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Self-assembled monolayers on silicon : deposition and surface chemistry
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dc.contributor.advisor | Hähner, Georg | |
dc.contributor.advisor | O'Hagan, David | |
dc.contributor.author | Adamkiewicz, Malgorzata | |
dc.coverage.spatial | 156 | en_US |
dc.date.accessioned | 2013-08-07T09:18:03Z | |
dc.date.available | 2013-08-07T09:18:03Z | |
dc.date.issued | 2013-11-29 | |
dc.identifier | uk.bl.ethos.577292 | |
dc.identifier.uri | https://hdl.handle.net/10023/3938 | |
dc.description.abstract | Fabrication of surfaces with versatile functional groups is an important research area. Hence, it is essential to control and tune the surface properties in a reliable manner. Vinyl-terminated self-assembled monolayers (SAMs) offer significant flexibility for further chemical modification and can serve as a versatile starting point for tailoring of surface properties. Here a synthetic route for the preparation of vinyl-terminated trichlorosilane self-assembling molecules: 9-decenyltrichlorosilane (CH₂=CH-(CH₂)₈-SiCl₃), 10-undecenyltrichlorosilane (CH₂=CH-(CH₂)₉-SiCl₃), and 14-pentadecenyltrichlorosilane (CH₂=CH-(CH₂)₁₃-SiCl₃) is presented. These molecules were used for the preparation of SAMs in either liquid or vapour phase processes. Commercially available methyl-terminated self-assembling molecules: decyltrichlorosilane (CH₃-(CH₂)₉-SiCl₃) and octadecanetrichlorosilane (CH₃-(CH₂)₁₇-SiCl₃) were used as controls. The resultant films were characterised by X-ray photoelectron spectroscopy (XPS), contact angle analysis, ellipsometry, and atomic force microscopy (AFM). Well defined, vinyl-terminated SAMs were further chemically modified with carbenes (:CCl₂, :CBr₂, :CF₂) and hexafluoroacetone azine (HFAA). The reactions were performed in the liquid or the vapour phase. The resulting SAMs were characterised using the same methods as for the vinyl-terminated monolayers. Successful modification was confirmed by the appearance of new signals in the XPS spectrum, with simultaneous changes in water contact angle values and unchanged thickness values. Methyl-terminated SAMs were also exposed to carbenes and HFAA as a control system. These are the first examples of C-C bond formation on SAMs in the vapour phase. | en_US |
dc.language.iso | en | en_US |
dc.publisher | University of St Andrews | |
dc.rights | Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported | |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/ | |
dc.subject | Self-assembled monolayers | en_US |
dc.subject | Surface chemistry | en_US |
dc.subject | Trichlorosilanes | en_US |
dc.subject | Vinyl-terminated SAMs | en_US |
dc.subject | Carbenes | en_US |
dc.subject | Vapour phase deposition | en_US |
dc.subject | SAMs modification | en_US |
dc.subject.lcc | QD509.M65A3 | |
dc.subject.lcsh | Monomolecular films | en_US |
dc.subject.lcsh | Chlorosilanes--Synthesis | en_US |
dc.subject.lcsh | Silicon--Surfaces | en_US |
dc.subject.lcsh | Surface chemistry | en_US |
dc.title | Self-assembled monolayers on silicon : deposition and surface chemistry | en_US |
dc.type | Thesis | en_US |
dc.type.qualificationlevel | Doctoral | en_US |
dc.type.qualificationname | PhD Doctor of Philosophy | en_US |
dc.publisher.institution | The University of St Andrews | en_US |
dc.publisher.department | School of Chemistry | en_US |
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