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

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

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dc.contributor.author Żaba, Tomasz [USOS94975] pl
dc.contributor.author Noworolska, Agnieszka pl
dc.contributor.author Bowers, Carleen Morris pl
dc.contributor.author Breiten, Benjamin pl
dc.contributor.author Whitesides, George M. pl
dc.contributor.author Cyganik, Piotr [SAP11016290] pl
dc.date.accessioned 2015-02-09T11:35:32Z
dc.date.available 2015-02-09T11:35:32Z
dc.date.issued 2014 pl
dc.identifier.issn 0002-7863 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/2911
dc.language eng pl
dc.rights Dodaję tylko opis bibliograficzny *
dc.rights.uri *
dc.title Formation of highly ordered self-assembled monolayers of alkynes on Au(111) substrate pl
dc.type JournalArticle pl
dc.description.physical 11918-11921 pl
dc.abstract.en 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). pl
dc.description.volume 136 pl
dc.description.number 34 pl
dc.identifier.doi 10.1021/ja506647p pl
dc.identifier.eissn 1520-5126 pl
dc.identifier.eissn 1943-2984 pl
dc.title.journal Journal of the American Chemical Society pl
dc.language.container eng pl
dc.affiliation Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego pl
dc.subtype Article pl
dc.rights.original bez licencji pl
.pointsMNiSW [2014 A]: 40


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