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 Prof. Edith Antunes

Position: Associate Professor, Research, NMR spectroscopist
Department: Department of Chemistry
Faculty: Faculty of Natural Science
Qualifications: PhD (Rhodes University)
Tel: 021 959 4020
Fax: 021 959 3055
Email: ebeukes@uwc.ac.za
Research:
 
 
 
 

Biography

 Prof. Antunes joined the Chemistry Department at UWC in 2014 as the NMR specialist (Senior Researcher) following a move from Rhodes University where she completed her undergraduate studies in Chemistry and Geology through to a PhD in marine natural products chemistry. Prof Antunes also has a deep interest in instrumental techniques and their application to solve a variety of problems and research questions which is due to her varied experience in research fields over the years; her PhD and two postdoctoral stints (2003–2006) in marine natural products chemistry – one at Oregon State University under Prof William Gerwick, and a third postdoctoral opportunity in a neuroscience laboratory (2006) in the  analyses of various neurotransmitters from rat brain (under Prof Santy Daya). She then served as a postdoc (2007) to a large group (about 30 postgraduate students) under Prof Tebello Nyokong, eventually becoming the manager of the Nanotechnology Innovation Centre-Sensors (NIC) at Rhodes University (2010–2013). In addition to her interest in marine natural products chemistry, over the last 10 years her research interests have drawn on the development of a variety of porphyrin and phthalocyanine macrocycles and nanomaterials such as noble metal, magnetic and upconversion nanoparticles for improved diagnosis and treatment of cancer and infectious diseases through application in photodynamic therapy and photodynamic antimicrobial therapy, as well as catalysis. Due to the increased interest in a green economy, since 2015 her research has been adapted to include the preparation of ‘green’ nanomaterials for application in drug delivery and catalysis. Prof. Antunes is a member of the American Society of Pharmacognosy (ASP), the Society of Porphyrins and Phthalocyanines (SPP), the South African Chemical Institute (SACI) and the Phycological Society of South Africa (PSSA). She obtained her NRF rating in 2012 and currently reviews journal articles for Nanoscale, RSC Advances, Dyes and Pigments, Journal of Molecular Catalysis A, Phytotherapy Research, Biomaterials, etc. as well as various NRF grants.

Publications

96.       Photophysicochemical behaviour and antimicrobial properties of monocarboxy Mg (II) and Al (III) phthalocyanine-magnetite conjugates. MA Idowu, S Xego, Y Arslanoglu, J Mark, E Antunes, T Nyokong. (2018) Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 193, 407-414.

95.       Mukhoro OC, Roos WD, Jaffer M, Bolton JJ, Stillman MJ, Beukes DR, Antunes E. Very green photosynthesis of gold nanoparticles by a living aquatic plant: photoreduction of Au(III) by the seaweed Ulva armoricana. (2018) Chemistry: A European Journal, 24 (7), 1657-1666. doi.org/10.1002/chem.201704448. In press.

94.       Ledwaba M, Nkosiphile Masilela N, Nyokong T, Antunes E. Improved photocatalytic degradation of Orange G using hybrid nanofibers (2017) Journal of Nanoparticle Research, 19, 158 (11 pages). DOI: 10.1007/s11051-017-3853-3.

93.            Mokone Mmola, Marilize Le Roes-Hill, Kim Durrell, John J. Bolton, Nicole Sibuyi, Mervin E. Meyer, Denzil R. Beukes, Edith Antunes. Enhanced Antimicrobial and Anticancer Activity of Silver and Gold Nanoparticles Synthesised Using Sargassum incisifolium Aqueous Extracts. (2016) Molecules, 21, 1633. doi:10.3390/molecules21121633.

92.            Mbamalu ON, Antunes E, Silosini N, Samsodien H, Syce J. HPLC Determination of Selected Flavonoid Glycosides and their Corresponding Aglycones in Sutherlandia frutescens Materials (2016) Med Aromat Plants 5(3), 1000246 (10 pages). doi:10.4172/2167-0412.1000246.

