https://vital.seals.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 Photophysical studies of zinc and indium tetraaminophthalocyanines in the presence of CdTe quantum dots https://vital.seals.ac.za/vital/access/manager/Repository/vital:4332 Wed 12 May 2021 20:25:51 SAST ]]> Synthesis, optical and morphological characterization of CdSe/ZnSe quantum dots for cytotoxicity studies https://vital.seals.ac.za/vital/access/manager/Repository/vital:10434 Wed 12 May 2021 20:09:09 SAST ]]> Symmetry and asymmetry in electrocatalysis: enhancing the electrocatalytic activity of phthalocyanines through synergy with doped graphene quantum dots https://vital.seals.ac.za/vital/access/manager/Repository/vital:34529 Wed 12 May 2021 19:30:43 SAST ]]> Photo-physicochemical studies and photodynamic therapy activity of indium and gallium phthalocyanines https://vital.seals.ac.za/vital/access/manager/Repository/vital:4548 Wed 12 May 2021 18:32:45 SAST ]]> The photophysical properties of low symmetry phthalocyanines in conjunction with quantum dots https://vital.seals.ac.za/vital/access/manager/Repository/vital:4331 Wed 12 May 2021 17:29:37 SAST ]]> Photophysical properties of zinc carboxy phthalocyanine-quantum dot conjugates https://vital.seals.ac.za/vital/access/manager/Repository/vital:4276 Wed 12 May 2021 16:06:38 SAST ]]> Effect of substituents on the photophysical properties and nonlinear optical properties of asymmetrical zinc(II) phthalocyanine when conjugated to semiconductor quantum dots https://vital.seals.ac.za/vital/access/manager/Repository/vital:31404 Thu 13 May 2021 12:43:26 SAST ]]> Photo-physicochemical characterization and in vitro Photodynamic Therapy Activity of Phthalocyanine-Graphene Quantum Dots Conjugates https://vital.seals.ac.za/vital/access/manager/Repository/vital:37891 Thu 13 May 2021 05:55:46 SAST ]]> Substituent effects on the electrocatalytic activity of cobalt phthalocyanine in the presence of graphene quantum dots https://vital.seals.ac.za/vital/access/manager/Repository/vital:29121 Thu 13 May 2021 01:46:43 SAST ]]> Graphene quantum dots and their metallophthalocyanines nanoconjugates as novel photoluminescent nanosensors https://vital.seals.ac.za/vital/access/manager/Repository/vital:27821 Thu 13 May 2021 01:17:53 SAST ]]> Electrocatalytic activity of symmetric and asymmetric Co(II) and Mn(III) porphyrins in the presence of graphene quantum dots towards the oxidation of hydrazine https://vital.seals.ac.za/vital/access/manager/Repository/vital:65372 Thu 04 Jan 2024 11:00:35 SAST ]]> The construction of phthalocyanine- carbon nanoparticle conjugates for applications in photodynamic therapy and non-linear optics https://vital.seals.ac.za/vital/access/manager/Repository/vital:44750 22% cell viability at concentrations ≤ 50 μg/mL relative to conjugates with <22% cell viability at concentrations ≤ 50 μg/mL. There was no direct relationship between PDT and singlet oxygen quantum yields. Nonlinear optical characteristics of complexes was improved upon conjugation of DNDs. Absorbance, input energy, percentage loading, central metal, substituent of Pc and nature of interaction (covalent, noncovalent) are amongst some of the factors that influence nonlinear absorption properties of materials used in this study. All materials followed reverse saturable absorption through two photon absorption mechanism at the excitation wavelength of 532 nm. Aggregates reduce excited state lifetime and Beff under high concentrations/absorbance. A direct relationship between absorbance and Beff of DNDs nanoconjugated systems at low concentrations result in increased optical limiting characteristics of materials. The findings from this work show the importance of linking (nonlinear optics and photodynamic therapy) and doping (photodynamic therapy) photosensitisers such as phthalocyanines and sometimes boron dipyrromethenes onto carbon based nanoparticles for the enhanced characteristics in variable applications.]]> Mon 15 Nov 2021 16:13:10 SAST ]]> The systematic assembly of prostate specific antigen electrochemical sensors based on asymmetric Co(II) phthalocyanines, graphitic quantum dots and an aptamer https://vital.seals.ac.za/vital/access/manager/Repository/vital:50035 Mon 10 Oct 2022 08:41:01 SAST ]]>