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A comparison of commercially available screen-printed electrodes for electrogenerated chemiluminescence applications

Kerr, Emily, Alexander, Richard, Francis, Paul S, Guijt, Rosanne M, Barbante, Gregory J and Doeven, Egan H 2021, A comparison of commercially available screen-printed electrodes for electrogenerated chemiluminescence applications, Frontiers in chemistry, vol. 8, pp. 1-11, doi: 10.3389/fchem.2020.628483.

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Title A comparison of commercially available screen-printed electrodes for electrogenerated chemiluminescence applications
Author(s) Kerr, Emily
Alexander, RichardORCID iD for Alexander, Richard orcid.org/0000-0001-6121-7885
Francis, Paul SORCID iD for Francis, Paul S orcid.org/0000-0003-4165-6922
Guijt, Rosanne MORCID iD for Guijt, Rosanne M orcid.org/0000-0003-0011-5708
Barbante, Gregory J
Doeven, Egan HORCID iD for Doeven, Egan H orcid.org/0000-0003-2677-4269
Journal name Frontiers in chemistry
Volume number 8
Article ID 628483
Start page 1
End page 11
Total pages 11
Publisher Frontiers Media
Place of publication Lausanne, Switzerland
Publication date 2021-01
ISSN 2296-2646
2296-2646
Keyword(s) chemiluminescence
electrochemiluminescence
electrogenerated
point-of-care sensors
screen-printed electrodes
Summary We examined a series of commercially available screen-printed electrodes (SPEs) for their suitability for electrochemical and electrogenerated chemiluminescence (ECL) detection systems. Using cyclic voltammetry with both a homogeneous solution-based and a heterogeneous bead-based ECL assay format, the most intense ECL signals were observed from unmodified carbon-based SPEs. Three commercially available varieties were tested, with Zensor outperforming DropSens and Kanichi in terms of sensitivity. The incorporation of nanomaterials in the electrode did not significantly enhance the ECL intensity under the conditions used in this evaluation (such as gold nanoparticles 19%, carbon nanotubes 45%, carbon nanofibers 21%, graphene 48%, and ordered mesoporous carbon 21% compared to the ECL intensity of unmodified Zensor carbon electrode). Platinum and gold SPEs exhibited poor relative ECL intensities (16% and 10%) when compared to carbonaceous materials, due to their high rates of surface oxide formation and inefficient oxidation of tri-n-propylamine (TPrA). However, the ECL signal at platinum electrodes can be increased ∼3-fold with the addition of a surfactant, which enhanced TPrA oxidation due to increasing the hydrophobicity of the electrode surface. Our results also demonstrate that each SPE should only be used once, as we observed a significant change in ECL intensity over repeated CV scans and SPEs cannot be mechanically polished to refresh the electrode surface.
Language eng
DOI 10.3389/fchem.2020.628483
Indigenous content off
HERDC Research category C1 Refereed article in a scholarly journal
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30148127

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.