Chemistry
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The potential of plant polyphenols as natural photostable sunscreen active ingredients.
(2022)Protection from the sun dates to prehistoric times as a measure against the deleterious effects of solar ultraviolet (UV) radiation. Overexposure to this harmful UV radiation is a leading cause of pathological changes of ... -
Influence of alkali metal promotion on the properties of co-precipitated Cu/Zn/Cr higher alcohol synthesis.
(1994)Abstract available in PDF. -
Phytochemical and antiplasmodial studies of five ethnobotanically-selected South African medicinal plants.
(2019)Vachellia xanthophloea, Euclea natalensis, Ozoroa obovata, Gardenia thunbergia, and Pappea capensis are traditionally used to treat malaria/fever in Africa. Previous studies showed that the extracts of V. xanthophloea, G. ... -
Synthesis of non-water-soluble and water-soluble Pd(II) complexes as catalysts for methoxycarbonylation reaction of olefins.
(2021)The treatments of (E)-2-(((2-methoxyethyl)imino)methyl)phenol (L1H), (E)-2-(((2-hydroxyethyl)imino)methyl)phenol (L2H) (E)-3,5-di-tert-butyl-2-(((2-hydroxyethyl)imino)methyl)phenol (L3H) with Pd(OAc)2 afforded the corresponding ... -
Synthesis, characterisation and biological studies of copper(I) and copper(II) pyridinyl Schiff base complexes.
(2019)Coordination complexes have numerous applications ranging from industrial processes to pharmaceuticals. Schiff base ligands, along with copper(I) and copper(II) metal complexes have been investigated and reported in the ... -
Synthesis, morphological, optical and photocatalytic studies of lead sulfide and tin sulfide nanoparticles.
(2022)Five dithiocarbamate ligands were synthesized from morpholine, thiomorpholine, N-(2-hydroxyethyl)aniline, 4-methylpiperidine, and 4-benzylpiperidine. Five lead(II) dithiocarbamate and five tin(II) dithiocarbamate complexes ... -
Heteroleptic copper (II) chemotherapeutic agents.
(2019)In this study, a range of heteroleptic copper(II) chelates were synthesized as chemotherapeutic agents. Two primary heteroleptic copper(II) chelates, [Cu(L)(H2O)2]NO3 and [Cu(L1)(H2O)2]NO3 were successfully synthesized and ... -
Structure-activity relationship studies of anti-diabetic dioxidovanadium(V) benzimidazole complexes.
(2022)Organovanadium compounds have been widely investigated for the potential use in Diabetes Mellitus. However, most of these metal complexes has failed during studies using in vivo Streptozotocin (STZ)-diabetic rat models and ... -
Synthesis, characterization and the antimicrobial effect of diiodothiocyanate (I₂SCN-) on escherichia coli and enterococcus faecalis.
(2022)The threat posed by antimicrobial resistance is rising to dangerously high levels worldwide. However, chemical species such as iodide-based interpseudohalogen are attracting attention as potential new class of antimicrobials. ... -
Tuning the steric and electronic parameters of mixed-donor palladium(II) complexes: coordination chemistry, substitution kinetics and biological activities.
(2021)Reactions of 2,6-bis(benzimidazol-2-yl)pyridine (L1), 2,6-bis(benzoxazol-2-yl)pyridine (L2), and 2,6-bis(benzothiazol-2-yl)pyridine (L3) with [Pd(NCMe)2Cl2] in the presence of NaBF4 afforded the corresponding Pd(II) ... -
Method development and application: solid phase extraction (SPE), ultrasonic extraction (UE) and soxhlet extraction (SE) for the determination of antiretroviral drugs in river water, wastewater, sludge, soil and sediment.
(2022)Antiretroviral drugs (ARVs) are a group of pharmaceuticals that have been recognized to be present in the environment and most of them have been reported to be environmentally persistent. However, most studies have ... -
Determination of metal concentrations in water, soil, and sediment in the KwaZulu-Natal province: comparison of digestion methods, environmental concerns, and human health risk assessment.
(2022)Metals are environmental natural elements. However, due to the alteration of their geological process and biochemical equilibrium as a result of the metals wide usage for human purpose, they have become a source of ... -
Identification of triterpenoids in Brachylaena discolor DC, a plant with antidiabetic activity.
(2019)In recent times, metabolic diseases such as diabetes and hypertension have become a huge burden in populations around the world. Among these diseases, the number of diabetes mellitus cases have been increasing at an alarming ... -
Methods development and application for triazine herbicides determination in fruits and vegetables: comparing the significance of solid phase extraction, QuEChERS extraction, and ultrasonic solvent extraction techniques.
(2021)This work reports on a quick, easy, cheap, effective, rugged, and safe (QuEChERS), solid phase extraction (SPE) and ultrasonic solvent extraction (USE), combined with liquid chromatography-photodiode array detection ... -
Structural and ethylene oligomerization studies of homogeneous and immobilized N^O-donor iron(II), nickel(II) and cobalt(II) catalysts.
(2021)Abstract available in PDF. -
Kumada and liebeskind-srogl coupling of aryl thiosulfonates as electrophilic coupling partners in the synthesis of biaryls.
(2021)The need and desire for versatility and diversity in cross-coupling reactions was the drive for the studies conducted in this thesis. Traditionally, transition-metal catalyzed crosscoupling reactions have heavily relied ...
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