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2015 Research Publications

 Achadu, O.J. and Nyokong, T.

Achadu, O.J. and Nyokong, T. (2015) Interaction of Graphene Quantum Dots with 4-Acetamido-2,2,6,6-Tetramethylpiperidine-Oxyl Free Radicals: A Spectroscopic and Fluorimetric Study. JOURNAL OF FLUORESCENCE. 2015 (2015). p.1-13.

Bankole, O.M. and Nyokong, T.

Bankole, O.M. and Nyokong, T. (2015) Mercaptopyridine-substituted indium, zinc, and metal-free phthalocyanines: nonlinear optical studies in solution and on polymer matrices. JOURNAL OF COORDINATION CHEMISTRY. 68 (20). p.3727-3740.

Bankole, O.M. and Nyokong, T. (2015) Photophysical and nonlinear optical studies of tetraakynyl zincphthalocyanine and its "clicked" analogue. JOURNAL OF MOLECULAR STRUCTURE. 1089 (2015). p.107-115.

Bankole, O.M., Britton, J. and Nyokong, T.

Bankole, O.M., Britton, J. and Nyokong, T. (2015) Photophysical and non-linear optical behavior of novel tetra alkynyl terminated indium phthalocyanines: Effects of the carbon chain length. POLYHEDRON. 88 (2015). p.73-80.

Bromley, C.L.

Bromley, C.L., Raab, A., Beukes, D., Feldman, J., Jaspars, M. and Davies-Coleman, M.T. (2015) MEETING ABSTRACT: Detection of halogenated tryamine and tyrosine derivatives in extracts of Algoa Bay ascidians. PLANTA MEDICA. 81 (2015). p.29.

Chigome, S. and Torto, N.

De Almeida, L.K.S., Chigome, S., Torto, N., Frost, C.L. and Pletschke, B.I. (2015) A novel colorimetric sensor strip for the detection of glyphosate in water. SENSORS AND ACTUATORS B-CHEMICAL. 206 (2015). p.357-363.

Darko, G. and Torto, N.

Darko, G., Goethals, A., Torto, N. and De Clerck, K. (2015) Steady state electrospinning of uniform polyethersulfone nanofibers using a non-heated solvent mixture. Applied Nanoscience. 2015 (2015). p.1-9.

D'Souza, S., George, R. and Nyokong, T.

D'Souza, S., George, R., Goksel, M., Atilla, D., Durmus, M. and Nyokong, T. (2015) Enhanced triplet state yields in aqueous media of asymmetric zinc phthalocyanines when conjugated to silver nanoflowers. POLYHEDRON. 100 (2015). p.296-302.

D'Souza, S., Mashazi, P., Britton, J. and Nyokong, T.

D'Souza, S., Mashazi, P., Britton, J. and Nyokong, T. (2015) Effects of differently shaped silver nanoparticles on the photophysics of pyridylsulfanyl-substituted phthalocyanines. POLYHEDRON. 99 (2015). p.112-121.

D'Souza, S., Moeno, S. and Nyokong, T.

D'Souza, S., Moeno, S. and Nyokong, T. (2015) Effects of ZnO nanohexagons and nanorods on the fluorescence behavior of metallophthalocyanines. POLYHEDRON. 85 (2015). p.476-481.

D'Souza, S., Ogbodu, R.O. and Nyokong, T.

D'Souza, S., Ogbodu, R.O. and Nyokong, T. (2015) The effects of gold coated and uncoated zinc oxide nanohexagons on the photophysicochemical properties of the low symmetry zinc phthalocyanine. JOURNAL OF MOLECULAR STRUCTURE. 1099 (2015). p.551-559.

Faridoon, H.

Ikram, M., Rehman, S., Khan, A., Baker, R.J., Hofer, T.S., Subhan, F., Qayum, M., Faridoon, H. and Schulzke, C. (2015) Synthesis, characterization, antioxidant and selective xanthine oxidase inhibitory studies of transition metal complexes of novel amino acid bearing Schiff base ligand. INORGANICA CHIMICA ACTA. 428 (2015). p.117-126.

Faridoon, H., Olomola, T.O., Tukulula, M., Klein, R. and Kaye, P.T.

Faridoon, H., Olomola, T.O., Tukulula, M., Klein, R. and Kaye, P.T. (2015) Strong base- or acid-mediated chemoselectivity shifts in the synthesis of 2H-chromene or coumarin derivatives from common Baylis-Hillman adducts. TETRAHEDRON. 71 (2015). p.4868-4873.

Fashina, A. and Nyokong, T.

Fashina, A. and Nyokong, T. (2015) Nonlinear optical responses of tetra and mono substituted zinc phthalocyanine complexes. JOURNAL OF LUMINESCENCE. 167 (2015). p.71-79.

Fashina, A., Amuhaya, E.K. and Nyokong, T.

Fashina, A., Amuhaya, E.K. and Nyokong, T. (2015) A comparative photophysicochemical study of phthalocyanines encapsulated in core-shell silica nanoparticles. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY. 137 (2015). p.294-299.

Fashina, A., Amuhaya, E.K. and Nyokong, T. (2015) Photophysical studies of newly derivatized mono substituted phthalocyanines grafted onto silica nanoparticles via click chemistry. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY. 140 (2015). p.256-264.

Fayemi, O.E., Antunes, E.M. and Nyokong, T.

Fayemi, O.E., Ogunlaja, S.A., Antunes, E.M., Nyokong, T. and Tshentu, Z.R. (2015) The Development of Palladium(II)-Specific Amine-Functionalized Silica-Based Microparticles: Adsorption and Column Separation Studies. SEPARATION SCIENCE AND TECHNOLOGY. 50 (2015). p.1497-1506.

George, R.C. and Nyokong, T.

George, R.C., Falgenhauer, J., Geis, C., Nyokong, T. and Schlettwein, D. (2015) Characterization of porphyrin nanorods on fluoride doped tin oxide glass sheet. JOURNAL OF PORPHYRINS AND PHTHALOCYANINES. 19 (2015). p.1147-1158.

Gundhla, I.Z. and Walmsley, R.S.

