- Title
- The photophysical studies of a mixture of CdTe quantum dots and negatively charged zinc phthalocyanines
- Creator
- Moeno, Sharon, Nyokong, Tebello
- Subject
- To be catalogued
- Date
- 2008
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/268663
- Identifier
- vital:54220
- Identifier
- xlink:href="https://doi.org/10.1016/j.poly.2008.03.007"
- Description
- Fluorescence resonance energy transfer (FRET) studies were carried out with quantum dots capped with thioglycolic acid (TGA) and 2-mercaptoethanol (2-ME) and negatively charged phthalocyanines {Zn tetracarboxy (ZnTCPc), Zn octacarboxy (ZnOCPc) and Zn tetrasulfo (ZnTSPc) phthalocyinines} in a 0.1 NaOH:EtOH (50:50) solvent mixture. The best overlap between emission spectra of the donor (QDs) and the absorption spectra of the acceptor (ZnPc derivatives) was observed for TGA capped QDs, very little overlap was obtained for 2-ME QDs. ZnTSPc gave the highest FRET efficiency (0.3), with ZnOCPc and ZnTCPc giving a FRET efficiency of 0.2. The ΦT values of the MPcs generally decreased in the presence of the QD whereas the triplet lifetimes (τT) of the ZnPc derivatives were higher in the presence of QDs.
- Format
- computer, online resource, application/pdf, 1 online resource (6 pages), pdf
- Publisher
- Elsevier
- Language
- English
- Relation
- Polyhedron, Moeno, S. and Nyokong, T., 2008. The photophysical studies of a mixture of CdTe quantum dots and negatively charged zinc phthalocyanines. Polyhedron, 27(8), pp.1953-1958, Polyhedron volume 27 number 8 p. 1953 2008 0277-5387
- 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
- Hits: 574
- Visitors: 634
- Downloads: 60
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 | The photophysical studies of a mixture of CdTe quantum dots.pdf | 658 KB | Adobe Acrobat PDF | View Details Download |