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dc.contributor.authorBlach-Watson, JA
dc.contributor.authorWatson, GS
dc.contributor.authorBrown, CL
dc.contributor.authorMyhra, S
dc.contributor.editorH. Kobayashi
dc.date.accessioned2017-05-03T11:07:44Z
dc.date.available2017-05-03T11:07:44Z
dc.date.issued2004
dc.identifier.issn0169-4332
dc.identifier.doi10.1016/j.apsusc.2004.05.179
dc.identifier.urihttp://hdl.handle.net/10072/5754
dc.description.abstractSelf-assembled monolayers (SAMs) of alkanethiols on gold are ideal model systems for studying the emission processes of secondary ions from thin organic layers on metal substrates under keV ion bombardment. In this experimental study, we focus on the emission processes of gold-hexadecanethiolate cluster ions, which are not well understood yet. For this purpose, we carried out time-of-flight secondary ion mass spectrometry (ToF-SIMS) measurements on SAMs of hexadecanethiols (HDT, CH3---(CH2)15---SH) on gold substrates. The gold-hexadecanethiolate cluster ions AuxMy- show intense peaks in mass spectra of negatively charged secondary ions under 10 keV Ar+ bombardment. Around the corresponding peaks, a characteristic peak pattern of additional ions is observed. We analyzed the contribution of different cluster ions formed by an attachment or a loss of several hydrogen atoms and their isotope patterns to the individual peaks of the peak pattern. We found two different types of gold-hexadecanethiolate cluster ions. The first type has only one parent ion with no hydrogen atom attached. The second type has two parent ions, one without attachment of hydrogen atoms and another with one additional hydrogen atom. Moreover, we found a universally valid sum formula, which predicts the most intense peak in the peak pattern of all gold-hexadecanethiolate cluster ions analyzed.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoen_US
dc.publisherElsevier Science
dc.publisher.placeNetherlands
dc.relation.ispartofpagefrom164
dc.relation.ispartofpageto169
dc.relation.ispartofjournalApplied Surface Science
dc.relation.ispartofvolume235
dc.subject.fieldofresearchHistory and Archaeology
dc.subject.fieldofresearchcode21
dc.titleUV patterning of polyimide: differentiation and characterization of surface chemistry and structure
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.date.issued2015-02-12T00:42:53Z
gro.hasfulltextNo Full Text
gro.griffith.authorMyhra, Sverre
gro.griffith.authorWatson, Jolanta A.
gro.griffith.authorBrown, Chris L.
gro.griffith.authorWatson, Gregory S.


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