The interaction of solid water with methyl-terminated self-assembled monolayers of alkanethiols containing odd and even numbers of carbon atoms

dc.contributor.advisorRowntree, Paul
dc.contributor.authorAbner, Sharon
dc.date.accessioned2017-09-06T17:47:03Z
dc.date.available2017-09-06T17:47:03Z
dc.date.copyright2017-04
dc.date.created2017-08-25
dc.date.issued2017-09-06
dc.degree.departmentDepartment of Chemistryen_US
dc.degree.grantorUniversity of Guelphen_US
dc.degree.nameMaster of Scienceen_US
dc.degree.programmeChemistryen_US
dc.description.abstractThe odd – even effect in the wetting of methyl-terminated self-assembled monolayers (SAMs) have been previously observed on a microscopic level and in ambient conditions. However, fundamental understanding of the interaction of a water adsorbate with the surface remains inconclusive. Using infrared reflection-absorption spectroscopy (IRRAS), the average structural orientations of water molecules deposited on SAMs with even and odd number of carbon atoms, were diagnosed under cryogenic and UHV conditions. A peak deconvolution method was developed in this work to unambiguously monitor changes in the broad O-H stretch band of solid water as the system was manipulated. This analysis confirmed that the geometry of the methyl terminal groups at the interface influences the as-deposited water molecules’ interactions with the substrate, and more specifically, the peak positions. After the transition from amorphous solid water (ASW) to crystalline ice (CI), molecular orientations of water adsorbed on the surface were not affected by the interaction with the even and odd SAMs. Moreover, the peak analysis revealed a transformation of the dominant width broadening component from Gaussian (heterogeneous broadening factors) to Lorentzian (homogeneous broadening factors) during crystallization of water deposited on all SAMs.en_US
dc.identifier.urihttp://hdl.handle.net/10214/11541
dc.language.isoenen_US
dc.publisherUniversity of Guelphen_US
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectodd – even effecten_US
dc.subjectself-assembled monolayers (SAMs)en_US
dc.subjectinfrared reflection-absorption spectroscopy (IRRAS)en_US
dc.subjectamorphous solid water (ASW)en_US
dc.subjectcrystalline ice (CI)en_US
dc.titleThe interaction of solid water with methyl-terminated self-assembled monolayers of alkanethiols containing odd and even numbers of carbon atomsen_US
dc.typeThesisen_US

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