https://commons.ufh.ac.za/vital/access/manager/Index en-us 5 https://commons.ufh.ac.za/vital/access/manager/Repository/vital:26996 Wed 12 May 2021 22:53:00 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:29926 Wed 12 May 2021 19:50:04 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:34529 Wed 12 May 2021 19:30:43 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:29928 Wed 12 May 2021 19:14:28 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:29116 Wed 12 May 2021 19:14:06 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:29118 Wed 12 May 2021 18:23:20 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:29122 90% cell survival. The photodynamic activity of water insoluble porphyrins improved when encapsulated into the micelles. Novel asymmetrical phthalocyanines were also synthesised for nonlinear optics (NLO) studies in solution and thin films.]]> Wed 12 May 2021 16:05:57 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:41337 Wed 12 May 2021 15:02:23 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42174 Wed 12 May 2021 15:00:21 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:41489 50% cell viability) at concentrations ≤100 μg/mL, however the conjugates showed < 45% cell viability at concentrations ≤ 100 μg/mL, probably due to the small micellar size and EPR effect. The findings from this work show the importance of incorporating photosensitizers such as phthalocyanines into Pluronic polymers micelles and making them water soluble and ultimately improving their photodynamic effect.]]> Wed 12 May 2021 14:58:28 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:41377 Wed 12 May 2021 14:34:09 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42052 Wed 12 May 2021 14:30:41 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:41328 Wed 12 May 2021 14:19:36 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:41163 Wed 12 May 2021 13:49:36 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:42108 3.76 × 10 − 10 ( 4a ) > 3.52 × 10 − 10 ( 4c ) > 2.29 × 10 − 10 ( 3c ) > 1.68 × 10 − 10 ( 3a ) > 1.65 × 10 − 10 ( 3b ) mW - 1 . The 휷 values trend of synthesized Pc complexes show that the asymmetrical A 3 B type metal free, cobalt and zinc Pc complexes ( 4a , 4b and 4c ) have larger 휷 values as compared to the octa - substituted symmetrical metal free, cobalt and zinc Pc complexes ( 3a , 3b and 3c ) which is attributed to the low symmetry of the Pc complexes. The five - level model rate equations were used to determine the two photon absorption, excited state absorption and ground state absorption cross sections of the synthesized complexes. The z inc A 3 B type asymmetrical Pc complexes gave the largest two photon absorption and 휎 푒 / 휎 푔 ratio values. This Pc complex could be used in future work to enhance the nonlinear response further by introducing nanomaterials and converting the Pc complex to a binuclear Pc. This work also reports on the density functional theory (DFT) calculations o f dipolar/octupolar contributions in order to study the first order hyperpolarizability of the synthesized Pc complexes.]]> Wed 12 May 2021 13:45:11 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:29119 Thu 13 May 2021 16:04:33 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:31404 Thu 13 May 2021 12:43:26 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:30589 50Îll viability at concentrations≤ 160μg/mL, however the conjugates showed<50% cell viabilityatconcentrations≤ 160μg/mLprobably due to the enhanced singlet oxygen quantum yield. The findings from this work show the importance of linking photosensitises such as phthalocyanines to metal nanoparticles for the enhancement ofsinglet oxygen quantum yield and ultimately the photodynamic effect.]]> Thu 13 May 2021 08:10:17 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:35406 Thu 13 May 2021 06:50:34 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:29121 Thu 13 May 2021 01:46:43 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:27821 Thu 13 May 2021 01:17:53 SAST ]]> https://commons.ufh.ac.za/vital/access/manager/Repository/vital:27038 Fri 17 Sep 2021 10:11:50 SAST ]]>