Organic functionalization of germanium nanowires using arenediazonium salts

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dc.contributor.authorCollins, Gillian
dc.contributor.authorFleming, Peter G.
dc.contributor.authorO'Dwyer, Colm
dc.contributor.authorMorris, Michael A.
dc.contributor.authorHolmes, Justin D.
dc.contributor.funderIrish Research Council for Science, Engineering and Technologyen
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderHigher Education Authorityen
dc.date.accessioned2018-06-13T14:09:58Z
dc.date.available2018-06-13T14:09:58Z
dc.date.issued2011-03-04
dc.date.updated2018-06-11T09:25:13Z
dc.description.abstractThe formation of organic functionalization layers on germanium (Ge) nanowires was investigated using a new synthetic protocol employing arenediazonium salts. Oxide-free, H-terminated Ge nanowires were immersed in diazonium salt/acetonitrile solutions and the molecular interface of the functionalized nanowires was analyzed by reflectance infrared spectroscopy and X-ray photoelectron spectroscopy. The morphology of the modified nanowires was investigated by electron microscopy. Surface functionalization of the nanowires was found to be slow at room temperature, but proceeded efficiently with moderate heating (50 °C). The use of arenediazonium salts can result in the formation of aryl multilayers, however the thickness and uniformity of the organic layer was found to be strongly influenced by the nature of the substituents on the aromatic ring. Substituents attached to the 3-, 4-, and 5-ring positions hindered the formation of multilayers, while the presence of sterically bulky ring substituents affected the homogeneity of the organic layers. We successfully demonstrate that arenediazonium salts are very flexible precursors for nanowire functionalization, with the possibility to covalently attach a wide variety of aromatic ligands, offering the potential to alter the thickness of the resulting outer organic shell.en
dc.description.sponsorshipHigher Education Authority (under the framework of the INSPIRE programme, funded by the Irish Government’s Programme for Research in Third Level Institutions, Cycle 4, National Development Plan 2007-2013)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationCollins, G., Fleming, P., O’Dwyer, C., Morris, M. A. and Holmes, J. D. (2011) 'Organic Functionalization of Germanium Nanowires using Arenediazonium Salts', Chemistry of Materials, 23(7), pp. 1883-1891. doi: 10.1021/cm103573men
dc.identifier.doi10.1021/cm103573m
dc.identifier.endpage1891en
dc.identifier.issn0897-4756
dc.identifier.journaltitleChemistry of Materialsen
dc.identifier.startpage1883en
dc.identifier.urihttps://hdl.handle.net/10468/6294
dc.identifier.volume23en
dc.language.isoenen
dc.publisherAmerican Chemical Society (ACS)en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Centre for Science Engineering and Technology (CSET)/08/CE/I1432/IE/CSET CRANN: 2nd Term funding/en
dc.relation.urihttps://pubs.acs.org/doi/abs/10.1021/cm103573m
dc.rights© 2011 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Chemistry of Materials, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/abs/10.1021/cm103573men
dc.subjectNanomaterialsen
dc.subjectSemiconductorsen
dc.subjectSurface and interfacial phenomenaen
dc.titleOrganic functionalization of germanium nanowires using arenediazonium saltsen
dc.typeArticle (peer-reviewed)en
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