- Title
- Fluorescence “turn on” probe for bromide ion using nanoconjugates of glutathione-capped CdTe@ ZnS quantum dots with nickel tetraamino-phthalocyanine
- Creator
- Adegoke, Oluwasesan
- Creator
- Nyokong, Tebello
- Subject
- To be catalogued
- Date Issued
- 2013
- Date
- 2013
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/190479
- Identifier
- vital:44998
- Identifier
- xlink:href="https://doi.org/10.1016/j.jphotochem.2013.05.013"
- Description
- In this paper, three differently sized glutathione (GSH)-capped CdTe@ZnS quantum dots (QDs) have been successfully conjugated to nickel tetraamino-phthalocyanine (NiTAPc) to form different QDs-NiTAPc nanocomplexes. Several techniques such as TEM, FT-IR, time-resolved fluorescence measurement and electronic spectroscopy were employed to characterize the nanocomplex. Bromide ion was chosen as a model anion to test the efficacy of the nanoprobe. The fluorescence of the nanoconjugate was “turned off” upon binding but was progressively “turned on” upon interaction with varying concentrations of bromide ion. Experimental results showed that the quantum size effect of nanocrystal QD determined the overall sensitivity and selectivity of the nanoprobe and followed the order QD563-NiTAPc > QD605-NiTAPc > QD621-NiTAPc. The mechanism of reaction is proposed.
- Format
- computer
- Format
- online resource
- Format
- application/pdf
- Format
- 1 online resource (9 pages)
- Format
- Publisher
- Elsevier
- Language
- English
- Relation
- Journal of Photochemistry and Photobiology A: Chemistry
- Relation
- Adegoke, O. and Nyokong, T., 2013. Fluorescence “turn on” probe for bromide ion using nanoconjugates of glutathione-capped CdTe@ ZnS quantum dots with nickel tetraamino-phthalocyanine: characterization and size-dependent properties. Journal of Photochemistry and Photobiology A: Chemistry, 265, pp.58-66.
- Relation
- Journal of Photochemistry and Photobiology A: Chemistry volume 265 p. 265 2013 1010-6030
- 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 | Fluorescence “turn on” probe for bromide ion using nanoconjugates of glutathione-capped.pdf | 739 KB | Adobe Acrobat PDF | View Details Download |