1994
DOI: 10.1021/la00022a004
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Abstract: Alkanethiols CHsfCtLin-iSH (Cn, n = 4, 6, 8, 10) were self-assembled from ethanolic solutions onto a single-crystal Au( 111) surface and characterized using an ultrahigh vacuum scanning tunneling microscope (STM). Short-chain homologues (C4 and Cg) exhibited a two-dimensional (2-D) liquid phase at room temperature. Facile mass transport of surface gold atoms was observed in the presence of the liquid phase. The short-chain homologues exhibited slow desorption of surface thiolate which led to the nucleation and… Show more

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Cited by 261 publications
(275 citation statements)
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“…Butanethiol has a short, 4-carbon chain with high surface mobility on Au films, while dodecanethiol has a 12-carbon chain that forms crystalline monolayers (17,18). The hydrophobicity of these two species are similar (110°and 110.5°, respectively), but planar dodecanethiol monolayers are crystalline, while the liquid-like butanethiol monolayers adopt more random conformations.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Butanethiol has a short, 4-carbon chain with high surface mobility on Au films, while dodecanethiol has a 12-carbon chain that forms crystalline monolayers (17,18). The hydrophobicity of these two species are similar (110°and 110.5°, respectively), but planar dodecanethiol monolayers are crystalline, while the liquid-like butanethiol monolayers adopt more random conformations.…”
Section: Resultsmentioning
confidence: 99%
“…The large free energy of the terminal methyl group makes the dodecane-lipid tailgroup intersection quite weak and a likely location to nucleate a defect. Chain mobility may similarly play a role, as butanethiol exists in a disordered, fluid-like phase on planar surfaces (17,18) compared to the crystalline dodecane, allowing the chain to reorient as necessary. The implications from the interplay between molecular mobility and hydrophobicity in terms of interface formation extend the possible applications to particle and drug delivery.…”
Section: Resultsmentioning
confidence: 99%
“…SAMs with longer carbon chains form more dense monolayers due to hydrophobic interactions of the chains. The general rule of thumb is that C 11 or greater gives packed films [163,164], but Mirksy et al reported C surf drift due to thiol desorption using a C 11 SAM but not for a C 16 SAM [154,165]. SAM desorption is one reason why a sensor might have a response to a blank solution.…”
Section: Self-assembled Monolayersmentioning
confidence: 99%
“…4 [10,[52][53][54][55]. At lower coverage (attainable by vapour phase dosing of thiols [56] or by heating above 370 [57,58]) and for short chain thiolates we detected striped structures [58] (see also [56,57,59,60]). All these structures can exist in different domains separated by domain walls.…”
Section: Thiolate Layers and The Electrodeposition Of Metalsmentioning
confidence: 99%