- Title
- Conjugates of low-symmetry Ge, Sn and Ti carboxy phthalocyanines with glutathione caped gold nanoparticles
- Creator
- Masilela, Nkosiphile, Nyokong, Tebello
- Subject
- To be catalogued
- Date
- 2011
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/247003
- Identifier
- vital:51536
- Identifier
- xlink:href="https://doi.org/10.1016/j.jphotochem.2011.08.009"
- Description
- This work reports on conjugation of low symmetry Ge (GeMCPc), Ti (TiMCPc) and Sn (SnMCPc) carboxy phthalocyanines with glutathione capped gold nanoparticles (GSH-AuNPs). The photophysical behaviour of the novel phthalocyanines–GSH-AuNPs conjugate was investigated and compared to the monocarboxy Pcs and to the mixture of Pc with GSH-AuNPs without a chemical bond. Blue shifting of Q band of the phthalocyanines was observed on linking to GSH-AuNPs. An improvement in triplet lifetimes was obtained for all the MPcs–GSH-AuNPs-linked conjugates compared to the MPcs alone. The highest triplet quantum yield of 0.75 and the longest triplet lifetime of 130 μs were obtained for the GeMCPc–GSH-AuNPs-linked conjugate. Fluorescence quantum yields and lifetimes were low for the conjugates due to quenching by the nanoparticles.
- Format
- computer, online resource, application/pdf, 1 online resource (8 pages), pdf
- Publisher
- Elsevier
- Language
- English
- Relation
- Journal of Photochemistry and Photobiology A: Chemistry, Masilela, N. and Nyokong, T., 2011. Conjugates of low-symmetry Ge, Sn and Ti carboxy phthalocyanines with glutathione caped gold nanoparticles: an investigation of photophysical behaviour. Journal of Photochemistry and Photobiology A: Chemistry, 223(2-3), pp.124-131, Journal of Photochemistry and Photobiology A: Chemistry volume 223 number 2 - 3 p. 124 2011 1873-2666
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Elsevier Terms and Conditions Statement (https://www.elsevier.com/legal/elsevier-website-terms-and-conditions)
- Rights
- Closed Access
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Collections
RU DST/NRF SARChI for Medicinal Chemistry and Nanotechnology
Nyokong, Tebello (Distinguished Professor)
RU Department of Chemistry
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details Download | SOURCE1 | Conjugates of low-symmetry Ge, Sn and Ti carboxy phthalocyanines.pdf | 652 KB | Adobe Acrobat PDF | View Details Download |