91.       Ndayambaje G, Laatikainen K, Laatikainen M, Beukes E, Fatoba O, van der Walt N, Petrik L, Sainio T. Adsorption of nickel(II) on polyacrylonitrile nanofiber modified with 2-(2-pyridyl)imidazole. (2016) Chemical Engineering Journal 284, 15 January 2016, pp. 1106–1116.

90.       Mugadza, T., Antunes, E., Nyokong, T. Synthesis of single-walled carbon nanotubes by the pyrolysis of a compression activated iron(II) phthalocyanine/phthalocyanine metal-free derivative/ferric acetate mixture (2015) Journal of Chemical Sciences, 127(7), pp. 1191-1199.

89.       Ledwaba, M., Masilela, N., Nyokong, T., Antunes, E. Surface modification of silica-coated gadolinium oxide nanoparticles with zinc tetracarboxyphenoxy phthalocyanine for the photodegradation of Orange G. (2015) Journal of Molecular Catalysis A: Chemical 403, 64-76.

88.       Taylor, J., Litwinski, C., Nyokong, T., Antunes, E. Fluorescence Behaviour of an Aluminium Octacarboxy Phthalocyanine - NaYGdF4:Yb/Er Nanoparticle Conjugate. (2015) J. Fluorescence, 13p.

87.       Fayemi, O.E. Ogunlaja, A.S., Antunes, E., Nyokong, T., Tshentu, Z.R. The Development of Palladium(II)-Specific Amine-Functionalized Silica-Based Microparticles: Adsorption and Column Separation Studies.  (2015) Separation Science and Technology (Philadelphia). Volume 50 (10), 1497-1506.

86.       Taylor, JM., Litwinski, C., Nyokong, T., Antunes, E. 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. (2015) J. Nanoparticle Res. 17(2), 18p.

85.       Modisha, P., Antunes, E., Nyokong, T. Photophysical properties of zinc tetracarboxy phthalocyanines conjugated to magnetic nanoparticles. (2015) J. Nanosci. Nanotechnol.  15, 3688-3696.

84.       Managa, M., Antunes, E., Nyokong, T. Conjugates of platinum nanoparticles with gallium tetra - (4-Carboxyphenyl) porphyrin and their use in photodynamic antimicrobial chemotherapy when in solution or embedded in electrospun fiber (2014) Polyhedron 76, 94-101.

83.       Fashina, A., Antunes, E., Nyokong, T. Photophysical behavior of Zn aminophenoxy substituted phthalocyanine conjugates with carboxylic acid-coated silica nanoparticles: Effect of point of substitution (2014) Journal of Molecular Structure. 1068 (1), pp. 245-254.

82.       Mthethwa, T., Antunes, E., Nyokong, T. Photophysical properties of a new water soluble tetra (4-(thiamine) substituted zinc phthalocyanine conjugated to gold nanorods of different aspect ratios. (2014) Dalton Transactions. 43 (22), pp. 8230-8240.

81.       Fashina, A., Antunes, E., Nyokong, T. A comparative photophysicochemical study of mono substituted phthalocyanines grafted onto silica nanoparticles. (2014) Journal of Porphyrins and Phthalocyanines. 18 (5), pp. 396-405.

80.       Goethals, A., Mugadza, T., Arslanoglu, Y., Zugle, R., Antunes, E., Van Hulle, S.W.H., Nyokong, T., De Clerck, K. Polyamide nanofiber membranes functionalized with zinc phthalocyanines. (2014) Journal of Applied Polymer Science. 131 (13), 40486.

79.       Maringa, A., Antunes, E., Nyokong, T. Electrochemical behaviour of gold nanoparticles and Co tetraaminophthalocyanine on glassy carbon electrode. (2014) Electrochimica Acta. 121, pp. 93-101.

78.       Khoza, P., Antunes, E., Nyokong, T. Photophysichochemical behavior of carbazole derivatized zinc phthalocyanine in the presence of ZnO microparticles and when embedded in electrospun fibers. (2014) Dyes and Pigments. 104, pp. 57-66.

