Oxidative acetylenic coupling reactions as a surface chemistry tool

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dc.contributor.authorCiampi, Sen_AU
dc.contributor.authorJames, Men_AU
dc.contributor.authorDarwish, Nen_AU
dc.contributor.authorLuais, Een_AU
dc.contributor.authorGuan, Ben_AU
dc.contributor.authorHarper, JBen_AU
dc.contributor.authorGooding, JJen_AU
dc.date.accessioned2011-11-22T05:09:54Zen_AU
dc.date.available2011-11-22T05:09:54Zen_AU
dc.date.issued2011-09-14en_AU
dc.date.statistics2011-11-22en_AU
dc.description.abstractA novel method to prepare redox monolayers on silicon electrodes has been developed that employs CuI-catalyzed oxidative acetylenic coupling reactions for molecular electronic type applications. As the first case study, ethynylferrocene was covalently immobilized onto an acetylene-terminated monolayer on a Si(100) surface to give a 1,3-diyne (C[triple bond, length as m-dash]C-C[triple bond, length as m-dash]C-) linked redox assembly. The derivatization process requires no protection/de-protection steps, nor activation procedures. The effect of the conjugated diyne linkage on the rate of electron transfer between tethered ferrocenyl units and the silicon electrode is benchmarked against well-established "click" products (i.e. 1,2,3-triazole linkage). The surfaces, after each step, are characterized thoroughly using X-ray reflectivity (XRR), X-ray photoelectron spectroscopy (XPS), electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). The coupling chemistry provides a useful strategy for functionalizing silicon surfaces and contributes to an expanding repertoire of wet chemistry routes for the functionalization of solid substrates.© 2011, Royal Society of Chemistryen_AU
dc.identifier.citationCiampi, S., James, M., Darwish, N., Luais, E., Guan, B., Harper, J. B., & Gooding, J. J. (2011). Oxidative acetylenic coupling reactions as a surface chemistry tool. Physical Chemistry Chemical Physics, 13(34), 15624-15632. doi:10.1039/c1cp21450ken_AU
dc.identifier.govdoc3790en_AU
dc.identifier.issn1463-9076en_AU
dc.identifier.issue34en_AU
dc.identifier.journaltitlePhysical Chemistry Chemical Physicsen_AU
dc.identifier.pagination15624-15632en_AU
dc.identifier.urihttp://dx.doi.org/10.1039/c1cp21450ken_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/3880en_AU
dc.identifier.volume13en_AU
dc.language.isoenen_AU
dc.subjectSiliconen_AU
dc.subjectX-ray photoelectron spectroscopyen_AU
dc.subjectElectrodesen_AU
dc.subjectAcetyleneen_AU
dc.subjectCouplingsen_AU
dc.subjectSolidsen_AU
dc.titleOxidative acetylenic coupling reactions as a surface chemistry toolen_AU
dc.typeJournal Articleen_AU
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