- Title
- Effects of central metal on the photophysical and photochemical properties of non-transition metal sulfophthalocyanine
- Creator
- Ogunsipe, Abimbola
- Creator
- Nyokong, Tebello
- Subject
- To be catalogued
- Date Issued
- 2005
- Date
- 2005
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/289337
- Identifier
- vital:56623
- Identifier
- xlink:href="https://doi.org/10.1142/S1088424605000186"
- Description
- The photophysical and photochemical properties and quenching (by 1,4-benzoquinone) of metallophthalocyanine sulfonates of aluminium (AlPcSmix), zinc (ZnPcSmix), silicon (SiPcSmix), germanium (GePcSmix) and tin (SnPcSmix) are presented. The quantum yield values of fluorescence (ΦF), triplet state (ΦT), singlet oxygen (ΦΔ) and photodegradation (Φd) were determined and the observed trends in their variation among the complexes discussed in terms of aggregation and the heavy atom effect. 1,4-benzoquinone effectively quenched the fluorescence of the complexes. Quenching analyses gave positive deviations from Stern-Volmer behavior, suggesting the existence of static quenching in addition to dynamic quenching. The static and dynamic components of the quenching were separated using a modified Stern-Volmer equation and the “sphere of action quenching model”. The quenching constant was found to be a function of the radius of the central metal ion.
- Format
- computer
- Format
- online resource
- Format
- application/pdf
- Format
- 1 online resource (10 pages)
- Format
- Publisher
- World Scientific Publishing
- Language
- English
- Relation
- Journal of Porphyrins and Phthalocyanines
- Relation
- Ogunsipe, A. and Nyokong, T., 2005. Effects of central metal on the photophysical and photochemical properties of non-transition metal sulfophthalocyanine. Journal of Porphyrins and Phthalocyanines, 9(02), pp.121-129
- Relation
- Journal of Porphyrins and Phthalocyanines volume 9 number 02 p. 121 2005 1099-1409
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the World Scientific Copyright and Permissions Statement (https://0-www.worldscientific.com.wam.seals.ac.za/page/permissions)
- Rights
- Closed Access
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Collections
Nyokong, Tebello (Distinguished Professor)
RU Department of Chemistry
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|---|---|---|---|---|---|---|---|
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