- Title
- Axial coordination of zinc and silicon phthalocyanines to silver and gold nanoparticles: an investigation of their photophysicochemical and antimicrobial behavior
- Creator
- Masilela, Nkosiphile
- Creator
- Antunes, Edith M
- Creator
- Nyokong, Tebello
- Subject
- To be catalogued
- Date Issued
- 2013
- Date
- 2013
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/241818
- Identifier
- vital:50972
- Identifier
- xlink:href="https://doi.org/10.1142/S1088424613500016"
- Description
- This work reports on the axial coordination of zinc phthalocyanine and bis-(1,6-hexanedithiol) silicon phthalocyanine to silver and gold nanoparticles. Red shifting of absorption spectra of the phthalocyanine complexes was observed after conjugation with the nanoparticles. An improvement in the photophysicochemical behavior and antimicrobial activity was achieved in the presence of metal nanoparticles for both complexes. A decrease in triplet lifetimes was observed for all the phthalocyanine metal nanoparticle conjugates. The Zn phthalocyanine complex gave the highest triplet and singlet oxygen quantum yield in the presence of gold nanoparticles. On the other hand, the bacterial inhibition was found to be best for the Si phthalocyanine derivative in the presence of nanoparticles compared to the Zn phthalocyanine counterpart. The highest antimicrobial activity was achieved for both conjugates against B. subtilis compared to S. aureaus both in the dark and under illumination with light.
- Format
- computer
- Format
- online resource
- Format
- application/pdf
- Format
- 1 online resource (14 pages)
- Format
- Publisher
- World Scientific Publishing
- Language
- English
- Relation
- Journal of Porphyrins and Phthalocyanines
- Relation
- Masilela, N., Antunes, E. and Nyokong, T., 2013. Axial coordination of zinc and silicon phthalocyanines to silver and gold nanoparticles: an investigation of their photophysicochemical and antimicrobial behavior. Journal of Porphyrins and Phthalocyanines, 17(06n07), pp.417-430
- Relation
- Journal of Porphyrins and Phthalocyanines volume 17 number 06n07 p. 417 2013 1099-1409
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the World Scientific Copyright and Permissions Statement (https://0-www.worldscientific.com.wam.seals.ac.za/page/permissions)
- Rights
- Closed Access
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Collections
Antunes, Edith Martins (Dr)
Nyokong, Tebello (Distinguished Professor)
RU DST/NRF SARChI for Medicinal Chemistry and Nanotechnology
RU Department of Chemistry
SDG 03. Good Health and Well-Being
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details Download | SOURCE1 | Axial coordination of zinc and silicon phthalocyanines.pdf | 882 KB | Adobe Acrobat PDF | View Details Download |