Gundhla, I.Z., Walmsley, R.S., Ugirinema, V., Mnonopi, N.O., Hosten, E.C., Betz, R., Frost, C.L. and Tshentu, Z.R. (2015) pH-metric chemical speciation modeling and studies of in vitro antidiabetic effects of bis[(imidazolyl)carboxylato]oxidovanadium(IV) complexes. JOURNAL OF INORGANIC BIOCHEMISTRY. 145 (2015). p.11-18.

Ifegwu, O.C. and Torto, N.

Ifegwu, O.C., Anyakora, C. and Torto, N. (2015) Nylon 6--Gold Nanoparticle Composite Fibers for Colorimetric Detection of Urinary 1-Hydroxypyrene. Journal of Applied Spectroscopy. 82 (2). p.260-265.

Kempgens, P.

Kempgens, P. (2015) Semi-analytical description of the S=9/2 quadrupole nutation NMR experiment: multinuclear application to 113In and 115In in indium phosphide. MAGNETIC RESONANCE IN CHEMISTRY. 53 (2015). p.261-266.

Khanye, S.D.

Veale, C.G.L., Edkins, A.L., De La Mare, J.A., de Kock, C., Smith, P.J. and Khanye, S.D. (2015) Facile synthesis and biological evaluation of assorted indolyl-3-amides and esters from a single, stable carbonyl nitrile intermediate. TETRAHEDRON LETTERS. 56 (2015). p.1860-1864.

Khoza, P. and Nyokong, T.

Khoza, P. and Nyokong, T. (2015) Visible light transformation of Rhodamine 6G using tetracarbazole zinc phthalocyanine when embedded in electrospun fibers and in the presence of ZnO and Ag particles. JOURNAL OF COORDINATION CHEMISTRY. 68 (7). p.1117-1131.

 Khoza, P. and Nyokong, T. (2015) Photocatalytic behaviour of zinc tetraamino phthalocyanine-silver nanoparticles immobilized on chitosan beads. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL. 399 (2015). p.25-32.

 Krause, R.W.M.

 Kuvarega, A.T., Krause, R.W.M. and Mamba, B.B. (2015) Evaluation of the simulated solar light photocatalytic activity of N, Ir co-doped TiO2 for organic dye removal from water. APPLIED SURFACE SCIENCE. 329 (2015). p.127-136.

 Ledwaba, M., Masilela, N., Nyokong, T. and Antunes, E.M.

 Ledwaba, M., Masilela, N., Nyokong, T. and Antunes, E.M. (2015) Surface modification of silica-coated gadolinium oxide nanoparticles with zinc tetracarboxyphenoxy phthalocyanine for the photodegradation of Orange G. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL. 403 (2015). p.64-76.

 Litwinski, C.

 Bornyakov, V.G., Ilgenfritz, E.M., Litwinski, C., Muller-Preussker, M. and Mitrjushkin, V.K. (2015) Landau gauge ghost propagator and running coupling in SU (2) lattice gauge theory. PHYSICAL REVIEW D. 92 (2015). p.1-10.

 Lobb, K.A.

 Odame, F., Hosten, E.C., Betz, R., Lobb, K.A. and Tshentu, Z.R. (2015) Benzimidazole or Diamide From a Reaction of Diamines and Carboxylic Acids or Acid Chlorides: Crystal Structures and Theoretical Studies. ACTA CHIMICA SLOVENICA. 62 (2015). p.986-994.

 Odame, F., Hosten, E.C., Betz, R., Lobb, K.A. and Tshentu, Z.R. (2015) Characterization of some amino acid derivatives of benzoyl isothiocyanate: Crystal structures and theoretical prediction of their reactivity. JOURNAL OF MOLECULAR STRUCTURE. 1099 (2015). p.38-48.

 Hatherley, R., Brown, D.K., Musyoka, T.M., Penkler, D.L., Faya, N., Lobb, K.A. and Tastan Bishop, O. (2015) SANCDB:  a South African natural compound database. Journal of Cheminformatics. 7 (29). p.1-9.

 Lobb, K.A. (2015) Isomerization of the 2-Norbornyl Carbocation. EUROPEAN JOURNAL OF ORGANIC CHEMISTRY. 2015 (2015). p.5370-5380.

 Mack, J.

 Xue, Z., Wang, Y., Mack, J., Fang, Y., Ou , Z., Zhu, W. and Kadish, K. (2015) Synthesis and Characterization of Palladium(II) Complexes of meso-Substituted [14]Tribenzotriphyrin(2.1.1). INORGANIC CHEMISTRY. 54 (2015). p.11852-11858.

 Xue, Z., Wang, Y., Mack, J., Zhu, W. and Ou , Z. (2015) Synthesis, Characterization, and Electrochemistry of the Manganese(I) Complexes of meso-Substituted [14] Tribenzotriphyrins (2.1.1). CHEMISTRY-A EUROPEAN JOURNAL. 21 (2015). p.2045-2051.

 Wu, F., Liu, J., Mishra, P., Komeda, T., Mack, J., Chang, Y., Kobayashi, N. and Shen, Z. (2015) Modulation of the molecular spintronic properties of adsorbed copper corroles. Nature Communications. 6 (7547). p.1-8.

 Wang, S., Liu, H., Mack, J., Tian, J., Zou, B., Lu , H., Li, Z., Jiang, J. and Shen, Z. (2015) A BODIPY-based 'turn-on'' fluorescent probe for hypoxic cell imaging. CHEMICAL COMMUNICATIONS. 51 (2015). p.13389-13392.

 Mack, J. and Nyokong, T.

 Gai, L., Mack, J., Lu , H., Nyokong, T., Li , Z., Kobayashi, N. and Shen, Z. (2015) Organosilicon compounds as fluorescent chemosensors for fluoride anion recognition. COORDINATION CHEMISTRY REVIEWS. 285 (2015). p.24-51.

 Tasso, T.T., Taniyuki, F., Mack, J., Nyokong, T. and Kobayashi, N. (2015) Synthesis and Photophysical Investigation of Tetraazaporphyrin Substituted with Aggregation-Induced Emission (AIE) Active Moieties. EUROPEAN JOURNAL OF INORGANIC CHEMISTRY. 2015 (2015). p.5516-5522.

