- Title
- Silicon octaphenoxyphthalocyanines
- Creator
- Maree, M David, Kuznetsova, Nina, Nyokong, Tebello
- Subject
- To be catalogued
- Date
- 2001
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/291591
- Identifier
- vital:56890
- Identifier
- xlink:href="https://doi.org/10.1016/S1010-6030(01)00409-9"
- Description
- Photochemical properties of series of axially substituted silicon octaphenoxyphthalocyanines with aryloxy, siloxy, aminoalkoxy, esters of carboxylic acids and sulphonic acid esters residues as axial ligands were studied in dimethylsulfoxide (DMSO) solution. It was found, that under Q-band excitation axial ligands in compounds studied have the propensity to be changed by hydroxyl groups with quantum yields in the range 10−5 to 10−2 depending on the nature of the axial ligand. Axial substituent phototransformation was followed by slow photobleaching of dihydroxysilicon octaphenoxyphthalocyanine (photoproduct) in self-sensitized singlet oxygen mediated oxidation of the macrocycle. Singlet oxygen quantum yields were found to be in the range 0.15–0.20 for majority of the phthalocyanines (Pc) studied.
- Format
- computer, online resource, application/pdf, 1 online resource (9 pages), pdf
- Publisher
- Elsevier
- Language
- English
- Relation
- Journal of Photochemistry and Photobiology A: Chemistry, Maree, M.D., Kuznetsova, N. and Nyokong, T., 2001. Silicon octaphenoxyphthalocyanines: photostability and singlet oxygen quantum yields. Journal of Photochemistry and Photobiology A: Chemistry, 140(2), pp.117-125, Journal of Photochemistry and Photobiology A: Chemistry volume 140 number 2 p. 117 2001 1873-2666
- 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
Nyokong, Tebello (Distinguished Professor)
RU Department of Chemistry
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details Download | SOURCE1 | Silicon octaphenoxyphthalocyanines photostability and singlet oxygen quantum yields.pdf | 608 KB | Adobe Acrobat PDF | View Details Download |