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dc.contributor.authorRechmann, Julian
dc.contributor.authorKrzywiecki, Maciej
dc.contributor.authorErbe, Andreas
dc.date.accessioned2019-08-26T10:24:00Z
dc.date.available2019-08-26T10:24:00Z
dc.date.created2019-06-09T22:53:07Z
dc.date.issued2019
dc.identifier.citationLangmuir. 2019, 35 6888-6897.nb_NO
dc.identifier.issn0743-7463
dc.identifier.urihttp://hdl.handle.net/11250/2610967
dc.description.abstractThe effect of the solvent on the formation of thiol self-assembled monolayers (SAMs) on oxide-covered, reactive metals is more involved than in the well-studied gold–thiol system. In this work, copper covered with a native oxide was modified with 1-octadecanethiol (ODT) in either tetrahydrofuran or ethanol. Infrared spectroscopy indicated the formation of crystalline chain packing of alkyl chains from both solvents. Surface coverage was approximately equal in both systems, with differences in tilt angles of the chains. A detailed analysis by X-ray photoelectron spectroscopy showed the formation of Cu2S and copper-bound carbon when the adsorption was carried out in ethanol. This observation can be explained by the cleavage of the C–S bond in ODT during adsorption. Based on the analogy of preparations, we reason that the solvation of ODT in ethanol must be such that it weakens the C–S bond in ODT, thus enabling the cleavage of this bond. Based on the evidence presented here, it is not possible to distinguish between surface solvation and bulk solvation. Electrochemical linear sweep voltammetry shows that SAMs from both solvents have an enhancing protective effect compared to the native oxide layer. The results from this work show interesting possibilities for the preparation of adsorbed monolayers with chemical interaction to reactive metals, with some similarities to carbene-based SAMs.nb_NO
dc.language.isoengnb_NO
dc.publisherAmerican Chemical Societynb_NO
dc.relation.urihttps://pubs.acs.org/articlesonrequest/AOR-SRw7SJyjXeb3cInwzwSk
dc.titleCarbon-sulfur bond cleavage during adsorption of octadecane thiol to copper in ethanolnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.pagenumber6888-6897nb_NO
dc.source.volume35nb_NO
dc.source.journalLangmuirnb_NO
dc.identifier.doi10.1021/acs.langmuir.9b00686
dc.identifier.cristin1703676
dc.description.localcode© American Chemical Society 2019. This is the authors accepted and refereed manuscript to the article. Locked until 3.5.2020 due to copyright restrictions.nb_NO
cristin.unitcode194,66,35,0
cristin.unitnameInstitutt for materialteknologi
cristin.ispublishedtrue
cristin.fulltextpreprint
cristin.fulltextpostprint
cristin.qualitycode2


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