 Mack, J., Kubheka, G. and Nyokong, T.

 Chen, W., Zhang, J., Mack, J., Kubheka, G., Nyokong, T. and Shen, Z. (2015) Corrole-BODIPY conjugates: enhancing the fluorescence and phosphorescence of the corrole complex via efficient through bond energy transfer. RSC Advances. 5 (2015). p.50962-50967.

 Mack, J., Majumdar, P. and Nyokong, T.

 Wang, B.B., Zuo, H., Mack, J., Majumdar, P., Nyokong, T., Chan, K.S. and Shen, Z. (2015) Optical properties and electronic structures of axially-ligated group 9 porphyrins. JOURNAL OF PORPHYRINS AND PHTHALOCYANINES. 19 (2015). p.973-982.

 Mack, J., Stone, J. and Nyokong, T.

 Liang, X., Xu, L., Li, M., Mack, J., Stone, J., Nyokong, T., Jiang, Y., Kobayashi, N. and Zhu, W. (2015) Facile synthesis, spectroscopic and electrochemical properties, and theoretical calculations of porphyrin dimers with a bridging amide-bonded xanthene moiety. JOURNAL OF PORPHYRINS AND PHTHALOCYANINES. 19 (2015). p.819-829.

 Mack, J., Wildervanck, M. and Nyokong, T.

 Jiang, Y., Li, M., Liang, X., Mack, J., Wildervanck, M., Nyokong, T., Qin, M. and Zhu, W. (2015) Lipophilic M(α,α'-OC5H11)8phthalocyanines (M = H2 and Ni(II)): synthesis, electronic structure, and their utility for highly efficient carbonyl reductions. DALTON TRANSACTIONS. 44 (2015). p.18237-18246.

 Majumdar, P., Mack, J. and Nyokong, T.

 Majumdar, P., Mack, J. and Nyokong, T. (2015) Synthesis, characterization and photophysical properties of an acenaphthalene fused-ring-expanded NIR absorbing aza-BODIPY dye. RSC Advances. 5 (2015). p.78253-78258.

 Managa, M. and Nyokong, T.

 Managa, M. and Nyokong, T. (2015) Photodynamic antimicrobial chemotherapy activity of gallium tetra-(4-carboxyphenyl) porphyrin when conjugated to differently shaped platinum nanoparticles. JOURNAL OF MOLECULAR STRUCTURE. 1099 (2015). p.432-440.

 Managa, M., Amuhaya, E.K. and Nyokong, T.

 Managa, M., Amuhaya, E.K. and Nyokong, T. (2015) Photodynamic antimicrobial chemotherapy activity of (5,10,15,20-tetrakis(4-(4- carboxyphenycarbonoimidoyl)phenyl)porphyrinato) chloro gallium(III). SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY. 151 (2015). p.867-874.

 Manyeruke, M.H., Olomola, T.O., Majumder, S., Isaacs, M., Klein, R. and Kaye, P.T.

 Manyeruke, M.H., Olomola, T.O., Majumder, S., Abrahams, S., Isaacs, M., Mautsa, N., Mosebi, S., Mnkandhla, D., Hewer, R., Hoppe, H.C., Klein, R. and Kaye, P.T. (2015) Synthesis and evaluation of 3-hydroxy-3-phenylpropanoate ester-AZT conjugates as potential dual-action HIV-1 Integrase and Reverse Transcriptase inhibitors. BIOORGANIC & MEDICINAL CHEMISTRY. 23 (2015). p.7521-7528.

 Maringa, A., Mashazi, P. and Nyokong, T.

 Maringa, A., Mashazi, P. and Nyokong, T. (2015) Electrocatalytic activity of bimetallic Au-Pd nanoparticles in the presence of cobalt tetraaminophthalocyanine. JOURNAL OF COLLOID AND INTERFACE SCIENCE. 440 (2015). p.151-161.

 Mkhize, C., Britton, J., Mack, J. and Nyokong, T.

 Mkhize, C., Britton, J., Mack, J. and Nyokong, T. (2015) Optical limiting and singlet oxygen generation properties of phosphorus triazatetrabenzcorroles. JOURNAL OF PORPHYRINS AND PHTHALOCYANINES. 19 (2015). p.192-204.

 Modisha, P., Antunes, E.M. and Nyokong, T.

 Modisha, P., Antunes, E.M. and Nyokong, T. (2015) Photophysical properties of zinc tetracarboxy phthalocyanines conjugated to magnetic nanoparticles. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY. 15 (5). p.3688-3696.

Mthethwa, T. and Nyokong, T.

Mthethwa, T. and Nyokong, T. (2015) Fluorescence behavior and singlet oxygen generating abilities of aluminum phthalocyanine in the presence of nisotropic gold nanoparticles. JOURNAL OF LUMINESCENCE. 157 (2015). p.207-214.

Mthethwa, T. and Nyokong, T. (2015) Photoinactivation of Candida albicans and Escherichia coli using aluminium phthalocyanine on gold nanoparticles. PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES. 14 (2015). p.1346-1356.

Mugadza, T., Antunes, E.M. and Nyokong, T.

Mugadza, T., Antunes, E.M. and Nyokong, T. (2015) Synthesis of single-walled carbon nanotubes by the pyrolysis of a compression activated iron(II) phthalocyanine/phthalocyanine metal-free derivative/ferric acetate mixture. JOURNAL OF CHEMICAL SCIENCES. 127 (7). p.1191-1199.

Ngubeni, G.N., Britton, J., Mack, J., Nyokong, T. and Khene, S.

Ngubeni, G.N., Britton, J., Mack, J., New, E., Hancox, I., Walker, M., Nyokong, T., Jones, T.S. and Khene, S. (2015) Spectroscopic and nonlinear optical properties of the four positional isomers of 4α-(4-tert- butylphenoxy)phthalocyanine. Journal of Materials Chemistry C. 3 (2015). p.10705-10714.

Nxele, S.R., Mashazi, P. and Nyokong, T.

