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dc.contributor.authorShe, Zhe
dc.contributor.authorYao, Zhen
dc.contributor.authorMénard, Hervé
dc.contributor.authorTobish, Sven
dc.contributor.authorLahaye, Dorothée
dc.contributor.authorChampness, Neil R.
dc.contributor.authorBuck, Manfred
dc.date.accessioned2020-07-14T23:34:11Z
dc.date.available2020-07-14T23:34:11Z
dc.date.issued2019-07-15
dc.identifier.citationShe , Z , Yao , Z , Ménard , H , Tobish , S , Lahaye , D , Champness , N R & Buck , M 2019 , ' Coordination controlled electrodeposition and patterning of layers of palladium/copper nanoparticles on top of a self-assembled monolayer ' , Nanoscale , vol. Advance Article . https://doi.org/10.1039/C9NR03927Aen
dc.identifier.issn2040-3364
dc.identifier.otherPURE: 259650222
dc.identifier.otherPURE UUID: cdd8698b-a2ac-46fe-955e-642b9130fbd8
dc.identifier.otherBibtex: urn:d5ca97d8f2025cd401000517e0c8ea09
dc.identifier.otherORCID: /0000-0003-1225-7607/work/59698693
dc.identifier.otherWOS: 000477704400007
dc.identifier.otherScopus: 85069635765
dc.identifier.urihttp://hdl.handle.net/10023/20251
dc.descriptionSupport by EPSRC (EP/E061303/1, EP/D048761/1) and the Chinese Scholarship Council and the University of St Andrews for a stipend (Z. Y.) are gratefully acknowledged.en
dc.description.abstractA scheme for the generation of bimetallic nanoparticles is presented which combines electrodeposition of one type of metal, coordinated to a self-assembled monolayer (SAM), with another metal deposited from the bulk electrolyte. In this way PdCu nanoparticles are generated by initial complexation of Pd2+ to a SAM of 3-(4-(pyridine-4-yl)phenyl)propane-1-thiol (PyP3) on Au/mica and subsequent reduction in an acidic aqueous CuSO4 electrolyte. Cyclic voltammetry reveals that the onset of Cu deposition is triggered by Pd reduction. Scanning tunneling microscopy (STM) shows that layers of connected particles are formed with an average thickness of less than 3 nm and lateral dimensions of particles in the range of 2 to 5 nm. In X-ray photoelectron spectra a range of binding energies for the Pd 3d signal is observed whereas the Cu 2p signal appears at a single binding energy, even though chemically different Cu species are present: normal and more noble Cu. Up to three components are seen in the N 1s signal, one originating from protonated pyridine moieties, the others reflecting the SAM-metal interaction. It is suggested that the coordination controlled electrodeposition yields layers of particles composed of a Pd core and a Cu shell with a transition region of a PdCu alloy. Deposited on top of the PyP3 SAM, the PdCu particles exhibit weak adhesion which is exploited for patterning by selective removal of particles employing scanning probe techniques. The potential for patterning down to the sub-10 nm scale is demonstrated. Harnessing the deposition contrast between native and PdCu loaded PyP3 SAMs, structures thus created can be developed into patterned continuous layers.
dc.language.isoeng
dc.relation.ispartofNanoscaleen
dc.rightsCopyright © 2019 The Author(s). This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1039/C9NR03927Aen
dc.subjectQD Chemistryen
dc.subjectDASen
dc.subject.lccQDen
dc.titleCoordination controlled electrodeposition and patterning of layers of palladium/copper nanoparticles on top of a self-assembled monolayeren
dc.typeJournal articleen
dc.description.versionPostprinten
dc.contributor.institutionUniversity of St Andrews.School of Chemistryen
dc.contributor.institutionUniversity of St Andrews.EaSTCHEMen
dc.identifier.doihttps://doi.org/10.1039/C9NR03927A
dc.description.statusPeer revieweden
dc.date.embargoedUntil2020-07-15


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