77.       Managa, M., Idowu, M.A., Antunes, E., Nyokong, T. Photophysicochemical behavior and antimicrobial activity of dihydroxosilicon tris(diaquaplatinum)octacarboxyphthalocyanine. (2014) Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy. 125, pp. 147-153.

76.            Sanusi, K., Antunes, E., Nyokong, T. Optical nonlinearities in non-peripherally substituted pyridyloxy phthalocyanines: A combined effect of symmetry, ring-strain and demetallation (2014) Dalton Transactions, 43 (3), pp. 999-1010.

75.       Okewole, A.I., Antunes, E., Nyokong, T., Tshentu, Z.R. The development of novel nickel selective amine extractants: 2,20′-pyridylimidazole functionalised chelating resin (2013) Minerals Engineering, 54, pp. 88-93.

74.       Modisha, P., Nyokong, T., Antunes, E. Photodegradation of Orange-G using zinc octacarboxyphthalocyanine supported on Fe3O4 nanoparticles (2013) Journal of Molecular Catalysis A: Chemical, 380, pp. 131-138.

73.       Sanusi, S.O., Antunes, E., Nyokong, T. Nonlinear optical behavior of metal octaphenoxy phthalocyanines: (2013) Journal of Porphyrins and Phthalocyanines, 17 (10), pp. 920-927.

72.       Walmsley, R.S., Litwinski, C., Antunes, E., Hlangothi, P., Hosten, E., McCleland, C., Nyokong, T., Torto, N., Tshentu, Z.R. Oxovanadium(IV)-containing poly(styrene-co-4′-ethenyl-2- hydroxyphenylimidazole) electrospun nanofibers for the catalytic oxidation of thioanisole (2013) Journal of Molecular Catalysis A: Chemical, 379, pp. 94-102.

71.       Fashina, A., Antunes, E., Nyokong, T. Silica nanoparticles grafted with phthalocyanines: Photophysical properties and studies in artificial lysosomal fluid (2013) New Journal of Chemistry, 37 (9), pp. 2800-2809.

70.       Ogbodu, R.O., Antunes, E., Nyokong, T. Physicochemical properties of a zinc phthalocyanine-pyrene conjugate adsorbed onto single walled carbon nanotubes (2013) Dalton Transactions, 42 (30), pp. 10769-10777.

69.       Nyokong, T., Antunes, E. Influence of nanoparticle materials on the photophysical behavior of phthalocyanines (2013) Coordination Chemistry Reviews, 257 (15-16), pp. 2401-2418.

68.       Fayemi, O.E., Ogunlaja, A.S., Kempgens, P.F.M., Antunes, E., Torto, N., Nyokong, T., Tshentu, Z.R. Adsorption and separation of platinum and palladium by polyamine functionalized polystyrene-based beads and nanofibers (2013) Minerals Engineering, (53), pp. 256-265.

67.       D'Souza, S., Moeno, S., Antunes, E., Nyokong, T. Effects of gold nanoparticle shape on the aggregation and fluorescence behaviour of water soluble zinc phthalocyanines (2013) New Journal of Chemistry, 37 (7), pp. 1950-1958.

66.       Khoza, P., Antunes, E., Nyokong, T. Synthesis and photophysicochemical properties of zinc phthalocyanine derivatized with benzothiazole or carbazole photosensitizers (2013) Polyhedron, 61, pp. 119-125.

65.       Ogunlaja, A.S., Khene, S., Antunes, E., Nyokong, T., Torto, N., Tshentu, Z.R. The development of catalytic oxovanadium(IV)-containing microspheres for the oxidation of various organosulfur compounds (2013) Applied Catalysis A: General, 462-463, pp. 157-167.

64.       Ogbodu, R.O., Antunes, E., Nyokong, T. Physicochemical properties of zinc monoamino phthalocyanine conjugated to folic acid and single walled carbon nanotubes (2013) Polyhedron, 60, pp. 59-67.