Nxele, S.R., Mashazi, P. and Nyokong, T. (2015) Electrode Modification Using Alkynyl Substituted Fe(II) Phthalocyanine via Electrografting and Click Chemistry for Electrocatalysis. ELECTROANALYSIS. 27 (2015). p.2468-2478.

Nyokong, T.

Adegoke, O., Nyokong, T. and Forbes, P.B.C. (2015) Optical properties of water-soluble L-cysteine-capped alloyed CdSeS quantum dot passivated with ZnSeTe and ZnSeTe/ZnS shells. OPTICAL MATERIALS. 46 (2015). p.548-554.

Adegoke, O., Nyokong, T. and Forbes, P.B.C. (2015) Structural and optical properties of alloyed quaternary CdSeTeS core and CdSeTeS/ZnS core-shell quantum dots. JOURNAL OF ALLOYS AND COMPOUNDS. 645 (2015). p.443-449.

Obuah, C., Lochee, Y., Jordaan, J.H.L., Otto, D.P., Nyokong, T. and Darkwa, J. (2015) (Ferrocenylpyrazolyl)zinc(II) benzoates as catalysts for the ring opening polymerization of ?-caprolactone. POLYHEDRON. 90 (2015). p.154-164.

Nyoni, S. and Nyokong, T.

Nyoni, S. and Nyokong, T. (2015) Comparative electrocatalytic studies of nanocomposites of mixed and covalently linked multiwalled carbon nanotubes and 4-(4,6-diaminopyrimidin-2-ylthio) phthalocyaninato cobalt(II). POLYHEDRON. 98 (2015). p.47-54.

Nyoni, S., Mashazi, P. and Nyokong, T.

Nyoni, S., Mashazi, P. and Nyokong, T. (2015) Iodine-Doped Cobalt Phthalocyanine Supported on Multiwalled Carbon Nanotubes for Electrocatalysis of Oxygen Reduction Reaction. ELECTROANALYSIS. 27 (2015). p.1176-1187.

Ogbodu, R.O.

Ogbodu, R.O., Omorogie, M.O., Unuabonah, E.I. and Babalola, J.O. (2015) Biosorption of Heavy Metals from Aqueous  by Parkia biglobosa Biomass: Equilibrium, Kinetics, and Thermodynamic Studies. Environmental Progress & Sustainable Energy. 34 (6). p.1694-1704.

Ogbodu, R.O. and Nyokong, T.

Ogbodu, R.O. and Nyokong, T. (2015) Enhanced triplet state parameters for zinc carboxy phenoxy phthalocyanine following conjugation to ascorbic acid: Effects of adsorption on single walled carbon nanotubes. POLYHEDRON. 90 (2015). p.175-182.

Ogbodu, R.O. and Nyokong, T. (2015) The effect of ascorbic acid on the photophysical properties and photodynamic therapy activities of zinc phthalocyanine-single walled carbon nanotube conjugate on MCF-7 cancer cells. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY. 151 (2015). p.174-183.

Ogbodu, R.O., Ndhundhuma, I., Karsten, A. and Nyokong, T. (2015) Photodynamic therapy effect of zinc monoamino phthalocyanine--folic acid conjugate adsorbed on single walled carbon nanotubes on melanoma cells. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY. 137 (2015). p.1120-1125.

Ogbodu, R.O., Limson, J., Prinsloo, E. and Nyokong, T. (2015) Photophysical properties and photodynamic therapy effect of zinc phthalocyanine-spermine-single walled carbon nanotube conjugate on MCF-7 breast cancer cell line. SYNTHETIC METALS. 204 (2015). p.122-132.

Ogbodu, R.O., Amuhaya, E.K., Mashazi, P. and Nyokong, T.

Ogbodu, R.O., Amuhaya, E.K., Mashazi, P. and Nyokong, T. (2015) Photophysical properties of zinc phthalocyanine-uridine single walled carbon nanotube - conjugates. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY. 149 (2015). p.231-239.

Olalekan, E.T. and Watkins, G.M.

Olalekan, E.T., Adejoro, I.A., Van Brecht, B. and Watkins, G.M. (2015) Crystal structures, spectroscopic and theoretical study of novel Schiff bases of 2-(methylthiomethyl)anilines. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY. 139 (2015). p.385-295.

Olomola, T.O., Klein, R. and Kaye, P.T.

Olomola, T.O., Klein, R., Caira , M.R. and Kaye, P.T. (2015) Elucidating Latent Mechanistic Complexity in Competing Acid-Catalyzed Reactions of Salicylaldehyde-Derived Baylis-Hillman Adducts. JOURNAL OF ORGANIC CHEMISTRY. 2015 (2015). p.1-12.

Oluwole, D.O. and Nyokong, T.

Oluwole, D.O. and Nyokong, T. (2015) Physicochemical behavior of nanohybrids of mono and tetra substituted carboxyphenoxy phthalocyanine covalently linked to GSH-CdTe/CdS/ZnS quantum dots. POLYHEDRON. 87 (2015). p.8-16.

Oluwole, D.O. and Nyokong, T. (2015) Comparative photophysicochemical behavior of nanoconjugates of indium tetracarboxyphenoxy phthalocyanines covalently linked to CdTe/ZnSe/ZnO quantum dots. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY. 312 (2015). p.34-44.

Oluwole, D.O., Britton, J., Mashazi, P. and Nyokong, T.

Oluwole, D.O., Britton, J., Mashazi, P. and Nyokong, T. (2015) Synthesis and photophysical properties of nanocomposites of aluminum tetrasulfonated phthalocyanine covalently linked to glutathione capped CdTe/CdS/ZnS quantum dots. SYNTHETIC METALS. 205 (2015). p.212-221.

Osifeko, O.L. and Nyokong, T.

Osifeko, O.L., Durmus, M. and Nyokong, T. (2015) Physicochemical and photodynamic antimicrobial chemotherapy studies of mono- and tetra-pyridyloxy substituted indium(III) phthalocyanines. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY. 301 (2015). p.47-54.

Patnala, S.

Patnala, S. and Kanfer, I. (2015) Medicinal use of Sceletium:  Characterization of Phytochemical Components of Sceletium Plant Species using HPLC with UV and Electrospray Ionization - Tandem Mass Spectroscopy. JOURNAL OF PHARMACY AND PHARMACEUTICAL SCIENCES. 18 (4). p.414-423.

