- Title
- Electrode modification through click chemistry using Ni and Co alkyne phthalocyanines for electrocatalytic detection of hydrazine
- Creator
- O'Donoghue, Charles S, Shumba, Munyaradzai, Nyokong, Tebello
- Subject
- To be catalogued
- Date
- 2017
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/233032
- Identifier
- vital:50049
- Identifier
- xlink:href="https://doi.org/10.1002/elan.201700084"
- Description
- This work reports on the development of sensors for the detection of hydrazine using glassy carbon electrodes (GCE) modified with phthalocyanines through click chemistry. Tetrakis(5-hexyn-oxy) cobalt(II) phthalocyanine (complex 2) and tetrakis(5-hexyn-oxy) nickel(II) phthalocyanine (complex 3) were employed as electrode modifiers for hydrazine detection. The GCE was first grafted via the in situ diazotization of a diazonium salt, rendering the GCE surface layered with azide groups. From this point, the 1, 3-dipolar cycloaddition reaction, catalysed by a copper catalyst was utilised to “click” the phthalocyanines to the surface of the grafted GCE. The modified electrodes were characterized by scanning electrochemical microscopy, X-ray photoelectron spectroscopy and cyclic voltammetry. The electrografted CoP2-clicked-GCE and NiP3-clicked-GCE exhibited electrocatalytic activity towards the detection of hydrazine. The limit of detection (LoD) for the CoPc-GCE was 6.09 μM, while the NiPc-GCE had a LoD of 8.69 μM. The sensitivity was 51.32 μA mM−1 for the CoPc-GCE and 111.2 μA mM−1 for the NiPc-GCE.
- Format
- computer, online resource, application/pdf, 1 online resource (10 pages), pdf
- Publisher
- Wiley Library Online
- Language
- English
- Relation
- Electroanalysis, O'Donoghue, C.S., Shumba, M. and Nyokong, T., 2017. Electrode modification through click chemistry using Ni and Co alkyne phthalocyanines for electrocatalytic detection of hydrazine. Electroanalysis, 29(7), pp.1731-1740, Electroanalysis volume 29 number 7 p. 1731 2017 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
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 | Electrode modification through click chemistry using Ni and Co alkyne phthalocyanines.pdf | 962 KB | Adobe Acrobat PDF | View Details Download |