63.       Britton, J., Antunes, E., Nyokong, T. Synthesis and nonlinear optical examination of 3(4),15(16)-Bis-(4-tert- butyl-phenoxy)-10,22-diaminohemiporphyrazinato chloroindium (2013) Journal of Molecular Structure, 1047, pp. 143-148.

62.       Masilela, N., Antunes, E., Nyokong, T. Axial coordination of zinc and silicon phthalocyanines to silver and gold nanoparticles (2013) Journal of Porphyrins and Phthalocyanines, 17 (6-7), pp. 417-430.

61.       Maringa, A., Mugadza, T., Antunes, E., Nyokong, T. Characterization and electrocatalytic behaviour of glassy carbon electrode modified with nickel nanoparticles towards amitrole detection (2013) Journal of Electroanalytical Chemistry, 700, pp. 86-92.

60.       Malinga, N., Antunes, E., Nyokong, T. Synthesis and physicochemical behaviour of aluminium bis and tris(diammine platinum) octacarboxyphthalocyanine (2013) Polyhedron, 55, pp. 121-125.

59.       Tombe, S., Antunes, E., Nyokong, T. Electrospun fibers functionalized with phthalocyanine-gold nanoparticle conjugates for photocatalytic applications (2013) Journal of Molecular Catalysis A: Chemical, 371, pp. 125-134.

58.       Sekhosana, K.E., Antunes, E., Nyokong, T. Glutathione capped CdTe@ZnS quantum dots-zinc tetracarboxy phthalocyanine conjugates: Fluorescence behavior studies in comparison with zinc octacarboxy phthalocyanines (2013) Polyhedron, 54, pp. 294-299.

57.       Modisha, P., Antunes, E., MacK, J., Nyokong, T. Improvement of the photophysical parameters of zinc octacarboxy phthalocyanine upon conjugation to magnetic nanoparticles (2013) International Journal of Nanoscience, 12 (2), art. no. 1350010.

56.       Rapulenyane, N., Antunes, E., Nyokong, T. A study of the photophysicochemical and antimicrobial properties of two zinc phthalocyanine-silver nanoparticle conjugates (2013) New Journal of Chemistry, 37 (4), pp. 1216-1223.

55.       Adegoke, O., Antunes, E., Nyokong, T. Nanoconjugates of CdTe@ZnS quantum dots with cobalt tetraamino- phthalocyanine: Characterization and implications for the fluorescence recognition of superoxide anion (2013) Journal of Photochemistry and Photobiology A: Chemistry, 257, pp. 11-19.

54.       Fashina, A., Antunes, E., Nyokong, T. Characterization and photophysical behavior of phthalocyanines when grafted onto silica nanoparticles (2013) Polyhedron, 53, pp. 278-285.

53.       Antunes, E., Rapulenyane, N., Ledwaba, M., Litwinski, C., Chidawanyika, W., Nyokong, T. The synthesis and characterisation of magnetic nanoparticles and their interaction with a zinc phthalocyanines (2013) Inorganic Chemistry Communications, 29, pp. 60-64.

52.       Tombe, S., Antunes, E., Nyokong, T. The photophysical and photochemical behaviour of coumarin-derivatized zinc phthalocyanine when conjugated with gold nanoparticles and electrospun into polymer fibers (2013) New Journal of Chemistry, 37 (3), pp. 679-689.

51.       Khoza, P., Antunes, E., Chen, J.-Y., Nyokong, T. Synthesis and photophysicochemical studies of a water soluble conjugate between folic acid and zinc tetraaminophthalocyanine (2013) Journal of Luminescence, 134, pp. 784-790.

50.       Sekhosana, K.E., Antunes, E., Khene, S., D'Souza, S., Nyokong, T. Fluorescence behavior of glutathione capped CdTe@ZnS quantum dots chemically coordinated to zinc octacarboxy phthalocyanines (2013) Journal of Luminescence, 136, pp. 255-264.