Pule, B.O., Degni, S. and Torto, N.

Pule, B.O., Degni, S. and Torto, N. (2015) Electrospun fibre colorimetric probe based on gold nanoparticles for on-site detection of 17ß-estradiol associated with dairy farming effluents. WATER SA. 41 (1). p.27-32.

Sanusi, K. and Nyokong, T.

Sanusi, K. and Nyokong, T. (2015) Enhanced optical limiting behaviour of indium phthalocyanine derivatives when in solution or embedded in poly(acrylic acid) or poly(methyl methacrylate) polymers. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY. 303-304 (2015). p.44-52.

Sanusi, K., Britton, J. and Nyokong, T.

Zongo, S., Sanusi, K., Britton, J., Mthunzi, P., Nyokong, T., Maaza, M. and Sahraoui, B. (2015) Nonlinear optical properties of natural laccaic acid dye studied using Z-scan technique. OPTICAL MATERIALS. 46 (2015). p.270-275.

Sanusi, K., Stone, J. and Nyokong, T.

Sanusi, K., Stone, J. and Nyokong, T. (2015) Nonlinear optical behaviour of indium-phthalocyanine tethered to magnetite or silica nanoparticles. NEW JOURNAL OF CHEMISTRY. 39 (2015). p.1665-1677.

Sekhosana, K.E. and Nyokong, T.

Sekhosana, K.E. and Nyokong, T. (2015) The nonlinear absorption in new lanthanide double decker pyridine-based phthalocyanines in solution and thin films. OPTICAL MATERIALS. 47 (2015). p.211-218.

Sekhosana, K.E., Amuhaya, E.K. and Nyokong, T.

Sekhosana, K.E., Amuhaya, E.K. and Nyokong, T. (2015) Nanosecond nonlinear optical limiting properties of new trinuclear lanthanide phthalocyanines in solution and as thin films. POLYHEDRON. 85 (2015). p.347-354.

Sekhosana, K.E., Amuhaya, E.K., Khene, S. and Nyokong, T.

Sekhosana, K.E., Amuhaya, E.K., Khene, S. and Nyokong, T. (2015) Synthesis, photophysical and nonlinear optical behavior of neodymium based trisphthalocyanine. INORGANICA CHIMICA ACTA. 426 (2015). p.221-226.

Siwe Noundou, X. and Krause, R.W.M.

Siwe Noundou, X., Krause, R.W.M., van Vuuren, S.F., Ndinteh, D.T. and Olivier, D.K. (2015) Antibacterial effects of Alchornea cordifolia (Schumach. and Thonn.) Müll. Arg extracts and compounds on gastrointestinal, skin, respiratory and urinary tract pathogens. JOURNAL OF ETHNOPHARMACOLOGY. 2015 (2015). p.1-7.

Taylor, J., Litwinski, C., Nyokong, T. and Antunes, E.M.

Taylor, J., Litwinski, C., Nyokong, T. and Antunes, E.M. (2015) Synthesis and characterization of Na(Y,Gd)F4 upconversion nanoparticles and an investigation of their effects on the photophysical properties of an unsubstituted tetrathiophenoxy phthalocyanine. JOURNAL OF NANOPARTICLE RESEARCH. 17 (2015). p.1-18.

Taylor, J., Litwinski, C., Nyokong, T. and Antunes, E.M. (2015) Fluorescence Behaviour of an Aluminium Octacarboxy Phthalocyanine - NaYGdF4:Yb/Er Nanoparticle Conjugate. JOURNAL OF FLUORESCENCE. 25 (2015). p.489-501.

Torto, N.

Koosaletse-Mswela, P., Przybylowicz, W.J., Cloete, K.J., Barnabas, A.D., Torto, N. and Mesjasz-Przybylowicz, J. (2015) Quantitative mapping of elemental distribution in leaves of the metallophytes Helichrysum candolleanum, Blepharis aspera, and Blepharis diversispina from Selkirk Cu--Ni mine, Botswana. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS. 363 (2015). p.188-193.

Torto, N., Chigome, S. and Mothibedi, K.

Atlabachew, M., Torto, N., Chandravanshi, B.S., Redi-Abshiro, M., Chigome, S., Mothibedi, K. and Combrinck, S. (2015) A (-)-norephedrine-based molecularly imprinted polymer for the solid-phase extraction of psychoactive phenylpropylamino alkaloids from Khat (@@Catha edulis## Vahl.Endl.) chewing leaves. BIOMEDICAL CHROMATOGRAPHY. 2015 (2015). p.1-9.

 Tshangana, C. and Nyokong, T.

Tshangana, C. and Nyokong, T. (2015) The Photophysical Properties of Multi-Functional Quantum Dots-Magnetic Nanoparticles-IndiumOctacarboxyphthalocyanine Nanocomposite. JOURNAL OF FLUORESCENCE. 25 (2015). p.199-210.

Tshangana, C. and Nyokong, T. (2015) Photophysical properties gallium octacarboxy phthalocyanines conjugated to CdSe@ZnS quantum dots. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY. 151 (2015). p.397-404.

Tshangana, C. and Nyokong, T. (2015) Improved triplet state parameters for indium octacarboxy phthalocyanines when conjugated to quantum dots and magnetite nanoparticles. JOURNAL OF MOLECULAR STRUCTURE. 1089 (2015). p.161-169.

Veale, C.G.L., Young, R.M. and Lobb, K.A.

Veale, C.G.L., Zoraghi, R., Young, R.M., Morrison, J.P., Pretheeban, M., Lobb, K.A., Reiner, N.E., Andersen, R.J. and Davies-Coleman, M.T. (2015) Synthetic Analogues of the Marine Bisindole Deoxytopsentin: Potent Selective Inhibitors of MRSA Pyruvate Kinase. JOURNAL OF NATURAL PRODUCTS. 78 (2015). p.355-362.

Watkins, Z., Taylor, J., D'Souza, S., Britton, J. and Nyokong, T.

