http://vital.seals.ac.za:8080/vital/access/manager/Index en-us 5 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 http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:50939 Wed 10 Aug 2022 06:59:05 SAST ]]> Imidazole-functionalized polymer microspheres and fibers–useful materials for immobilization of oxovanadium (IV) catalysts http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:51431 99%) were obtained in under 240 min with turn-over frequencies ranging from 21.89 to 265.53 h−1, depending on the quantity of catalyst and temperature. The microspherical catalysts also proved to be recyclable with no drop in activity being observed after three successive reactions. The vanadium functionalized fibers were applied in a pseudo continuous flow set-up. Factors influencing the overall conversion and product selectivity, including flow rate and catalyst quantity, were investigated. At flow rates of 1–4 mL h−1 near quantitative conversion was maintained over an extended period. Keeping the mass of catalyst constant (0.025 g) and varying the flow rate from 1–6 mL h−1 resulted in a shift in the formation of the oxidation product methyl phenyl sulfone from 60.1 to 18.6%.]]> Wed 10 Apr 2024 14:17:42 SAST ]]> Photophysical study of a covalently linked quantum dot–low symmetry phthalocyanine conjugate http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:53430 Wed 08 May 2024 16:26:28 SAST ]]> Photophysical behavior of zinc monoaminophthalocyanines linked to mercaptopropionic acid-capped CdTe quantum dots http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:51602 Wed 08 May 2024 16:20:31 SAST ]]> The synthesis and characterisation of magnetic nanoparticles and their interaction with a zinc phthalocyanine http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:51002 Wed 08 May 2024 16:15:04 SAST ]]> Oxovanadium (IV)-containing poly (styrene-co-4′-ethenyl-2-hydroxyphenylimidazole) electrospun nanofibers for the catalytic oxidation of thioanisole http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:50959 Wed 08 May 2024 16:09:39 SAST ]]> Catalytic oxidation of thioanisole using oxovanadium (IV)‐functionalized electrospun polybenzimidazole nanofibers http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:51000 Wed 05 Apr 2023 08:51:07 SAST ]]> Tetra and octa (2, 6-di-iso-propylphenoxy)-substituted phthalocyanines http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:51411 Tue 24 May 2022 23:32:35 SAST ]]> Fluorescence Behaviour of an Aluminium Octacarboxy Phthalocyanine-NaYGdF 4 http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:44852 Tue 24 May 2022 15:05:37 SAST ]]> Optical limiting behavior of ring substituted zinc, indium and gallium phthalocyanines in the presence of quantum dots http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:51548 Tue 07 May 2024 15:17:21 SAST ]]> Optical limiting analysis of phthalocyanines in polymer thin films http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:49996 Tue 07 May 2024 15:15:15 SAST ]]> Photophysical properties of newly synthesized fluorinated zinc phthalocyanines in the presence of CdTe quantum dots and the accompanying energy transfer processes http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:53543 Thu 21 Jul 2022 14:59:50 SAST ]]> Synthesis and photophysical studies of phthalocyanine–gold nanoparticle conjugates http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:51686 Thu 07 Jul 2022 21:51:26 SAST ]]> Photophysical characterization of dysprosium, erbium and lutetium phthalocyanines tetrasubstituted with phenoxy groups at non-peripheral positions http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:51595 Mon 30 May 2022 13:40:31 SAST ]]> Photophysical and photochemical behavior of electrospun fibers of a polyurethane polymer chemically linked to lutetium carboxyphenoxy phthalocyanine http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:51685 Mon 24 Jun 2024 15:26:52 SAST ]]> Ultrafast Photodynamics of the Indoline Dye D149 Adsorbed to Porous ZnO in Dye‐Sensitized Solar Cells http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:51006 Mon 16 May 2022 13:39:29 SAST ]]>