49.       Britton, J., Litwinski, C., Antunes, E., Durmu, M., Chauke, V., Nyokong, T. Optical limiting analysis of phthalocyanines in Polymer Thin Films (2013) Journal of Macromolecular Science, Part A: Pure and Applied Chemistry, 50 (1), pp. 110-120.

48.       Rapulenyane, N., Antunes, E., Masilela, N., Nyokong, T. Synthesis and photophysicochemical properties of novel zinc phthalocyanines mono substituted with carboxyl containing functional groups (2012) Journal of Photochemistry and Photobiology A: Chemistry, 250, pp. 18-24.

47.       Ogunlaja, A.S., Chidawanyika, W., Antunes, E., Fernandes, M.A., Nyokong, T., Torto, N., Tshentu, Z.R. Oxovanadium(iv)-catalysed oxidation of dibenzothiophene and 4,6-dimethyldibenzothiophene (2012) Dalton Transactions, 41 (45), pp. 13908-13918.

46.       Malinga, N., Dolotova, O., Bulgakov, R., Antunes, E., Nyokong, T. Synthesis and physicochemical behaviour of aluminium trikis and tetrakis (diaquaplatinum) octacarboxyphthalocynine (2012) Dyes and Pigments, 95 (3), pp. 572-579.

45.       Tombe, S., Chidawanyika, W., Antunes, E., Priniotakis, G., Westbroek, P., Nyokong, T. Physicochemical behavior of zinc tetrakis (benzylmercapto) phthalocyanine when used to functionalize gold nanoparticles and in electronspun fibers (2012) Journal of Photochemistry and Photobiology A: Chemistry, 240, pp. 50-58.

44.       Forteath, S., Antunes, E., Chidawanyika, W., Nyokong, T. Synthesis and photophysical behavior of a novel zinc phthalocyanine containing a single carboxylic acid and three phenylthio substituents (2012) Journal of Luminescence, 132 (9), pp. 2318-2324.

43.       Nombona, N., Antunes, E., Chidawanyika, W., Kleyi, P., Tshentu, Z., Nyokong, T. Synthesis, photophysics and photochemistry of phthalocyanine-ε- polylysine conjugates in the presence of metal nanoparticles against Staphylococcus aureus (2012) Journal of Photochemistry and Photobiology A: Chemistry, 233, pp. 24-33.

42.       Mthethwa, T.P., Arslanoglu, Y., Antunes, E., Nyokong, T. Photophysical behaviour of cationic 2-(dimethylamino) ethanethio tetrasubstituted phthalocyanine complexes in the presence of gold nanoparticles (2012) Polyhedron, 38 (1), pp. 169-177.

41.       Zugle, R., Antunes, E., Khene, S., Nyokong, T. Photooxidation of 4-chlorophenol sensitized by lutetium tetraphenoxy phthalocyanine anchored on electrospun polystyrene polymer fiber (2012) Polyhedron, 33 (1), pp. 74-81.

40.       Antunes, E., Litwinski, C., Nyokong, T. Conjugates of Nanomaterials with Phthalocyanines (2012) Intelligent Nanomaterials: Processes, Properties, and Applications, pp. 347-423.

39.       Forteath, S., Antunes, E., Chidawanyika, W., Nyokong, T. Unquenched fluorescence lifetime for β-phenylthio substituted zinc phthalocyanine upon conjugation to gold nanoparticles (2012) Polyhedron, 34 (1), pp. 114-120.

38.       Nombona, N., Maduray, K., Antunes, E., Karsten, A., Nyokong, T. Synthesis of phthalocyanine conjugates with gold nanoparticles and liposomes for photodynamic therapy (2012) Journal of Photochemistry and Photobiology B: Biology, 107 (1), pp. 35-44.

37.       Moeno, S., Antunes, E., Nyokong, T. Synthesis and photophysical properties of a novel zinc photosensitizer and its gold nanoparticle conjugate (2011) Journal of Photochemistry and Photobiology A: Chemistry, 222 (2-3), pp. 343-350.