Watkins, Z., Taylor, J., D'Souza, S., Britton, J. and Nyokong, T. (2015) Fluorescence Behaviour and Singlet Oxygen Production of Aluminium Phthalocyanine in the Presence of Upconversion Nanoparticles. JOURNAL OF FLUORESCENCE. 25 (2015). p.1417-1429.

Young, R.M., Adendorff, M.R. and Davies-Coleman, M.T.

Young, R.M., Adendorff, M.R., Wright, A.D. and Davies-Coleman, M.T. (2015) Antiplasmodial activity: The first proof of inhibition of heme crystallization by marine isonitriles. EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY. 93 (2015). p.373-380.

Peer-reviewed Proceedings

Krause, R.W.M.

Bambo, M.F., Moutloali, R.M. and Krause, R.W.M. Polymer Nanocomposite of PVDF/Organoclay-Copper Nanoparticles hybrid: Synthesis and Characterization. 7th International Symposium on Macro- and Supramolecular Architechtures and Materials. Emperor's Palace Convention Centre, Johannesburg. South Africa. November 2014.

Ngomane, N. and Krause, R.W.M.

Ngomane, N., Torto, N., Krause, R.W.M. and Vilakazi, S. A colormetric probe for dopamine based on fold nanoparticles-electrospun nanofibre composite. 7th International Symposium On Macro- and Supramolecular Architechtures and Materials. Emperor's Palace Convention Centre, Johannesburg. South Africa. November 2014.

2014 Research Publications

1. Phumelele Kleyi, Carminta Frost, Zenixole Tshentu, Nelson Torto. Electrospun nylon 6 nanofibers incorporated with 2-substituted N-alkylimidazoles and their silver(I) complexes for antimicrobial applications, Journal of Applied Polymer Science, 131(2), 2014, 39783.


2. A.S. Ogunlaja, O.S. Alade, E.O. Odebunmi, A. Majavu, N. Torto and Z.R. Tshentu, The ratios of vanadium-to-nickel and phenanthrene-to-dibenzothiophene as means of identifying petroleum source and classification of Nigeria crude oils. Petroleum Science and Technology, 32(19), 2014, 2283-2291.


3. Adeniyi S. Ogunlaja, Carol du Sautoy, Nelson Torto, Zenixole R. Tshentu, Design, fabrication and evaluation of intelligent sulfone-selective polybenzimidazole nanofibers. Talanta, 126, 2014, 61–72.


4. Adeniyi S. Ogunlaja, Matthew J. Coombes, Nelson Torto, Zenixole R. Tshentu, The adsorptive extraction of oxidised sulfur-containing compounds from fuels by using molecularly imprinted chitosan materials. Reactive and Functional Polymers 81, 2014, 61-76.


5.    Joyce D. Sewry, Sarah R. Glover, Timothy G. Harrison, Dudley E.
Shallcross, Kenneth M. Ngcoza. "Offering community engagement activities to
increase chemistry knowledge and confidence for teachers and students" J.
Chem. Educ. 2014. dx.doi.org/10.1021/ed400495m

6. Sewry, J., & Mokilane, P.  A Rasch analysis to determine the
difficulty of the National Senior Certificate Mathematics examination.
Perspectives in education: standards in education and training: the
challenge, 2014, 32(1), 192-209.


Reddy, M., Sewry, J.D. Short paper. "Service-Learning: an insight into
chemical education". SAARMSTE 2014 Conference. Port Elizabeth, 13 - 16
January 2014

7.    “The coordination and extractive chemistry of the later 3d transition metals with bis((1R-benzimidazol-2-yl)methyl)sulphide” N. Magwa, E. Horsten, G.M Watkins and Z. R. Tshentu   Journal of Coordination Chemistry Vol. 66, No. 1, 10 January 2013, 114–125 (DOI:  10.1080/00958972.2012.748192)

8.    “Antimicrobial activity and Cu(II) complexes of Schiff bases derived from ortho-aminophenol and salicylaldehyde derivatives” Abdullahi Owolabi Sobola and Gareth Mostyn Watkins Journal of Chemical and Pharmaceutical Research, 2013, 5(10):147-154 (ISSN : 0975-7384 CODEN(USA) : JCPRC5)

9.     “Synthesis, Characterisation and antimicrobial activity of Copper(II) complexes of some o-substituted aniline Schiff bases; Crystal structure of bis(2-methoxy-6-imino)methylphenol copper(II) complex”     AO Sobola, GM Watkins and B van Brecht. South African Journal of Chemistry (2014) 67, 45-51  ( ISSN 03794350) - B van Brecht(staff NMMU)


10.    “Copper(II) complexes of 2-(methylthiomethyl)anilines: Spectral, structural properties and in vitro antimicrobial activity," by Temitope Elizabeth Olalekan, Denzil Ronald Beukes, Bernardus Van Brecht and Gareth Mostyn Watkins  Journal of Inorganic Chemistry, (2014), 2014, Article ID 769573, 10 pages http://dx.doi.org/10.1155/2014/769573 D Beukes  (staff Pharmacy)  B van Brecht(staff NMMU)

11.    “Investigation of a Mixed Metal Organic Framework compound involving Nickel(II), Zinc(II) And 1, 2, 4, 5-Benzenetetracarboxylic Acid.” Ivan. M. Hodgson, Gareth M. Watkins, Kevin A. Lobb and Eric Hosten.    INORG2013 Conference, Southern Sun Elangeni Hotel, Durban, South Africa .30th June – 4th July 2013. (oral presentation) - Eric Hosten (staff NMMU)


12.    “Exploiting amine extractants for separation of base metals” Adeleleye I Okewole; Nomampondo P Magwa; Gareth M Watkins and Zeni R Tshentu; INORG2013 Conference, Southern Sun Elangeni Hotel, Durban, South Africa. 30th June – 4th July 2013.    (collaborator poster presentation)

13.    “The comparative difference between the coordination of acetic acid and water in a Ni(II) Metal Organic Framework using the 1,2,4.5-benzenetetracarboxylic acid ligand” I. M. Hodgson, G. M. Watkins,  K. A. Lobb & E. Hosten. 41st SACI Convention River Park Conference Center East London, South Africa, 1st - 6st December 2013.     (student lecture presentation) - Eric Hosten (staff NMMU)


