The Role of Physisorption and Chemisorption in the Oscillatory Adsorption of Organosilanes on Aluminium Oxide

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dc.citation.issue3
dc.citation.volume11
dc.contributor.authorSims RA
dc.contributor.authorHarmer SL
dc.contributor.authorQuinton JS
dc.coverage.spatialSwitzerland
dc.date.accessioned2023-12-15T01:08:33Z
dc.date.accessioned2024-07-25T06:51:35Z
dc.date.available2019-03-04
dc.date.available2023-12-15T01:08:33Z
dc.date.available2024-07-25T06:51:35Z
dc.date.issued2019-03
dc.description.abstractThe effect of physisorbed and chemisorbed species on the time-dependent self-assembly mechanism of organosilane films has been investigated on aluminium oxide using X-ray Photoelectron Spectroscopy. The role of physisorbed species was determined through their removal using a simple rinsing procedure while monitoring film substrate coverage. Removing physisorbed species from Propyldimethylmethoxysilane films, shown to follow a Langmuir-type adsorption profile, reduces the substrate coverage initially but quickly results in coverages equivalent to films that did not undergo a rinsing procedure. This indicates that all Propyldimethylmethoxysilane molecules are covalently bound to the substrate following 15 s of film growth. Removing physisorbed species from films, which have been shown to follow an oscillatory adsorption profile, Propyltrimethoxysilane and Propylmethyldimethoxysilane, reveal the persistence of these oscillations despite a reduction in silane substrate coverage. These results not only confirm the presence of two thermodynamically favourable phases in the condensation equilibrium reaction as physisorbed and chemisorbed species, but also indicate that the desorption of species during film growth involves both states of chemical binding.
dc.format.paginationE410-
dc.identifier.author-urlhttps://www.ncbi.nlm.nih.gov/pubmed/30960394
dc.identifier.citationSims RA, Harmer SL, Quinton JS. (2019). The Role of Physisorption and Chemisorption in the Oscillatory Adsorption of Organosilanes on Aluminium Oxide.. Polymers (Basel). 11. 3. (pp. E410-).
dc.identifier.doi10.3390/polym11030410
dc.identifier.eissn2073-4360
dc.identifier.elements-typejournal-article
dc.identifier.issn2073-4360
dc.identifier.numberARTN 410
dc.identifier.piipolym11030410
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/71039
dc.languageeng
dc.publisherMDPI (Basel, Switzerland)
dc.relation.isPartOfPolymers (Basel)
dc.rights(c) 2019 The Author/s
dc.rightsCC BY 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectchemisorption
dc.subjectorganosilane
dc.subjectoscillatory adsorption
dc.subjectphysisorption
dc.subjectself-assembly
dc.titleThe Role of Physisorption and Chemisorption in the Oscillatory Adsorption of Organosilanes on Aluminium Oxide
dc.typeJournal article
pubs.elements-id452222
pubs.organisational-groupOther
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