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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.identifier259650222
dc.identifiercdd8698b-a2ac-46fe-955e-642b9130fbd8
dc.identifier000477704400007
dc.identifier85069635765
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.otherBibtex: urn:d5ca97d8f2025cd401000517e0c8ea09
dc.identifier.otherORCID: /0000-0003-1225-7607/work/59698693
dc.identifier.urihttps://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.format.extent390725
dc.language.isoeng
dc.relation.ispartofNanoscaleen
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.contributor.sponsorEPSRCen
dc.contributor.sponsorEPSRCen
dc.contributor.institutionUniversity of St Andrews. School of Chemistryen
dc.contributor.institutionUniversity of St Andrews. EaSTCHEMen
dc.identifier.doi10.1039/C9NR03927A
dc.description.statusPeer revieweden
dc.date.embargoedUntil2020-07-15
dc.identifier.grantnumberEP/E061303/1en
dc.identifier.grantnumberEP/D048761/1en


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