- Title
- Optical limiters with improved performance based on nanoconjugates of thiol substituted phthalocyanine with CdSe quantum dots and Ag nanoparticles
- Creator
- Oluwole, David O, Yagodin, Alexey V, Britton, Jonathan, Martynov, Alexander G, Gorbunova, Yulia G, Tsivadze, Aslan Yu, Nyokong, Tebello
- Subject
- To be catalogued
- Date
- 2017
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/238286
- Identifier
- vital:50605
- Identifier
- xlink:href="https://doi.org/10.1039/C7DT03867D"
- Description
- Two alternative synthetic approaches affording a low-symmetry A3B-type phthalocyanine 1 bearing two [2′-(2′′-mercaptoethoxy)ethoxy] anchoring substituents were developed. Due to the presence of thiol groups, this phthalocyanine could be conjugated with TOPO-capped (TOPO - trioctylphosphine)-capped CdSe quantum dots (CdSe-QDs) or oleylamine capped silver nanoparticles (Ag-NPs). The nonlinear optical behaviour of starting phthalocyanine, quantum dots, nanoparticles and their conjugates was studied by using an open aperture Z-scan technique, revealing that the grafting of 1 onto the nanomaterials resulted in a significant enhancement of the optical limiting of 1-Ag and 1-CdSe in comparison with the individual components. The conjugate 1-CdSe, being the first example of Pc-based thiol conjugated with quantum dots, revealed superior limiting characteristics with a limiting threshold below 0.18 J cm−2.
- Format
- computer, online resource, application/pdf, 1 online resource (9 pages), pdf
- Publisher
- Royal Society of Chemistry
- Language
- English
- Relation
- Dalton Transactions, Oluwole, D.O., Yagodin, A.V., Britton, J., Martynov, A.G., Gorbunova, Y.G., Tsivadze, A.Y. and Nyokong, T., 2017. Optical limiters with improved performance based on nanoconjugates of thiol substituted phthalocyanine with CdSe quantum dots and Ag nanoparticles. Dalton Transactions, 46(46), pp.16190-16198, Dalton Transactions volume 46 number 46 p. 16190 2017 1477-9234
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Royal Society of Chemistry Terms and Conditions Statement (https://0-www.rsc.org.wam.seals.ac.za/help-legal/)
- Rights
- Open Access
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Collections
Britton, Jonathan (Dr)
RU DST/NRF SARChI for Medicinal Chemistry and Nanotechnology
Nyokong, Tebello (Distinguished Professor)
RU Department of Chemistry
SDG 03. Good Health and Well-Being
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details Download | SOURCE1 | Optical limiters with improved performance based on nanoconjugates.pdf | 2 MB | Adobe Acrobat PDF | View Details Download |