14.    “Copper(II) complexes of 2-(methylthiomethyl)anilines: spectral, structural, electrochemical property  and in vitro antimicrobial activity” T Olalekan, GM Watkins, D Beukes  & B Van Brecht. 41st SACI Convention River Park Conference Center East London, South Africa, 1st - 6st December 2013.  (poster presentation) , D Beukes  (staff Pharmacy) & B Van Brech (staff NMMU)

15.    “Structural shifts reacting to Thermal events in XRPD for a Ni(II)  complex containing the 1, 2, 4, 5-benzenetetracarboxyate ligand.” I. M. Hodgson and G. M. Watkins.  TOPAZ Workshop &Southern African Powder Diffraction Conference and Workshop. University of Witwatersrand, Johannesburg, South Africa, 25th - 31st Jan 2014.  (student poster presentation)

16.    “Studies on Schiff/Mannich Bases of Salicyaldehyde and their Copper Complexes” Ayowole O. Ayeni, Gareth M. Watkins  Symposium on Chemico- and Biomedicinal Research, Rhodes University, Monday, 27 October, 2014.  (student oral & poster presentation)

17.    “Studies on quinoline Schiff bases and their metal(II) complexes [Co, Ni & Cu] as potential antimalarial lead drugs.” M.I. Barde, D.R. Beukes and G.M. Watkins..  Symposium on Chemico- and Biomedicinal Research, Rhodes University, Monday, 27 October, 2014. (student poster presentation) D Beukes  (staff Pharmacy)


18.  AT Kuvarega, RWM Krause, BB Mamba “Evaluation of the simulated solar light photocatalytic activity of N, Ir co-doped TiO< sub> 2</sub> for organic dye removal from water, Applied Surface Science, 2015, 329, 127-136

19.  OF Olorundare, TAM Msagati, RWM Krause, JO Okonkwo, BB Mamba, “ Preparation and use of maize tassels’ activated carbon for the adsorption of phenolic compounds in environmental waste water samples”, Environmental Science and Pollution Research, (2014), 1-13

20.  AT Kuvarega, RWM Krause, BB Mamba, “Comparison between Base Metals and Platinum Group Metals in Nitrogen, M Codoped TiO 2 (M= Fe, Cu, Pd, Os) for Photocatalytic Removal of an Organic Dye in Water”, Journal of Nanomaterials, 2014, http://dx.doi.org/10.1155/2014/962102

21.  S Mpofu, DT Ndinteh, SF van Vuuren, DK Olivier, RWM Krause, “Interactive efficacies of< i> Elephantorrhiza elephantina</i> and< i> Pentanisia prunelloides</i> extracts and isolated compounds against gastrointestinal bacteria”, South African Journal of Botany 94, (2014) 224-230

22.   HM Nanjundaswamy, RWM Krause, “GNP Assisted Rapid, Efficient and Green Synthesis of Bis (indolyl) Methanes in Water”, Advanced Science, Engineering and Medicine 6 (5), (2014) 612-617


23.   T Ndlovu, AT Kuvarega, OA Arotiba, S Sampath, RW Krause, BB Mamba, “Exfoliated graphite/titanium dioxide nanocomposites for photodegradation of eosin yellow”, Applied Surface Science 300, (2014), 159-164


24.  MCY Fomogne-Fodjo, S Van Vuuren, DT Ndinteh, RWM Krause, “Antibacterial activities of plants from Central Africa used traditionally by the Bakola pygmies for treating respiratory and tuberculosis-related symptoms”, Journal of Ethnopharmacology, Volume 155, Issue 1, 8 August 2014, Pages 123–131

25.  TJ Matshaya, AE Lanterna, AM Granados, RWM Krause, B Maggio, “Distinctive interactions of oleic acid covered magnetic nanoparticles with saturated and unsaturated phospholipids in Langmuir monolayers”, Langmuir, 2014, 30 (20), pp 5888–5896


26.  SJ Mpofu, TAM Msagati, RWM Krause , “Synthesis of liposomes using-phosphotidycholine and metabolites obtained from Elephantorrhiza elephantina and Pentanisia prunelloides”, African Journal of Biotechnology 13 (12), (2014), 1402-1412

27.  OF Olorundare, TAM Msagati, RWM Krause, JO Okonkwo, BB Mamba, “Activated Carbon from Lignocellulosic Waste Residues: Effect of Activating Agent on Porosity Characteristics and Use as Adsorbents for Organic Species”, Water, Air, & Soil Pollution 225 (3), (2014), 1-14

28.  X Siwe Noundou, RWM Krause, SF van Vuuren, D Tantoh Ndinteh, “Antibacterial activity of the roots, stems and leaves of< i> Alchornea floribunda</i>”, of Ethnopharmacology 151 (2), (2014), 1023-1027

29.  OF Olorundare, TAM Msagati, RWM Krause, JO Okonkwo, BB Mamba, “Steam activation, characterisation and adsorption studies of activated carbon from maize tassels”, Chemistry and Ecology, Vol 30, Issue 5, (2014), 473-490

30.  OF Olorundare, TAM Msagati, RWM Krause, JO Okonkwo, BB Mamba, “Polyurethane composite adsorbent using solid phase extraction method for preconcentration of metal ion from aqueous solution”, International Journal of Environmental Science and Technology, (2014), 29 July, 1-12

31.  SJ Mpofu, OA Arotiba, L Hlekelele, DT Ndinteh, RW Krause , “Determination of catechins from Elephantorrhiza elephantina and Pentanisia prunelloides using voltammetry and UV spectroscopy.”, Natural product communications 9 (1), (2014), 41-43

32.  S Moeno, RWM Krause, EA Ermilov, W Kuzyniak, M Höpfner,  “Synthesis and characterization of novel zinc phthalocyanines as potential photosensitizers for photodynamic therapy of cancers”, Photochemical & Photobiological Sciences 13 (6), (2014), 963-970

33.  SJ Mpofua, TAM Msagati, RWM Krause, “Cytotoxicity, phytochemical analysis and antioxidant activity of crude extracts from rhizomes of Elephantorrhiza elephantina and Pentanisia prunelloides.”, African Journal of Traditional, Complementary & Alternative Medicines 11 (1), (2014), 34-52


34. Evaluation of Baylis-Hillman routes to 3-(aminomethyl)coumarin derivatives

Idris Olasupo, Nathan R. Rose, Rosalyn Klein, Luqman A. Adams, Oluwole B. Familoni

and Perry T. Kaye,*

Synth. Commun. 2014, 44(2), 251-258.

