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dc.contributor.authorMURPHY, FRANCESen
dc.contributor.authorDRAPER, SYLVIAen
dc.date.accessioned2010-04-28T17:06:15Z
dc.date.available2010-04-28T17:06:15Z
dc.date.issued2009en
dc.date.submitted2009en
dc.identifier.citationF. A. Murphy, S. Suárez, E. Figgemeier, E. R. Schofield, S. M. Draper., 'Robust Self-Assembled Monolayers of Ru(II) and Os(II) Polypyridines on Gold Surfaces: Exploring New Potentials', Chemistry a European Journal, 15, 23, 2009, 5740 - 5748en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/39279
dc.descriptionPUBLISHEDen
dc.description.abstractMetal complexes [M(phtpy)(pztpy)](PF6)2 (phtpy = 4'-phenyl-2,2':6',2"-terpyridine, pztpy = 4'-(Npiperazinyl)- 2,2':6',2"-terpyridine, M = Ru, Os) were prepared and examined spectroscopically and electrochemically. The piperazine attachment was found to significantly modify the photophysical and electrochemical properties compared to the parent bis-terpyridine complexes, causing a red-shift of the 1MLCT (23 nm) and a substantial cathodic shift of the redox potential (0.30 V for Ru, 0.23 V for Os). Self-assembled monolayers (SAMs) of the complexes on polished gold electrodes were generated simply via the in situ formation of a dithiocarbamate (DTC) anchoring group at the terminal piperazinyl nitrogen on the pztpy ligand. Cyclic voltammetry revealed that the monolayers show excellent reversible behaviour and exceptional stability. The high stability of the SAMs is attributed to the strong bidentate attachment to the gold surface of the DTC tether and the favourable low oxidation potentials of the complexes which result from the electron-rich piperazine nitrogen on the pztpy ligand. Such DTC-based SAMs demonstrate a substantial improvement over commonly-employed thiol-based systems, and offer new scope for future development.en
dc.description.sponsorshipSFI-05PICA and E.I.-travel award for funding to F.M. and E.F. Dr. John O?Brien for NMR spectroscopic measurements.en
dc.format.extent5740en
dc.format.extent5748en
dc.language.isoenen
dc.relation.ispartofseriesChemistry a European Journalen
dc.relation.ispartofseries15en
dc.relation.ispartofseries23en
dc.rightsYen
dc.subjectChemistry
dc.title'Robust Self-Assembled Monolayers of Ru(II) and Os(II) Polypyridines on Gold Surfaces: Exploring New Potentials'en
dc.typeJournal Articleen
dc.contributor.sponsorScience Foundation Ireland (SFI)en
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/smdraperen
dc.identifier.rssinternalid64176en
dc.identifier.doihttp://dx.doi.org/10.1002/chem.200801930en
dc.subject.TCDThemeNanoscience & Materialsen
dc.subject.TCDThemeSmart & Sustainable Planeten


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