Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/154729
Title: Electrografting of sterically bulky tetramethylaniline groups on glassy carbon electrodes through aryldiazonium chemistry : reasons for the formation of multilayers
Authors: Subrata, Arnold
Veksha, Andrei
Pong, Zhi Yi
Lisak, Grzegorz
Webster, Richard David
Keywords: Science::Chemistry
Issue Date: 2020
Source: Subrata, A., Veksha, A., Pong, Z. Y., Lisak, G. & Webster, R. D. (2020). Electrografting of sterically bulky tetramethylaniline groups on glassy carbon electrodes through aryldiazonium chemistry : reasons for the formation of multilayers. ChemElectroChem, 7(15), 3368-3380. https://dx.doi.org/10.1002/celc.202000796
Project: RG3/19
Journal: ChemElectroChem
Abstract: Within the field of electrografting with aryldiazonium cations, there are various methods available to graft a monolayer of organic groups onto electrode surfaces. One of these relies on the presence of steric groups or constraints on the aryldiazonium cation itself, which prevent multilayers from being formed by blocking access of the free aryl carbons on the grafted layer to the diazonium cations. Here, we investigate the nature of the layer formed from the electrochemical reduction of bulky 2,3,5,6-tetramethylaniline monodiazonium cations on glassy carbon (GC) electrodes, to form 2,3,5,6-tetramethylaniline-modified GC (GC−TMA), which was subsequently characterized by atomic force microscopy scratching, cyclic voltammetry, electrochemical impedance spectroscopy, and X-ray photoelectron spectroscopy. Despite the bulky structure of the TMA group, GC−TMA was found to exhibit sparse multilayers, owing to the ability of the precursor to undergo its own electropolymerization under the experimental conditions used.
URI: https://hdl.handle.net/10356/154729
ISSN: 2196-0216
DOI: 10.1002/celc.202000796
Rights: © 2020 Wiley-VCHGmbH. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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