- Title
- Photophysichochemical behavior of carbazole derivatized zinc phthalocyanine in the presence of ZnO microparticles and when embedded in electrospun fibers
- Creator
- Khoza, Phindile, Antunes, Edith M, Nyokong, Tebello
- Type
- Article
- Identifier
- vital:7303
- Identifier
- http://hdl.handle.net/10962/d1020380
- Description
- The synthesis of a zinc phthalocyanine complex tetrasubstituted with carbazole functionality at the peripheral position (complex 4) is reported. The singlet oxygen quantum yield of the complex was found to be 0.83 in dimethylformamide (DMF). The complex was subsequently conjugated to zinc oxide microparticles (ZnOMPs), the conjugation (formation of the amide bond) was confirmed by IR spectroscopy. The presence of ZnOMPs was found to reduce the singlet oxygen produced (ΦΔ = 0.63) in DMF. Polystyrene electrospun fibers of complex 4 alone and its conjugate to ZnOMPs were found to be thermally stable. The singlet oxygen quantum yield of the modified electrospun fibers was determined in aqueous media with ADMA as a singlet oxygen quencher and were 0.25 and 0.20 for complex 4 and 4-ZnOMPs embedded in fibers, respectively.
- Description
- Original publication is available at http://dx.doi.org/10.1016/j.dyepig.2013.12.019
- Format
- 10 p., pdf
- Publisher
- Elsevier
- Language
- English
- Relation
- Khoza, P., Antunes, E. & Nyokong, T. 2014. Photophysichochemical behavior of carbazole derivatized zinc phthalocyanine in the presence of ZnO microparticles and when embedded in electrospun fibers. Dyes and Pigments, 104:57–66. Avaialable: http://dx.doi.org/10.1016/j.dyepig.2013.12.019.
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Antunes, Edith Martins (Dr)
RU DST/NRF SARChI for Medicinal Chemistry and Nanotechnology
Nyokong, Tebello (Distinguished Professor)
RU Department of Chemistry
SDG 03. Good Health and Well-Being