The influence of organic-film morphology on the efficient electron transfer at passivated polymer-modified electrodes to which nanoparticles are attached
The impact of polymer-film morphology on the electron-transfer process at electrode/organic insulator/nanomaterial architectures is studied. The experimental data are discussed in the context of the most recent theory modelling the nanoparticle-mediated electron-transfer process at electrode/insulat...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
Wiley VCH
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/25730 |
| _version_ | 1848751788985942016 |
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| author | Barfidokht, A. Ciampi, S. Luais, E. Darwish, Nadim Gooding, J. |
| author_facet | Barfidokht, A. Ciampi, S. Luais, E. Darwish, Nadim Gooding, J. |
| author_sort | Barfidokht, A. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The impact of polymer-film morphology on the electron-transfer process at electrode/organic insulator/nanomaterial architectures is studied. The experimental data are discussed in the context of the most recent theory modelling the nanoparticle-mediated electron-transfer process at electrode/insulator/nanomaterial architectures proposed by Chazalviel and Allongue [J. Am. Chem. Soc. 2011, 133, 762-764]. A previous report [Anal. Chem. 2013, 85, 1073-1080] by us qualitatively verified the theory and demonstrates a transition from thickness-independent to thickness-dependent electron transfer as the layer thickness exceeds a certain threshold. This follow-up study explores a different polymer, poly(phenylenediamine), and focuses on the effect of the uniformity of organic film on electron transfer at these hybrid structures. Electron-transfer kinetics of modified surfaces, which were assessed using the redox species Ru(NH3)6 3+ in aqueous solution, showed that a thickness-dependent electron-transfer regime is achieved with poly(phenylenediamine). This is attributed to the sufficiently thin films never being fabricated with this polymer. Rather, it is suggested that thin poly(phenylenediamine) layers have a globular structure with poor film homogeneity and pinhole defects. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
| first_indexed | 2025-11-14T07:58:18Z |
| format | Journal Article |
| id | curtin-20.500.11937-25730 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:58:18Z |
| publishDate | 2013 |
| publisher | Wiley VCH |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-257302017-10-02T02:28:15Z The influence of organic-film morphology on the efficient electron transfer at passivated polymer-modified electrodes to which nanoparticles are attached Barfidokht, A. Ciampi, S. Luais, E. Darwish, Nadim Gooding, J. The impact of polymer-film morphology on the electron-transfer process at electrode/organic insulator/nanomaterial architectures is studied. The experimental data are discussed in the context of the most recent theory modelling the nanoparticle-mediated electron-transfer process at electrode/insulator/nanomaterial architectures proposed by Chazalviel and Allongue [J. Am. Chem. Soc. 2011, 133, 762-764]. A previous report [Anal. Chem. 2013, 85, 1073-1080] by us qualitatively verified the theory and demonstrates a transition from thickness-independent to thickness-dependent electron transfer as the layer thickness exceeds a certain threshold. This follow-up study explores a different polymer, poly(phenylenediamine), and focuses on the effect of the uniformity of organic film on electron transfer at these hybrid structures. Electron-transfer kinetics of modified surfaces, which were assessed using the redox species Ru(NH3)6 3+ in aqueous solution, showed that a thickness-dependent electron-transfer regime is achieved with poly(phenylenediamine). This is attributed to the sufficiently thin films never being fabricated with this polymer. Rather, it is suggested that thin poly(phenylenediamine) layers have a globular structure with poor film homogeneity and pinhole defects. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. 2013 Journal Article http://hdl.handle.net/20.500.11937/25730 10.1002/cphc.201300047 Wiley VCH restricted |
| spellingShingle | Barfidokht, A. Ciampi, S. Luais, E. Darwish, Nadim Gooding, J. The influence of organic-film morphology on the efficient electron transfer at passivated polymer-modified electrodes to which nanoparticles are attached |
| title | The influence of organic-film morphology on the efficient electron transfer at passivated polymer-modified electrodes to which nanoparticles are attached |
| title_full | The influence of organic-film morphology on the efficient electron transfer at passivated polymer-modified electrodes to which nanoparticles are attached |
| title_fullStr | The influence of organic-film morphology on the efficient electron transfer at passivated polymer-modified electrodes to which nanoparticles are attached |
| title_full_unstemmed | The influence of organic-film morphology on the efficient electron transfer at passivated polymer-modified electrodes to which nanoparticles are attached |
| title_short | The influence of organic-film morphology on the efficient electron transfer at passivated polymer-modified electrodes to which nanoparticles are attached |
| title_sort | influence of organic-film morphology on the efficient electron transfer at passivated polymer-modified electrodes to which nanoparticles are attached |
| url | http://hdl.handle.net/20.500.11937/25730 |