- Title
- Photo-induced resonance energy transfer and nonlinear optical response in ball-type phthalocyanine conjugated to semiconductor and graphene quantum dots
- Creator
- Nwaji, Njemuwa, Achadu, Ojodomo John, Nyokong, Tebello
- Subject
- To be catalogued
- Date
- 2018
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/187959
- Identifier
- vital:44713
- Identifier
- xlink:href="https://doi.org/10.1039/C7NJ05196D"
- Description
- The synthesis of ball-type zinc and gallium phthalocyanines (complexes 2 and 3) and their covalent linkage to glutathione (GSH) and amine functionalized quantum dots QDs) are reported in this work. Furthermore, their photophysical, photo-induced resonance energy transfer and optical limiting responses were investigated. We observed a decrease in the fluorescence quantum yields with a corresponding increase in the triplet quantum yields of the nanoconjugates in comparison to the phthalocyanine complexes alone. The reverse saturable absorption was found to be dependent on the excited state absorption, and the observed limiting threshold ranged from 0.32 to 1.43 J cm−2. Enhanced triplet parameters and nonlinear optical performance were found when the complexes were covalently linked to semiconductor quantum dots compared to carbon based graphene quantum dots.
- Format
- computer, online resource, application/pdf, 1 online resource (11 pages), pdf
- Publisher
- Royal Society of Chemistry
- Language
- English
- Relation
- New Journal of Chemistry, Nwaji, N., Achadu, O.J. and Nyokong, T., 2018. Photo-induced resonance energy transfer and nonlinear optical response in ball-type phthalocyanine conjugated to semiconductor and graphene quantum dots. New Journal of Chemistry, 42(8), pp.6040-6050, New Journal of Chemistry volume 42 number 8 p. 6040 2018 1369-9261
- 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
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 | Photo-induced resonance energy transfer and nonlinear optical response.pdf | 3 MB | Adobe Acrobat PDF | View Details |