- Title
- Synthesis, photophysical and photochemical properties of tetra-and octa-substituted gallium and indium phthalocyanines
- Creator
- Durmus, Mahmut
- Creator
- Nyokong, Tebello
- Subject
- To be catalogued
- Date Issued
- 2007
- Date
- 2007
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/271276
- Identifier
- vital:54529
- Identifier
- xlink:href="https://doi.org/10.1016/j.poly.2007.03.007"
- Description
- The synthesis, photophysical and photochemical properties of the tetra- and octa-[4-(benzyloxyphenoxy)] substituted gallium(III) and indium(III) phthalocyanines are reported for the first time. The new compounds have been characterized by elemental analysis, IR, 1H NMR spectroscopy and electronic spectroscopy. General trends are described for quantum yields of photodegredation, fluorescence quantum yields and lifetimes, triplet lifetimes and triplet quantum yields as well as singlet oxygen quantum yields of these compounds in dimethylsulfoxide (DMSO). Substituted indium phthalocyanine complexes (7b–9b) showed much higher quantum yields of triplet state and shorter triplet lifetimes, compared to the substituted GaPc derivatives due to enhanced intersystem crossing (ISC) in the former. The gallium and indium phthalocyanine complexes showed phototransformation during laser irradiation due to ring reduction. The singlet oxygen quantum yields (ΦΔ), which give an indication of the potential of the complexes as photosensitizers in applications where singlet oxygen is required (Type II mechanism) ranged from 0.51 to 0.94. Thus, these complexes show potential as photodynamic therapy of cancer.
- Format
- computer
- Format
- online resource
- Format
- application/pdf
- Format
- 1 online resource (13 pages)
- Format
- Publisher
- Elsevier
- Language
- English
- Relation
- Polyhedron
- Relation
- Durmuş, M. and Nyokong, T., 2007. Synthesis, photophysical and photochemical properties of tetra-and octa-substituted gallium and indium phthalocyanines. Polyhedron, 26(13), pp.3323-3335
- Relation
- Polyhedron volume 26 number 13 p. 3323 2007 0277-5387
- 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
RU DST/NRF SARChI for Medicinal Chemistry and Nanotechnology
Nyokong, Tebello (Distinguished Professor)
RU Department of Chemistry
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details Download | SOURCE1 | Synthesis, photophysical and photochemical properties of tetra-and octa-substituted gallium and indium phthalocyanines.pdf | 647 KB | Adobe Acrobat PDF | View Details Download |