 

2015 Research Publications

1.    Racheal O. Ogbodu, Edith K. Amuhaya, Philani Mashazi, Tebello Nyokong. Photophysical properties of zinc phthalocyanine–uridine single walled carbon nanotube – conjugates. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 149: 231–239
    doi.org/10.1016/j.saa. 2015.04.040

2.    S. Zongoa, b, , , K. Sanusie, J. Brittone, P. Mthunzid, T. Nyokonge, M. Maazaa, b, B. Sahraouic. Nonlinear optical properties of natural laccaic acid dye studied using Z-scan technique. Optical Materials.
    doi.org/10.1016/j.optm at.2015.04.031

3.    Racheal O. Ogbodu, Tebello Nyokong. Enhanced triplet state parameters for zinc carboxy phenoxy phthalocyanine following conjugation to ascorbic acid: Effects of adsorption on single walled carbon nanotubes. Polyhedron. 90: 175–182
    doi.org/10.1016/j.poly .2015.01.032

4.    Collins Obuaha, Yemanlall Locheea, Johan H.L. Jordaanb, Daniel P. Ottob, Tebello Nyokongc, James Darkwaa. (Ferrocenylpyrazolyl)zinc(II) benzoates as catalysts for the ring opening polymerization of ε-caprolactone. Polyhedron. 90: 154–164
    doi.org/10.1016/j.poly .2015.02.007

5.    Jessica M. Taylor, Christian Litwinski, Tebello Nyokong, Edith M. Antunes. Synthesis and characterization of Na(Y,Gd)F4 upconversion nanoparticles and an investigation of their effects on the photophysical properties of an unsubstituted tetrathiophenoxy phthalocyanine. Journal of Nanoparticle Research. 17:85.
    doi.org/10.1007/s11051 -015-2889-5

6.    O. F. Olorundare, T. A. M. Msagati, R. W. M. Krause, J. O. Okonkwo, B. B. Mamba. Preparation and use of maize tassels’ activated carbon for the adsorption of phenolic compounds in environmental waste water samples. Environmental Science and Pollution Research. 22, 8: 5780-5792
    doi.org/10.1007/s11356 -014-3742-6

7.    Stephen Nyoni, Philani Mashazi and Tebello Nyokong. Iodine-Doped Cobalt Phthalocyanine Supported on Multiwalled Carbon Nanotubes for Electrocatalysis of Oxygen Reduction Reaction. Electroanalysis. 27, 5: 1176–1187
    doi: 10.1002/elan.201400499

8.    Phindile Khozaa & Tebello Nyokong. Visible light transformation of Rhodamine 6G using tetracarbazole zinc phthalocyanine when embedded in electrospun fibers and in the presence of ZnO and Ag particles. Journal of Coordination Chemistry. 68, 7: 1117-1131
    doi: 10.1080/00958972.2015.1013944

9.    Phumelele Kleyi, Valencia Jacobsb, Choon-Ki Nac, Carminita L. Frostd, Zenixole R. Tshentue* & Nelson Torto. Fabrication and Antibacterial Activity of Electrospun Nylon 6 Nanofibers Grafted With 2-Substituted Vinylimidazoles. International Journal of Polymeric Materials. 64, 6: 287-298
    doi:10.1080/00914037.2014.945202

10.    Mpho Ledwaba, Nkosiphile Masilela, Tebello Nyokong, Edith Antunes. Surface modification of silica-coated gadolinium oxide nanoparticles with zinc tetracarboxyphenoxy phthalocyanine for the photodegradation of Orange G. Journal of Molecular Catalysis A: Chemical. 403: 64–76
    doi:10.1016/j.molcata.2015.03.023

11.    Phumelele Kleyia, Valencia Jacobsb, Choon-Ki Nac, Carminita L. Frostd, Zenixole R. Tshentu    & Nelson Torto.  Fabrication and Antibacterial Activity of Electrospun Nylon 6 Nanofibers Grafted With 2-Substituted Vinylimidazoles. p. 287-298.

         DOI: 10.1080/00914037.2014.945202

12.   Phindile Khozaa & Tebello Nyokong. Visible light transformation of Rhodamine 6G using tetracarbazole zinc phthalocyanine when embedded in electrospun fibers and in the presence of ZnO   and Ag particles. P. 1117-1131. DOI:10.1080/00958972.2015.1013944

13.  Stephen Nyoni, Philani Mashazi andTebello Nyokong. Iodine-Doped Cobalt Phthalocyanine Supported on Multiwalled Carbon Nanotubes for Electrocatalysis of Oxygen Reduction Reaction. 27. pages 1176–1187, May 2015.

14.   O. F. Olorundare, T. A. M. Msagati, R. W. M. Krause, J. O. Okonkwo, B. B. Mamba. Preparation and use of maize tassels’ activated carbon for the adsorption of phenolic compounds in environmental waste water samples. April 2015, Volume 22, Issue 8, pp 5780-5792



15.   Jessica M. Taylor, Christian Litwinski, Tebello Nyokong, Edith M. Antunes. Synthesis and characterization of Na(Y,Gd)F4 upconversion nanoparticles and an investigation of their effects on the photophysical properties of an unsubstituted tetrathiophenoxy phthalocyanine. Journal of Nanoparticle Research. February 2015, 17:85


16.   Colin Mkhize, Jonathan Britton, John Mack, Tebello Nyokong. Optical limiting and singlet oxygen generation properties of phosphorus triazatetrabenzcorroles. Porphyrins Phthalocyanines 19, 192 (2015).  doi: 10.1142/S1088424614501065.

 

2013 Research Publications

2012 Research Publications

2011 Research Publications

2010 Research Publications

2009 Research Publications

Last Modified :Thu, 20 Apr 2017 09:22:27 SAST