- Title
- Photophysical and photochemical parameters of octakis (benzylthio) phthalocyaninato zinc, aluminium and tin
- Creator
- Akpe, Victor
- Creator
- Brismar, Hjalmar
- Creator
- Nyokong, Tebello
- Creator
- Osadebe, Patience Ogoamak
- Subject
- To be catalogued
- Date Issued
- 2010
- Date
- 2010
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/248472
- Identifier
- vital:51689
- Identifier
- xlink:href="https://doi.org/10.1016/j.molstruc.2010.08.033"
- Description
- This paper addresses the synthesis of octa-substituted benzylthio metallophthalocyanines (OBTMPcs) that contain the central metal ions of Zn2+, Al3+ and Sn4+. The ground state absorption of ZnPc(SR)8 (OBTZnPc) along with the ZnPc derivatives, well documented in literature were used to study a new concept called the red shift index (RsI). The concept is based on the empirical values of RsI of the different complexes in solvent media. Unequivocally, parameters used in this paper show strong correlations that are consistent with the results obtained. For instance, RsI of the complexes tend to increase as the refractive index, nD, and solvent donor, DN, of solvent increases. Photodegradation (photobleaching) quantum yield, ϕd measurements of these compounds show that they are highly photostable, ϕd (0.03–0.33 × 10−5). The triplet quantum yield, ϕT (0.40–0.53) and the triplet lifetime, τT (610–810 μs) are within the typical range for metallophthalocyanines in DMSO. The photosensitisation efficiency, SΔ, is relatively high for all the molecules (0.74–0.90).
- Format
- computer
- Format
- online resource
- Format
- application/pdf
- Format
- 1 online resource (14 pages)
- Format
- Publisher
- Elsevier
- Language
- English
- Relation
- Journal of Molecular Structure
- Relation
- Akpe, V., Brismar, H., Nyokong, T. and Osadebe, P.O., 2010. Photophysical and photochemical parameters of octakis (benzylthio) phthalocyaninato zinc, aluminium and tin: Red shift index concept in solvent effect on the ground state absorption of zinc phthalocyanine derivatives. Journal of Molecular Structure, 984(1-3), pp.1-14
- Relation
- Journal of Molecular Structure volume 984 number 1 - 3 p. 1 2010 0022-2860
- 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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RU DST/NRF SARChI for Medicinal Chemistry and Nanotechnology
Nyokong, Tebello (Distinguished Professor)
RU Department of Chemistry
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