- Title
- Photophysical properties gallium octacarboxy phthalocyanines conjugated to CdSe@ ZnS quantum dots
- Creator
- Tshangana, Charmaine, Nyokong, Tebello
- Subject
- To be catalogued
- Date
- 2015
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/189055
- Identifier
- vital:44812
- Identifier
- xlink:href="https://doi.org/10.1016/j.saa.2015.06.086"
- Description
- L-Glutathione (GSH) capped core CdSe (2.3 nm) and core shell CdSe@ZnS quantum dots (QDs) (3.0 nm and 3.5 nm) were coordinated to gallium octacarboxy phthalocyanine (ClGaPc(COOH)8) to form ClGaPc(COOH)8–QDs conjugates. An efficient transfer of energy from the QDs to the Pcs was demonstrated through Förster resonance energy transfer (FRET), the FRET efficiencies in all cases was above 50%. The photophysical parameters (triplet state and fluorescence quantum yields and lifetimes) were also determined for the conjugates. There was a decrease in the fluorescence lifetimes of ClGaPc(COOH)8 in the presence of all the QDs, due to the heavy atom effect. The triplet quantum yields increased in the conjugates. The lifetimes also became longer for the conjugates compared to Pc alone.
- Format
- computer, online resource, application/pdf, 1 online resource (8 pages), pdf
- Publisher
- Elsevier
- Language
- English
- Relation
- Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, Tshangana, C. and Nyokong, T., 2015. Photophysical properties gallium octacarboxy phthalocyanines conjugated to CdSe@ ZnS quantum dots. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 151, pp.397-404, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy volume 151 p. 397 2015 1386-1425
- 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 | SOURCE1 | Photophysical properties gallium octacarboxy phthalocyanines.pdf | 790 KB | Adobe Acrobat PDF | View Details |