Atomic Force Microscopy and Angular-Dependent X-ray Photoelectron Spectroscopy Studies of Anchored Quaternary Ammonium Salt Biocides on Quartz Surfaces.

ResearchSpace/Manakin Repository

Show simple item record

dc.contributor.author Mathew, Rachel en
dc.contributor.author Cooney, Ralph en
dc.contributor.author Malmstrom Pendred, Jenny en
dc.contributor.author Doyle, Colin S en
dc.date.accessioned 2019-03-11T20:35:19Z en
dc.date.issued 2018-04-11 en
dc.identifier.issn 0743-7463 en
dc.identifier.uri http://hdl.handle.net/2292/45899 en
dc.description.abstract A siloxane surface-anchored quaternary ammonium salt (AQAS: BIOSAFE HM4100 in this study) has been chemisorbed onto a quartz substrate. The aim of this study is to elucidate, using atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS), the structure of the chemisorbed AQAS layers. The AQAS biocide includes a C18 alkyl chain previously invoked in lysis potency. The AQAS coverage appears in zones on the surface, which include a first layer (2.6 ± 0.1 nm) and multilayering that were explored using AFM. The XPS data exhibited two N 1s signals at about 402 and 399 eV, with only the former exhibiting angular dependence. This signal at 402 eV was assigned to the first anchored layer with perpendicular orientation determined by the AQAS anchoring to the surface. In preliminary AFM studies of bacteria on these AQAS surfaces, perturbations on the Staphylococcus aureus cells and the degradation of Escherichia coli cells suggest lysis potency. en
dc.format.medium Print-Electronic en
dc.language eng en
dc.relation.ispartofseries Langmuir : the ACS journal of surfaces and colloids en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title Atomic Force Microscopy and Angular-Dependent X-ray Photoelectron Spectroscopy Studies of Anchored Quaternary Ammonium Salt Biocides on Quartz Surfaces. en
dc.type Journal Article en
dc.identifier.doi 10.1021/acs.langmuir.8b00535 en
pubs.issue 16 en
pubs.begin-page 4750 en
pubs.volume 34 en
dc.rights.holder Copyright: The author en
dc.identifier.pmid 29597350 en
pubs.end-page 4761 en
pubs.publication-status Published en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Research Support, Non-U.S. Gov't en
pubs.subtype Journal Article en
pubs.elements-id 736111 en
pubs.org-id Engineering en
pubs.org-id Chemical and Materials Eng en
dc.identifier.eissn 1520-5827 en
pubs.record-created-at-source-date 2018-03-31 en
pubs.dimensions-id 29597350 en


Full text options

Full text for this item is not available in ResearchSpace.

Find Full text

This item appears in the following Collection(s)

Show simple item record

Share

Search ResearchSpace


Advanced Search

Browse