- Title
- Electrocatalytic studies of covalently immobilized metal tetra-amino phthalocyanines onto derivatized screen-printed gold electrodes
- Creator
- Mashazi, Philani N, Nyokong, Tebello
- Subject
- To be catalogued
- Date
- 2015
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/249059
- Identifier
- vital:51774
- Identifier
- xlink:href="https://doi.org/10.1007/s00604-010-0438-6"
- Description
- Metal tetra-amino phthalocyanine complexes (MTAPc; where M is Co or Mn) were immobilized on screen-printed gold electrodes pre-modified with monolayers of benzylamino groups. The functionalized electrodes were then activated using benzene-1,4-dicarbaldehyde as a linker before MTAPc complexes were immobilized. The surface coverages for the modified electrodes confirmed the perpendicular orientation of the MTAPcs. The apparent electron transfer constant (kapp) for the electrodes is 2.2 × 10−5 cm.s−1 for both CoTAPc and MnTAPc modified electrodes as calculated with data from impedance measurements. The kapp values for the bare and benzylamino modified electrodes were found to be 1.2 × 10−4 cm.s−1 and 4.9 × 10−6 cm.s−1, respectively. The electrocatalysis of the modified electrodes towards detection of H2O2 gave significant peak current densities and electrocatalytic potentials at −0.28 V and −0.31 V for the MnTAPc and CoTAPc modified electrodes, respectively.
- Format
- computer, online resource, application/pdf, 1 online resource (12 pages), pdf
- Publisher
- SpringerLink
- Language
- English
- Relation
- Microchimica Acta, Mashazi, P. and Nyokong, T., 2010. Electrocatalytic studies of covalently immobilized metal tetra-amino phthalocyanines onto derivatized screen-printed gold electrodes. Microchimica Acta, 171(3), pp.321-332, Microchimica Acta volume 171 number 3 p. 321 2010 1436-5073
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the SpringerLink Terms of Use Statement ( https://link.springer.com/termsandconditions)
- Rights
- Open Access
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Collections
Mashazi, Philani N (Associate Prof)
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 Download | SOURCE1 | Electrocatalytic studies of covalently immobilized metal tetra-amino phthalocyanines.pdf | 675 KB | Adobe Acrobat PDF | View Details Download |