36.       Chauke, V.P., Antunes, E., Nyokong, T. Comparative behavior of conjugates of tantalum phthalocyanines with gold nanoparticles or single walled carbon nanotubes towards bisphenol A electrocatalysis (2011) Journal of Electroanalytical Chemistry, 661 (1), pp. 1-7.

35.       Nombona, N., Antunes, E., Litwinski, C., Nyokong, T. Synthesis and photophysical studies of phthalocyanine-gold nanoparticle conjugates (2011) Dalton Transactions, 40 (44), pp. 11876-11884.

34.       Chauke, V.P., Antunes, E., Chidawanyika, W., Nyokong, T. Photocatalytic behaviour of tantalum (V) phthalocyanines in the presence of gold nanoparticles towards the oxidation of cyclohexene (2011) Journal of Molecular Catalysis A: Chemical, 335 (1-2), pp. 121-128.

33.       Moeno, S., Antunes, E., Nyokong, T. The determination of the photosensitizing properties of mercapto substituted phthalocyanine derivatives in the presence of quantum dots capped with mercaptopropionic acid (2011) Journal of Photochemistry and Photobiology A: Chemistry, 218 (1), pp. 101-110.

32.       D'Souza, S., Antunes, E., Nyokong, T. Synthesis and photophysical studies of CdTe quantum dot-monosubstituted zinc phthalocyanine conjugates (2011) Inorganica Chimica Acta, 367 (1), pp. 173-181.

31.       D'Souza, S., Antunes, E., Litwinski, C., Nyokong, T. Photophysical behavior of zinc monoaminophthalocyanines linked to mercaptopropionic acid-capped CdTe quantum dots (2011) Journal of Photochemistry and Photobiology A: Chemistry, 220 (1), pp. 11-19.

30.       Antunes, E.M., Afolayan, A.F., Chiwakata, M.T., Fakee, J., Knott, M.G., Whibley, C.E., Hendricks, D.T., Bolton, J.J., Beukes, D.R. Identification and in vitro anti-esophageal cancer activity of a series of halogenated monoterpenes isolated from the South African seaweeds Plocamium suhrii and Plocamium cornutum (2011) Phytochemistry, 72 (8), pp. 769-772.

29.       Quinton, D., Antunes, E., Griveau, S., Nyokong, T., Bedioui, F. Cyclic voltammetry and spectroelectrochemistry of a novel manganese phthalocyanine substituted with hexynyl groups (2011) Inorganic Chemistry Communications, 14 (1), pp. 330-332.

28.       Ogunbayo, T.B., Antunes, E., Nyokong, T. Investigation of homogeneous photosensitized oxidation activities of palladium and platinum octasubstituted phthalocyanines: Oxidation of 4-nitrophenol (2011) Journal of Molecular Catalysis A: Chemical, 334 (1-2), pp. 123-129.

27.       Coates, M., Antunes, E., Nyokong, T. Electrochemical, spectroscopic and microscopic studies of new manganese phthalocyanine complexes in solution and as self-assembled monolayers on gold (2010) Journal of Porphyrins and Phthalocyanines, 14 (7), pp. 568-581.

26.       Mashazi, P., Antunes, E., Nyokong, T. Probing electrochemical and electrocatalytic properties of cobalt(II) and manganese(III) octakis(hexylthio)phthalocyanine as self-assembled monolayers (2010) Journal of Porphyrins and Phthalocyanines, 14 (11), pp. 932-947.

25.       Britton, J., Antunes, E., Nyokong, T. Fluorescence quenching and energy transfer in conjugates of quantum dots with zinc and indium tetraamino phthalocyanines (2010) Journal of Photochemistry and Photobiology A: Chemistry, 210 (1), pp. 1-7.

24.       Moeno, S., Antunes, E., Khene, S., Litwinski, C., Nyokong, T. The effect of substituents on the photoinduced energy transfer between CdTe quantum dots and mercapto substituted zinc phthalocyanine derivatives (2010) Dalton Transactions, 39 (14), pp. 3460-3471.

