https://commons.ufh.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 Photophysical and photochemical properties of a novel thiol terminated low symmetry zinc phthalocyanine complex and its gold nanoparticles conjugate https://commons.ufh.ac.za/vital/access/manager/Repository/vital:49891 Wed 13 Apr 2022 15:24:31 SAST ]]> Surface patterning using scanning electrochemical microscopy to locally trigger a “click” chemistry reaction https://commons.ufh.ac.za/vital/access/manager/Repository/vital:7331 Wed 12 May 2021 17:20:44 SAST ]]> The use of phthalocyanines in cancer therapy https://commons.ufh.ac.za/vital/access/manager/Repository/vital:7323 Wed 12 May 2021 17:10:03 SAST ]]> Electrochemical impedimetric immunosensor for the detection of measles-specific IgG antibodies after measles infections https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50960 Wed 12 Apr 2023 16:51:30 SAST ]]> Design and evaluation of an electrochemical immunosensor for measles serodiagnosis using measles-specific Immunoglobulin G antibodies https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50962 Wed 12 Apr 2023 16:51:27 SAST ]]> The synthesis and characterisation of magnetic nanoparticles and their interaction with a zinc phthalocyanine https://commons.ufh.ac.za/vital/access/manager/Repository/vital:51002 Wed 10 Apr 2024 15:13:46 SAST ]]> Catalytic oxidation of thioanisole using oxovanadium (IV)‐functionalized electrospun polybenzimidazole nanofibers https://commons.ufh.ac.za/vital/access/manager/Repository/vital:51000 Wed 05 Apr 2023 08:51:07 SAST ]]> Oxovanadium (IV)-containing poly (styrene-co-4′-ethenyl-2-hydroxyphenylimidazole) electrospun nanofibers for the catalytic oxidation of thioanisole https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50959 Wed 05 Apr 2023 08:51:04 SAST ]]> Adsorption and separation of platinum and palladium by polyamine functionalized polystyrene-based beads and nanofibers https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50961 0.99. The highest loading capacity of Pt and Pd were 7.4 mg/g and 4.3 mg/g respectively for the nanofiber sorbent material based on ethylenediamine (EDA) while the beads with ethylenediamine (EDA) gave 1.0 mg/g and 0.2 mg/g for Pt and Pd respectively. Metals loaded on the sorbent materials were recovered by using 3% m/v thiourea solution as the eluting agent with quantitative desorption efficiency under the selected experimental conditions. Separation of platinum from palladium was partially achieved by selective stripping of PtCl62- with 0.5 M of NaClO4 in 1.0 M HCl while PdCl42- was eluted with 0.5 M thiourea in 1.0 M HCl. Separation of platinum from iridium and rhodium under 1 M HCl concentration was successful on triethylenetriamine (TETA)-functionalized Merrifield beads. This material (M-TETA) showed selectivity for platinum albeit the low loading capacity.]]> Wed 05 Apr 2023 08:50:56 SAST ]]> The development of catalytic oxovanadium (IV)-containing microspheres for the oxidation of various organosulfur compounds https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50969 Wed 05 Apr 2023 08:50:51 SAST ]]> The development of catalytic oxovanadium(IV)-containing microspheres for the oxidation of various organosulfur compounds https://commons.ufh.ac.za/vital/access/manager/Repository/vital:7324 Wed 05 Apr 2023 08:50:48 SAST ]]> The development of novel nickel selective amine extractants https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50957 Wed 05 Apr 2023 08:50:43 SAST ]]> Photodynamic inactivation of Staphylococcus aureus using low symmetrically substituted phthalocyanines supported on a polystyrene polymer fiber https://commons.ufh.ac.za/vital/access/manager/Repository/vital:7330 Wed 05 Apr 2023 08:50:26 SAST ]]> Comparative phototransformation of environmental pollutants using metallophthalocyanines supported on electrospun polymer fibers https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45001 Wed 03 Nov 2021 12:17:22 SAST ]]> X-ray photoelectron spectroscopy analysis of the effect of alkyl-and arylthio substituents on manganese phthalocyanines for self-assembled monolayer formation on gold https://commons.ufh.ac.za/vital/access/manager/Repository/vital:44999 Wed 03 Nov 2021 12:09:53 SAST ]]> Fluorescence “turn on” probe for bromide ion using nanoconjugates of glutathione-capped CdTe@ ZnS quantum dots with nickel tetraamino-phthalocyanine https://commons.ufh.ac.za/vital/access/manager/Repository/vital:44998 QD605-NiTAPc > QD621-NiTAPc. The mechanism of reaction is proposed.]]