Organic functionalization of germanium nanowires using arenediazonium salts

Show simple item record Collins, Gillian Fleming, Peter G. O'Dwyer, Colm Morris, Michael A. Holmes, Justin D. 2018-06-13T14:09:58Z 2018-06-13T14:09:58Z 2011-03-04
dc.identifier.citation Collins, 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/cm103573m en
dc.identifier.volume 23 en
dc.identifier.startpage 1883 en
dc.identifier.endpage 1891 en
dc.identifier.issn 0897-4756
dc.identifier.doi 10.1021/cm103573m
dc.description.abstract The 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.sponsorship Higher 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.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Chemical Society (ACS) en
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 en
dc.subject Nanomaterials en
dc.subject Semiconductors en
dc.subject Surface and interfacial phenomena en
dc.title Organic functionalization of germanium nanowires using arenediazonium salts en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Colm O'Dwyer, Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: en
dc.internal.authorcontactother Justin D. Holmes, Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: en
dc.internal.availability Full text available en 2018-06-11T09:25:13Z
dc.description.version Accepted Version en
dc.internal.rssid 75834818
dc.contributor.funder Irish Research Council for Science, Engineering and Technology en
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder Higher Education Authority en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Chemistry of Materials en
dc.internal.copyrightchecked Yes en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress en
dc.internal.IRISemailaddress en
dc.relation.project info:eu-repo/grantAgreement/SFI/SFI Centre for Science Engineering and Technology (CSET)/08/CE/I1432/IE/CSET CRANN: 2nd Term funding/ en

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