23.       Chidawanyika, W., Litwinski, C., Antunes, E., Nyokong, T. Photophysical study of a covalently linked quantum dot-low symmetry phthalocyanine conjugate (2010) Journal of Photochemistry and Photobiology A: Chemistry, 212 (1), pp. 27-35.

22.       Nombona, N., Antunes, E., Nyokong, T. The synthesis and fluorescence behaviour of phthalocyanines unsymmetrically substituted with naphthol and carboxy groups (2010) Dyes and Pigments, 86 (1), pp. 68-73.

21.       Saydan, N., Durmuş, M., Dizge, M.G., Yaman, H., Gürek, A.G., Antunes, E., Nyokong, T., Ahsen, V. Water-soluble phthalocyanines mediated photodynamic effect on mesothelioma cells (2009) Journal of Porphyrins and Phthalocyanines, 13 (6), pp. 681-690.

20.       Britton, J., Antunes, E., Nyokong, T. Fluorescence studies of quantum dots and zinc tetraamino phthalocyanine conjugates (2009) Inorganic Chemistry Communications, 12 (9), pp. 828-831.

19.       Antunes, E.M., Nyokong, T. Synthesis and photophysical behavior of axially substituted phthalocyanine, tetrabenzotriazaporphyrin, and triazatetrabenzcorrole phosphorous complexes (2009) Journal of Porphyrins and Phthalocyanines, 13 (1), pp. 153-160.

18.       Lategan, C., Kellerman, T., Afolayan, A.F., Mann, M.G., Antunes, E.M., Smith, P.J., Bolton, J.J., Beukes, D.R. Antiplasmodial and antimicrobial activities of South African marine algal extracts (2009) Pharmaceutical Biology, 47 (5), pp. 408-413.

17.       Antunes, E.M., Nyokong, T. Synthesis and photophysical properties of tetra- and octasubstituted phosphorous oxide triazatetrabenzcorrole photosensitizers (2008) Metal-Based Drugs, 2008, art. no. 498916.

16.       Chidawanyika, W., Antunes, E., Nyokong, T. Synthesis and solvent effects on the photophysicochemical properties of novel cadmium phenoxy phthalocyanines (2008) Journal of Photochemistry and Photobiology A: Chemistry, 195 (2-3), pp. 183-190.

15.       Marais, E., Antunes, E., Nyokong, T. Photocatalytic transformation of 4-nitrophenol in aqueous media using suspended, water-insoluble metallophthalocyanine complexes (2008) Journal of Coordination Chemistry, 61 (23), pp. 3727-3739.

14.       Marais, E., Klein, R., Antunes, E., Nyokong, T. Photocatalysis of 4-nitrophenol using zinc phthalocyanine complexes (2007) Journal of Molecular Catalysis A: Chemical, 261 (1), pp. 36-42.

13.       Dairam, A., Limson, J.L., Watkins, G.M., Antunes, E., Daya, S. Curcuminoids, curcumin, and demethoxycurcumin reduce lead-induced memory deficits in male wistar rats (2007) Journal of Agricultural and Food Chemistry, 55 (3), pp. 1039-1044.

12.       Mann, M.G.A., Mkwananzi, H.B., Antunes, E.M., Whibley, C.E., Hendricks, D.T., Bolton, J.J., Beukes, D.R. Halogenated monoterpene aldehydes from the South African marine alga Plocamium corallorhiza (2007) Journal of Natural Products, 70 (4), pp. 596-599.

11.       Khene, S., Ogunsipe, A., Antunes, E., Nyokong, T. Microwave synthesis and photophysics of new tetrasulfonated tin(II) macrocycles (2007) Journal of Porphyrins and Phthalocyanines, 11 (2), pp. 109-117.

10.       Mbambisa, G., Tau, P., Antunes, E., Nyokong, T. Synthesis and electrochemical properties of purple manganese(III) and red titanium(IV) phthalocyanine complexes octa-substituted at non-peripheral positions with pentylthio groups (2007) Polyhedron, 26 (18), pp. 5355-5364.