> Wed 03 Nov 2021 12:01:45 SAST ]]> Third order nonlinear optical properties of phthalocyanines in the presence nanomaterials and in polymer thin films https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50968 Tue 24 May 2022 15:54:39 SAST ]]> Fluorescence “switch on” of conjugates of CdTe@ ZnS quantum dots with Al, Ni and Zn tetraamino-phthalocyanines by hydrogen peroxide https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50966 QDs-NiTAPc (4.4 μM) > QDs-AlTAPc (9.8 μM) while the selectivity followed the order: QDs-NiTAPc > QDs-AlTAPc > QDs-ZnTAPc. The varying degree of sensitivity/selectivity and mechanism of detection is discussed in detail.]]> Tue 24 May 2022 15:47:43 SAST ]]> Influence of nanoparticle materials on the photophysical behavior of phthalocyanines https://commons.ufh.ac.za/vital/access/manager/Repository/vital:44995 Tue 24 May 2022 15:40:42 SAST ]]> The photophysical and photochemical behaviour of coumarin-derivatized zinc phthalocyanine when conjugated with gold nanoparticles and electrospun into polymer fibers https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50000 Tue 24 May 2022 15:40:39 SAST ]]> Synthesis and photophysicochemical studies of a water soluble conjugate between folic acid and zinc tetraaminophthalocyanine https://commons.ufh.ac.za/vital/access/manager/Repository/vital:51005 Tue 24 May 2022 15:40:38 SAST ]]> Glutathione capped CdTe@ ZnS quantum dots–zinc tetracarboxy phthalocyanine conjugates https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45395 Tue 24 May 2022 15:40:37 SAST ]]> Nanoconjugates of CdTe@ ZnS quantum dots with cobalt tetraamino-phthalocyanine https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50996 Tue 24 May 2022 15:40:37 SAST ]]> A study of the photophysicochemical and antimicrobial properties of two zinc phthalocyanine–silver nanoparticle conjugates https://commons.ufh.ac.za/vital/access/manager/Repository/vital:49999 Tue 24 May 2022 15:33:45 SAST ]]> Characterization and photophysical behavior of phthalocyanines when grafted onto silica nanoparticles https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50989 Tue 24 May 2022 15:33:44 SAST ]]> Effects of gold nanoparticle shape on the aggregation and fluorescence behaviour of water soluble zinc phthalocyanines https://commons.ufh.ac.za/vital/access/manager/Repository/vital:49997 Tue 24 May 2022 15:33:43 SAST ]]> Fluorescence behavior of glutathione capped CdTe@ ZnS quantum dots chemically coordinated to zinc octacarboxy phthalocyanines https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50993 Tue 24 May 2022 15:33:43 SAST ]]> Axial coordination of zinc and silicon phthalocyanines to silver and gold nanoparticles: an investigation of their photophysicochemical and antimicrobial behavior https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50972 Tue 24 May 2022 15:33:41 SAST ]]> Electrospun fibers functionalized with phthalocyanine-gold nanoparticle conjugates for photocatalytic applications https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45394 Tue 24 May 2022 15:33:38 SAST ]]> Characterization and electrocatalytic behaviour of glassy carbon electrode modified with nickel nanoparticles towards amitrole detection https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50970 Tue 24 May 2022 15:33:37 SAST ]]> Poly methyl methacrylate films containing metallophthalocyanines in the presence of CdTe quantum dots https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50956 Tue 24 May 2022 14:37:00 SAST ]]> Zinc (II) 2, 9, 16, 23-tetrakis [4-(N-methylpyridyloxy)]-phthalocyanine anchored on an electrospun polysulfone polymer fiber: Application for photosensitized conversion of methyl orange https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50020 Tue 19 Apr 2022 14:41:55 SAST ]]> Photophysical and photochemical properties of a novel thiol terminated low symmetry zinc phthalocyanine complex and its gold nanoparticles conjugate https://commons.ufh.ac.za/vital/access/manager/Repository/vital:7329 Thu 13 May 2021 05:49:37 SAST ]]> Electrochemical impedimetric immunosensor for the detection of measles-specific IgG antibodies after measles infections https://commons.ufh.ac.za/vital/access/manager/Repository/vital:7325 Thu 13 May 2021 03:02:38 SAST ]]> Curriculum Vitae of Prof Tebello Nyokong (OMB) https://commons.ufh.ac.za/vital/access/manager/Repository/vital:7233 Thu 13 May 2021 00:17:58 SAST ]]> Ultrafast Photodynamics of the Indoline Dye D149 Adsorbed to Porous ZnO in Dye-Sensitized Solar Cells https://commons.ufh.ac.za/vital/access/manager/Repository/vital:7326 Thu 13 May 2021 00:17:09 SAST ]]> Synthesis and physicochemical behaviour of aluminium bis and tris (diammine platinum) octacarboxyphthalocyanine https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50988 8.2. Both conjugates were found to have two fluorescence lifetimes. The triplet and singlet oxygen quantum yields increased for the conjugates compared to Al(OH)OCPc alone.]]