- Title
- Self-Assembled Monolayers of Cobalt and Iron Phthalocyanine Complexes on Gold Electrodes
- Creator
- Ozoemena, Kenneth I, Nyokong, Tebello, Westbroek, Philippe
- Subject
- To be catalogued
- Date
- 2003
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/290363
- Identifier
- vital:56743
- Identifier
- xlink:href="https://doi.org/10.1002/elan.200302753"
- Description
- The self-assembling of the octa(hydroxyethylthio)-metallophthalocyanine {MOHETPc (M=Co and Fe)} complexes and their similar analogues, octabutylthiometallophthalocyanine {MOBTPc (M=Co and Fe)} complexes on gold electrodes are investigated. Comparative surface voltammetric insights into their distinct self-assembling properties with respect to the passivation of Faradaic processes and surface coverages, including their solution electrochemistry, suggest different orientations and non-cleavage of their CS bonds. In the pH 2−9 range, the reversible [M(III)Pc(−2)]+ / [M(II)Pc(−2)] redox couples show potential shifts close to −59 mV / pH. The gold electrodes modified with the SAMs of these species show electrocatalytic activity towards the oxidation of thiols (L-cysteine, homocysteine and penicillamine) and thiocyanate in acidic media with detection limits in the region of 10−7–10−6 mol dm−3. These monolayers are stable and easily reproducible.
- Format
- computer, online resource, application/pdf, 1 online resource (9 pages), pdf
- Publisher
- Wiley Library Online
- Language
- English
- Relation
- Electroanalysis: An International Journal Devoted to Fundamental and Practical Aspects of Electroanalysis, Ozoemena, K.I., Nyokong, T. and Westbroek, P., 2003. Self‐Assembled Monolayers of Cobalt and Iron Phthalocyanine Complexes on Gold Electrodes: Comparative Surface Electrochemistry and Electrocatalytic Interaction with Thiols and Thiocyanate. Electroanalysis: An International Journal Devoted to Fundamental and Practical Aspects of Electroanalysis, 15(22), pp.1762-1770, Electroanalysis: An International Journal Devoted to Fundamental and Practical Aspects of Electroanalysis volume 15 number 22 p. 1762 2003 1521-4109
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Wiley Library Online Terms of Use Statement (https://onlinelibrary.wiley.com/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 | SOURCE1 | Self‐Assembled Monolayers of Cobalt and Iron Phthalocyanine Complexes on Gold Electrodes.pdf | 601 KB | Adobe Acrobat PDF | View Details |