kerosene has gone up so much that ordinary Nigerians in the rural area, now more and more, are depending on woods and charcoal as alternative sources of fire for cooking. This practice is ecologically unfriendly.

 

We have started looking at the production of biokerosene from Nigerian non-edible vegetable oils, in order to provide an alternative source to hydrocarbon-sourced kerosene.

 

(iii)       We are studying the isolation and characterization of products of photochemical reactions between some silanes and para-quinones in di-tert butyl peroxide. We are hoping that we might be able to produce a polymer which might be useful as photo-electronic sensors.

 

(d)       Dissertation and Thesis

(i)         Application of Electron Spin Resonance Spectroscopy: Spin Adducts of Phenyl t-butyl nitrone and their decomposition. (1973), - A thesis submitted to the Department of Chemistry, Queen’s University, for the degree of Master of Science.

(ii)        Photochemically Induced Magnetic Polarization: Studies of para-quinine systems (1976), - A thesis submitted for the degree of Doctor of Philosophy, Queen’s University, Kingston, Ontario, Canada.