Vakurov, A, Mokry, G, Drummond-Brydson, R et al. (3 more authors) (2013) ZnO nanoparticle interactions with phospholipid monolayers. Journal of Colloid and Interface Science, 404. 161 - 168. ISSN 0021-9797
Abstract
Aqueous ZnO nanoparticle dispersions interaction with a dioleoyl phosphatidylcholine (DOPC) monolayer is reported in this paper. ZnO-DOPC interactions were investigated using rapid cyclic voltammetry (RCV) by focusing on the effect of the interactions on the characteristics of the capacitance current peaks representing two potential induced phase transitions. Results showed: - (1) The order of interaction of common commercially sourced nanoparticles with DOPC coated Hg electrodes was NanoTek. NanoShield. metals basis. This extent of interaction was inversely related to the ZnO particle size where the metals basis nanoparticles were strongly aggregated. The contribution of the non-ionic dispersant added by manufacturer to the NanoTek and NanoShield interaction was uncertain. (2) Freshly prepared aqueous Nanosun ZnO nanoparticle (~25. nm) dispersions interacted with and penetrated DOPC coated Hg electrodes. Aggregation of the nanoparticles, coating of the ZnO with phosphate and coating of the ZnO with fulvic acid minimised ZnO-DOPC interaction. (3) In-house synthesised ZnO nanoparticles of lower primary particle size (~6. nm) than Nanosun ZnO nanoparticles interacted strongly with DOPC coated Hg electrodes with no evidence of penetration of the nanoparticle in the DOPC monolayer. Even after considerable aggregation of the particle to between 1 and 10. μm, a strong interaction of the in-house synthesised ZnO with DOPC was observed.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2013. Elsevier. Uploaded in accordance with the publisher's self-archiving policy. NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Colloid and Interface Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Colloid and Interface Science, 404,(2013) DOI:10.1016/j.jcis.2013.05.010 |
Keywords: | Particle aggregation; Particle size; Phospholipid monolayers; Rapid cyclic voltammetry; Zinc oxide nanoparticles |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Institute for Materials Research (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemistry (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 24 Nov 2014 09:55 |
Last Modified: | 16 Nov 2016 16:24 |
Published Version: | http://dx.doi.org/10.1016/j.jcis.2013.05.010 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.jcis.2013.05.010 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:81691 |