Domain Structure of Self-Assembled Alkanethiol Monolayers on Gold

Schönenberger, Christian; Jorritsma, J.; Sondag‐Huethorst, J. A. M.; Fokkink, L. G. J.

doi:10.1021/j100010a042

Cited by 204 publications

(231 citation statements)

References 4 publications

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“…3 In Fig. 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]).…”

Section: Thiolate Layers and The Electrodeposition Of Metalsmentioning

confidence: 98%

“…Unfortunately, it is impossible to deduce a structural model for them: firstly, the mechanism of tunnelling on thiolates is still under debate, hence the depth is difficult to interpret; secondly, molecular resolution of the grooves is very difficult. The simplest idea is an antiphase boundary where the S -S interdomain distance is larger than the intradomain distance of J3 atomic gold distances, but also missing rows of thiolate molecules have been suggested [55].…”

Section: Thiolate Layers and The Electrodeposition Of Metalsmentioning

confidence: 99%

See 1 more Smart Citation

Copper Electrodeposition on Alkanethiolate Covered Gold Electrodes*

Cavalleri¹,

Bittner²,

Kind³

et al. 1999

Zeitschrift Für Physikalische Chemie

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We have investigated the structure and thermal dynamics of alkanethiolate layers on Au(lll) with variable temperature scanning tunnelling microscopy (STM), X-ray photoelectron spectroscopy (XPS) and voltammetry. The results build the basis for a study of electrodeposition of copper on alkanethiolate-covered Au(lll). Electrodeposition has been studied as a function of the thiolate chain length, the deposition potential and the temperature. Time-resolved [1][2][3][4][5][6][7].

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Section: Thiolate Layers and The Electrodeposition Of Metalsmentioning

confidence: 98%

Section: Thiolate Layers and The Electrodeposition Of Metalsmentioning

confidence: 99%

Copper Electrodeposition on Alkanethiolate Covered Gold Electrodes*

Cavalleri¹,

Bittner²,

Kind³

et al. 1999

Zeitschrift Für Physikalische Chemie

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“…It is now well known that the alkanethiols are arranged in striped structures when the coverage is low [8][9][10] and in a (√3 x √3)R30° or c(4√3 x 2√3) structure with a tilt angle of 30° from the surface normal when the coverage becomes high [11]. STM also revealed that there are many defects in the SAMs such as missing rows and pits [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical oxidative adsorption and reductive desorption of a self-assembled monolayer of decanethiol on the Au(111) surface in KOH+ethanol solution

Sumi

Wano

Uosaki

2003

Journal of Electroanalytical Chemistry

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The electrochemical characteristics of an Au(111) electrode were investigated in 0.1 M KOH ethanol solutions containing various concentrations of decanethiol. Anodic and cathodic peaks corresponding to the oxidative adsorption and reductive desorption, respectively, of a self-assembled monolayer (SAM) of decanethiol were observed. Both peaks negatively shifted with the increase in the thiol concentration by ca. 57 mV/decade, showing that the redox process is a one-electron process. The adsorbed amount determined from the charge corresponding to the reductive desorption increased with an increase in the decanethiol concentration but never reached the saturated amount as long as the cyclic voltammograms were continuously recorded with the sweep rate of 10 -200 mV s-1. It increased with the holding time at +0.1 V, which was much more positive than the anodic peak potential, and reached the saturated amount in ca. 10 min in the 10 μM thiol solution. The reductive peak potential also negatively shifted with the holding time but for a longer period. It kept shifting for ca. 60 min in the 10 μM thiol solution, which is much longer than the time when the adsorbed amount reached the saturated value. These results suggest that the formation of a highly ordered SAM requires a much longer time than the adsorption of the thiol.2

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“…Alkanethiolates occupy three-fold hollow sites of the Au (111) surface with S-S spacings of 4.99Å, and the molecular axes are tilted by 30 • -35 • with respect to the surface normal. [13][14][15][16][17][18][19][20][21][22][23][30][31][32][33][34][35] The sulfur-pairing model involves a c(4 × 2) superlattice of the hexagonal lattice, where alkanethiolates form sulfur head group dimers with S-S spacings of 2.2Å. [9][10][11][12][24][25][26] Furthermore, other structural models have been reported, including n × √ 3 unit cells (8 ≤ n ≤ 10).…”

mentioning

confidence: 99%

n-alkyl thiol head-group interactions with the Au(111) surface

2001

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State-of-the-art first principles calculations based on density functional theory were performed on CH 3 (CH 2 ) n−1 S-Au(111) systems. We show that the adsorption site of methylthiolate at low coverage on the Au(111) surface is the fcc site, not the hcp site as has been recently reported. Further, we report results for chain length dependency and the electronic structure of the system.The interaction between organic materials and solid surfaces has been extensively studied because of the broad range of industrial applications. 1-4 Self-assembled monolayers (SAMs) hold special interest, because the presence of the thiol group greatly strengthens the molecule-surface interactions, inducing order in the layer. SAMs have important potential applications in industry, such as sensors, transducers, detectors, packaging and insulating layers for integrated circuits, functionalization of surfaces, thin coatings for electrodes, and corrosion inhibition.The long-chain alkane thiols [CH 3 (CH 2 ) n−1 SH, or C n ] form SAMs on the Au(111) surface. Their simplicity, highly ordered structures, and chemical stability make these systems ideal for study with a variety of techniques including atomic force microscopy, 5,6 infrared spectroscopy, 7,8 high-resolution electron-energy-loss spectroscopy, 9 grazing X-ray diffraction, 10 scanning tunneling microscopy (STM), 11-17 scanning probe microscopy, 18 lowenergy electron diffraction (LEED), [19][20][21] He atom diffraction, 22,23 and theory. 25-31 Despite 1

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Domain Structure of Self-Assembled Alkanethiol Monolayers on Gold

Cited by 204 publications

References 4 publications

Copper Electrodeposition on Alkanethiolate Covered Gold Electrodes*

Copper Electrodeposition on Alkanethiolate Covered Gold Electrodes*

Electrochemical oxidative adsorption and reductive desorption of a self-assembled monolayer of decanethiol on the Au(111) surface in KOH+ethanol solution

n-alkyl thiol head-group interactions with the Au(111) surface

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