Show simple item record

dc.contributor.authorWatson, Jolantaen_US
dc.contributor.authorWatson, Gregoryen_US
dc.contributor.authorBrown, Chrisen_US
dc.contributor.authorMyhra, Sverreen_US
dc.contributor.editorH. Kobayashien_US
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.en_US
dc.publisherElsevier Scienceen_US
dc.relation.ispartofjournalApplied Surface Scienceen_US
dc.subject.fieldofresearchHISTORY AND ARCHAEOLOGYen_US
dc.titleUV patterning of polyimide: differentiation and characterization of surface chemistry and structureen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.hasfulltextNo Full Text

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record