Self-Assembled Monolayers of Cobalt and Iron Phthalocyanine Complexes on Gold Electrodes

Ozoemena, Kenneth I

Title: Self-Assembled Monolayers of Cobalt and Iron Phthalocyanine Complexes on Gold Electrodes
Creator: Ozoemena, Kenneth I
Creator: Nyokong, Tebello
Creator: Westbroek, Philippe
Subject: To be catalogued
Date Issued: 2003
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 CS 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
Format: online resource
Format: application/pdf
Format: 1 online resource (9 pages)
Format: pdf
Publisher: Wiley Library Online
Language: English
Relation: Electroanalysis: An International Journal Devoted to Fundamental and Practical Aspects of Electroanalysis
Relation: 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
Relation: 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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Nyokong, Tebello (Distinguished Professor)

RU Department of Chemistry

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