> Thu 07 Jul 2022 21:37:30 SAST ]]> Silica nanoparticles grafted with phthalocyanines https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50001 Thu 07 Jul 2022 21:37:27 SAST ]]> Synthesis and photophysicochemical properties of zinc phthalocyanine derivatized with benzothiazole or carbazole photosensitizers https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50964 Thu 07 Jul 2022 21:37:27 SAST ]]> Physicochemical properties of zinc monoamino phthalocyanine conjugated to folic acid and single walled carbon nanotubes https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50967 Thu 07 Jul 2022 21:37:26 SAST ]]> Synthesis and nonlinear optical examination of 3 (4), 15 (16)-Bis-(4-tert-butyl-phenoxy)-10, 22-diaminohemiporphyrazinato chloroindium https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50965 Thu 07 Jul 2022 21:37:25 SAST ]]> Optical limiting analysis of phthalocyanines in polymer thin films https://commons.ufh.ac.za/vital/access/manager/Repository/vital:49996 Thu 07 Jul 2022 21:30:28 SAST ]]> Nonlinear optical behavior of metal octaphenoxy phthalocyanines https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50963 Thu 07 Jul 2022 21:30:26 SAST ]]> Photodegradation of Orange-G using zinc octacarboxyphthalocyanine supported on Fe3O4 nanoparticles https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50958 Thu 07 Jul 2022 21:30:26 SAST ]]> Physicochemical properties of a zinc phthalocyanine–pyrene conjugate adsorbed onto single walled carbon nanotubes https://commons.ufh.ac.za/vital/access/manager/Repository/vital:51029 Thu 07 Jul 2022 21:30:25 SAST ]]> Surface patterning using scanning electrochemical microscopy to locally trigger a “click” chemistry reaction https://commons.ufh.ac.za/vital/access/manager/Repository/vital:50971 Sun 15 May 2022 17:50:08 SAST ]]> Probing the sensitive and selective luminescent detection of peroxynitrite using thiol-capped CdTe and CdTe@ ZnS quantum dots https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45393 GSH–TGA–CdTe@ZnS>MPA–CdTe QDs. The varying degree of quenching is elucidated based on the QD–thiolate bond of CdTe@ZnS being more sensitive to oxidation from ONOO− than CdTe. The selectivity of the probe in the presence of co-existing species followed the order: GSH–TGA–CdTe@ZnS>MPA–TGA–CdTe@ZnS>MPA–CdTe QDs. QDs capped with MPA showed less selectivity for ONOO− than GSH. The best limit of detection (LOD) of 12.6 nM was obtained for MPA–TGA–CdTe@ZnS QDs. Time-resolved fluorescence measurements indicated that the interaction between ONOO− and the QDs is static in nature.]]> Sat 27 Nov 2021 14:07:54 SAST ]]> Characterization of glassy carbon electrodes modified with carbon nanotubes and iron phthalocyanine through grafting and click chemistry https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45392 Sat 27 Nov 2021 14:00:15 SAST ]]> The interaction of silver nanoparticles with low symmetry cysteinyl metallophthalocyanines and their antimicrobial effect https://commons.ufh.ac.za/vital/access/manager/Repository/vital:45391 Sat 27 Nov 2021 13:53:30 SAST ]]> MCD spectroscopy and TD-DFT calculations of a naphthalene-ring-bridged coplanar binuclear phthalocyanine dimer https://commons.ufh.ac.za/vital/access/manager/Repository/vital:49998 Mon 18 Apr 2022 14:52:15 SAST ]]> Ultrafast Photodynamics of the Indoline Dye D149 Adsorbed to Porous ZnO in Dye‐Sensitized Solar Cells https://commons.ufh.ac.za/vital/access/manager/Repository/vital:51006 Mon 16 May 2022 13:39:29 SAST ]]> Effect of the relative humidity on the fibre morphology of polyamide 4.6 and polyamide 6.9 nanofibres https://commons.ufh.ac.za/vital/access/manager/Repository/vital:51004 Mon 16 May 2022 13:10:16 SAST ]]> Physicochemical properties of a zinc phthalocyanine – pyrene conjugate adsorbed onto single walled carbon nanotubes https://commons.ufh.ac.za/vital/access/manager/Repository/vital:7328 Mon 05 Jul 2021 09:57:54 SAST ]]> Influence of nanoparticle materials on the photophysical behavior of phthalocyanines https://commons.ufh.ac.za/vital/access/manager/Repository/vital:7327 Mon 05 Jul 2021 09:53:08 SAST ]]>