9.          Dairam, A., Antunes, E.M., Saravanan, K.S., Daya, S. Non-steroidal anti-inflammatory agents, tolmetin and sulindac, inhibit liver tryptophan 2,3-dioxygenase activity and alter brain neurotransmitter levels (2006) Life Sciences, 79 (24), pp. 2269-2274.

8.          Antunes, E.M., Maree, S.E., Nyokong, T., Davies-Coleman, M.T., Maree, M.D. The effect of structure on the electrochemical properties of 14 marine pyrroloquinoline metabolites (2005) Journal of Chemical Research, (12), pp. 780-783.

7.          Maharaj, D.S., Maharaj, H., Antunes, E.M., Maree, D.M., Nyokong, T., Glass, B.D., Daya, S. 6-Hydroxymelatonin protects against quinolinic-acid-induced oxidative neurotoxicity in the rat hippocampus (2005) Journal of Pharmacy and Pharmacology, 57 (7), pp. 877-881.

6.          Maharaj, D.S., Molell, H., Antunes, E.M., Maharaj, H., Maree, D.M., Nyokong, T., Glass, B.D., Daya, S. Melatonin generates singlet oxygen on laser irradiation but acts as a quencher when irradiated by lamp photolysis (2005) Journal of Pineal Research, 38 (3), pp. 153-156.

5.          Antunes, E.M., Copp, B.R., Davies-Coleman, M.T., Samaai, T. Pyrroloiminoquinone and related metabolites from marine sponges (2005) Natural Product Reports, 22 (1), pp. 62-72.

4.          Antunes, E.M., Beukes, D.R., Kelly, M., Samaai, T., Barrows, L.R., Marshall, K.M., Sincich, C., Davies-Coleman, M.T. Cytotoxic pyrroloiminoquinones from four new species of South African Latrunculid sponges (2004) Journal of Natural Products, 67 (8), pp. 1268-1276.

3.          Maharaj, D.S., Anoopkumar-Dukie, S., Glass, B.D., Antunes, E.M., Lack, B., Walker, R.B., Daya, S. The identification of the UV degradants of melatonin and their ability to scavenge free radicals (2002) Journal of Pineal Research, 32 (4), pp. 257-261.

2.          Glass, B.D., Brown, M.E., Daya, S., Worthington, M.S., Drummond, P., Antunes, E., Lebete, M., Anoopkumar-Dukie, S., Maharaj, D. Influence of cyclodextrins on the photostability of selected drug molecules in solution and the solid-state (2001) International Journal of Photoenergy, 3 (4), pp. 205-211.

1.          Brown, M.E., Antunes, E.M., Glass, B.D., Lebete, M., Walker, R.B. DSC screening of potential prochlorperazine-excipient interactions in preformulation studies (1999) Journal of Thermal Analysis and Calorimetry, 56 (3), pp. 1317-1322.


Book Chapters:

 

1.          T. Nyokong, E. Antunes. Photochemical and photophysical properties of metallophthalocyanines: The Handbook of Porphyrin Science. Eds. Kadish, K. M.; Smith, K. M.; Guilard, R., Academic Press: New York, Vol. 7, chapt. 34 pp 247-349, World Scientific, Singapore, 2010. ISBN: 978-981-4307-18-5.

2.          E. Antunes, C. Litwinski, T. Nyokong. Conjugates of nanomaterials with phthalocyanines: Intelligent Nanomaterials, Eds. A. Tiwari, A.K. Mishra, Y.K. Mishra, Wiley-Scrivener Publishing LLC, Salem, Massachusetts, USA, 2012. http://www.wiley-vch.de/publish/en/books/ISBN978-0-470-93879-9.​

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Networks

 Prof. M. Stillman (University of Western Ontario, Canada)
Prof. A.P. Antunes (University of Northampton, UK)
Prof. G. Watkins (Rhodes University, South Africa)
Dr. S. Moeno (Wits University, South Africa)
Dr. T. Kroon (University of the Free State, South Africa)
Prof. D.R. Beukes (University of the Western Cape, South Africa)
Prof. L. Davids (University of the Western Cape, South Africa)

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