Formation of highly ordered self-assembled monolayers of alkynes on Au(111) substrate

2014
journal article
article
cris.lastimport.wos2024-04-09T23:30:26Z
dc.abstract.enSelf-assembled monolayers (SAMs), prepared by reaction of terminal n-alkynes (HC≡C(CH2)nCH3, n = 5, 7, 9, and 11) with Au(111) at 60 °C were characterized using scanning tunneling microscopy (STM), infrared reflection absorption spectroscopy (IRRAS), X-ray photoelectron spectroscopy (XPS), and contact angles of water. In contrast to previous spectroscopic studies of this type of SAMs, these combined microscopic and spectroscopic experiments confirm formation of highly ordered SAMs having packing densities and molecular chain orientations very similar to those of alkanethiolates on Au(111). Physical properties, hydrophobicity, high surface order, and packing density, also suggest that SAMs of alkynes are similar to SAMs of alkanethiols. The formation of high-quality SAMs from alkynes requires careful preparation and manipulation of reactants in an oxygen-free environment; trace quantities of O2 lead to oxidized contaminants and disordered surface films. The oxidation process occurs during formation of the SAM by oxidation of the −C≡C– group (most likely catalyzed by the gold substrate in the presence of O2).pl
dc.affiliationWydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiegopl
dc.contributor.authorŻaba, Tomasz - 162819 pl
dc.contributor.authorNoworolska, Agnieszkapl
dc.contributor.authorBowers, Carleen Morrispl
dc.contributor.authorBreiten, Benjaminpl
dc.contributor.authorWhitesides, George M.pl
dc.contributor.authorCyganik, Piotr - 127615 pl
dc.date.accessioned2015-02-09T11:35:32Z
dc.date.available2015-02-09T11:35:32Z
dc.date.issued2014pl
dc.description.admin[AB] Noworolska, Agnieszka 50000139
dc.description.number34pl
dc.description.physical11918-11921pl
dc.description.volume136pl
dc.identifier.doi10.1021/ja506647ppl
dc.identifier.eissn1520-5126pl
dc.identifier.eissn1943-2984pl
dc.identifier.issn0002-7863pl
dc.identifier.urihttp://ruj.uj.edu.pl/xmlui/handle/item/2911
dc.languageengpl
dc.language.containerengpl
dc.rightsDodaję tylko opis bibliograficzny*
dc.rights.licencebez licencji
dc.rights.uri*
dc.subtypeArticlepl
dc.titleFormation of highly ordered self-assembled monolayers of alkynes on Au(111) substratepl
dc.title.journalJournal of the American Chemical Societypl
dc.typeJournalArticlepl
dspace.entity.typePublication
cris.lastimport.wos
2024-04-09T23:30:26Z
dc.abstract.enpl
Self-assembled monolayers (SAMs), prepared by reaction of terminal n-alkynes (HC≡C(CH2)nCH3, n = 5, 7, 9, and 11) with Au(111) at 60 °C were characterized using scanning tunneling microscopy (STM), infrared reflection absorption spectroscopy (IRRAS), X-ray photoelectron spectroscopy (XPS), and contact angles of water. In contrast to previous spectroscopic studies of this type of SAMs, these combined microscopic and spectroscopic experiments confirm formation of highly ordered SAMs having packing densities and molecular chain orientations very similar to those of alkanethiolates on Au(111). Physical properties, hydrophobicity, high surface order, and packing density, also suggest that SAMs of alkynes are similar to SAMs of alkanethiols. The formation of high-quality SAMs from alkynes requires careful preparation and manipulation of reactants in an oxygen-free environment; trace quantities of O2 lead to oxidized contaminants and disordered surface films. The oxidation process occurs during formation of the SAM by oxidation of the −C≡C– group (most likely catalyzed by the gold substrate in the presence of O2).
dc.affiliationpl
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego
dc.contributor.authorpl
Żaba, Tomasz - 162819
dc.contributor.authorpl
Noworolska, Agnieszka
dc.contributor.authorpl
Bowers, Carleen Morris
dc.contributor.authorpl
Breiten, Benjamin
dc.contributor.authorpl
Whitesides, George M.
dc.contributor.authorpl
Cyganik, Piotr - 127615
dc.date.accessioned
2015-02-09T11:35:32Z
dc.date.available
2015-02-09T11:35:32Z
dc.date.issuedpl
2014
dc.description.admin
[AB] Noworolska, Agnieszka 50000139
dc.description.numberpl
34
dc.description.physicalpl
11918-11921
dc.description.volumepl
136
dc.identifier.doipl
10.1021/ja506647p
dc.identifier.eissnpl
1520-5126
dc.identifier.eissnpl
1943-2984
dc.identifier.issnpl
0002-7863
dc.identifier.uri
http://ruj.uj.edu.pl/xmlui/handle/item/2911
dc.languagepl
eng
dc.language.containerpl
eng
dc.rights*
Dodaję tylko opis bibliograficzny
dc.rights.licence
bez licencji
dc.rights.uri*
dc.subtypepl
Article
dc.titlepl
Formation of highly ordered self-assembled monolayers of alkynes on Au(111) substrate
dc.title.journalpl
Journal of the American Chemical Society
dc.typepl
JournalArticle
dspace.entity.type
Publication
Affiliations

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