- Title
- Electrochemical, spectroscopic and microscopic studies of new manganese phthalocyanine complexes in solution and as self-assembled monolayers on gold
- Creator
- Coates, Megan, Antunes, Edith M, Nyokong, Tebello
- Subject
- To be catalogued
- Date
- 2010
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/261144
- Identifier
- vital:53363
- Identifier
- xlink:href="https://doi.org/10.1142/S1088424610002471"
- Description
- Four new manganese(III) phthalocyanines (3a–d), octasubstituted at the peripheral position with pentylthio, decylthio, benzylthio, and phenylthio groups, respectively, were synthesized. Their specific electrochemical, spectroscopic and microscopic properties in solution and as self-assembled monolayers on gold were characterized. The UV-vis spectra confirmed red-shifted Q bands for all the complexes, due to the effect of the central metal and the electron-donating substituents. Three redox couples were visible during cyclic voltammetry studies for the four complexes, and spectroelectrochemistry confirmed the couples as corresponding to MnIIIPc-2/MnIIPc-2 (II) (metal reduction), MnIIPc-2/MnIIPc-3 (III) (ring reduction) and MnIIIPc-1/MnIIIPc-2 (I) (ring oxidation). Electrochemistry was also used to determine the blocking characteristics of the MnPc self-assembled monolayers on gold, which proved to be highly dependent on the type of substituent. Other methods of characterization included Raman spectroscopy, atomic force and scanning electrochemical microscopy analyses of the SAMs.
- Format
- computer, online resource, application/pdf, 1 online resource (14 pages), pdf
- Publisher
- World Scientific Publishing
- Language
- English
- Relation
- Journal of Porphyrins and Phthalocyanines, Coates, M., Antunes, E. and Nyokong, T., 2010. Electrochemical, spectroscopic and microscopic studies of new manganese phthalocyanine complexes in solution and as self-assembled monolayers on gold. Journal of Porphyrins and Phthalocyanines, 14(07), pp.568-581, Journal of Porphyrins and Phthalocyanines volume 14 number 07 p. 568 2010 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
Antunes, Edith Martins (Dr)
RU DST/NRF SARChI for Medicinal Chemistry and Nanotechnology
Nyokong, Tebello (Distinguished Professor)
RU Department of Chemistry
SDG 03. Good Health and Well-Being
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details | SOURCE1 | Electrochemical, spectroscopic and microscopic studies of new manganese phthalocyanine complexes.pdf | 677 KB | Adobe Acrobat PDF | View Details |