1,6-Hexanedithiol Monolayers on Au(111):  A Multitechnique Structural Study

Leung, T. Y. B.; Gerstenberg, M.C.; Lavrich, David J.; Scoles, G.; Schreiber, Frank; Poirier, G. E.

doi:10.1021/la9906222

Cited by 116 publications

(175 citation statements)

References 25 publications

(62 reference statements)

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“…Dithiol molecules can in principle binds to gold through both terminal sulfur atoms so that the molecule would anchor to two points on the surface. Such examples are reported for hexanedithiol [22], benzenedithiol [19] on Au(111) and octanedithiol on Ag(111) [4]. Given that sulfur adsorbs on the three-fold hollow site of Au(111), this double end adsorption results into a back-folded geometry where the molecule forms a bridge over the surface.…”

Section: Resultsmentioning

confidence: 92%

Alkylthiol self-assembled monolayers on Au(111) with tailored tail groups for attaching gold nanoparticles

et al. 2017

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To cite this version:V Y Kutsenko, L Lopatina, Léo Bossard-Giannesini, O Marchenko, Olivier Pluchery, et al.. Alkylthiol self-assembled monolayers on Au(111) with tailored tail groups for attaching gold nanoparticles. Nanotechnology, Institute of Physics, 2017, 28 (23) by their tail groups: 1,9-nonanedithiol (NDT) and 1,4-butanedithiol (BDT) and 11-mercaptoundecanol (MUOH). STM reveals very different morphologies: hexagonal lattice for MUOH and parallel rows for NDT and BDT. In the case of NDT, we find that the thiol tail groups may form disulfide bridges for long immersion times. The availability of -SH group for chemical reactions is checked by attaching gold nanoparticles (AuNPs). When the thiol tail group is available, AuNPs readily attach as shown with atomic force microscopy (AFM). When disulfide bridges are formed the gold surface is not able to bind nanoparticles.

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Section: Resultsmentioning

confidence: 92%

Alkylthiol self-assembled monolayers on Au(111) with tailored tail groups for attaching gold nanoparticles

et al. 2017

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“…The most extensively investigated types of SAMs are alkanethiols on gold, [73][74][75][76][77][78][79][80] silver, [81][82][83][84] copper, [85][86][87] palladium, [88,89] and platinum [90,91] substrates. However, Au is most commonly used because it is easy to deposit as planar thin films and to pattern with conventional lithographic tools or chemical etchants.…”

Section: Sams On Metalsmentioning

confidence: 99%

Molecular Self‐Assembled Monolayers and Multilayers for Organic and Unconventional Inorganic Thin‐Film Transistor Applications

DiBenedetto¹,

Facchetti²,

Ratner³

et al. 2009

Advanced Materials

572

544

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Principal goals in organic thin‐film transistor (OTFT) gate dielectric research include achieving: (i) low gate leakage currents and good chemical/thermal stability, (ii) minimized interface trap state densities to maximize charge transport efficiency, (iii) compatibility with both p‐ and n‐ channel organic semiconductors, (iv) enhanced capacitance to lower OTFT operating voltages, and (v) efficient fabrication via solution‐phase processing methods. In this Review, we focus on a prominent class of alternative gate dielectric materials: self‐assembled monolayers (SAMs) and multilayers (SAMTs) of organic molecules having good insulating properties and large capacitance values, requisite properties for addressing these challenges. We first describe the formation and properties of SAMs on various surfaces (metals and oxides), followed by a discussion of fundamental factors governing charge transport through SAMs. The last section focuses on the roles that SAMs and SAMTs play in OTFTs, such as surface treatments, gate dielectrics, and finally as the semiconductor layer in ultra‐thin OTFTs.

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“…41 The results were then explained by the strong molecule/substrate interaction in the striped phases, which was interpreted as a consequence of the strong, but, not sitespecific, interaction of both sulfurs with the gold surface. This looping construction will impede the formation of thiolterminated SAMs and inhibit their application in molecular electronics, as was pointed out in their work.…”

Section: Introductionmentioning

confidence: 98%

“…This looping construction will impede the formation of thiolterminated SAMs and inhibit their application in molecular electronics, as was pointed out in their work. 41 Recently, the same group asserted the importance of the problem again. 42 On the other hand, Bard et al used HSC 6 SH as a linker to construct a copper(I)-dithiol multilayer thin film, which was evidenced by ellipsometric, X-ray photoelectron and fluorescence spectroscopic, and electrochemical techniques.…”

Section: Introductionmentioning

confidence: 99%

1,6-Hexanedithiol Self-Assembled Monolayers on Au(111) Investigated by Electrochemical, Spectroscopic, and Molecular Mechanics Methods

Qu¹,

Kim²,

Lee³

et al. 2009

J. Phys. Chem. C

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1,6-Hexanedithiol (HSC 6 SH) self-assembled monolayers (SAMs) on Au(111) were formed in a 1 mM ethanolic solution and were investigated by voltammetry in 0.1 M aqueous KOH solution. HSC 6 SH SAMs on Au(111) were further probed by X-ray photoelectron spectroscopy (XPS), scanning tunneling microscopy (STM), sum frequency generation spectroscopy (SFG), and molecular mechanics calculation (MMC). An identical investigation was performed with the self-assembly of hexanethiol (C 6 SH) on Au(111) for comparison. Linear sweep voltammograms showed that a full monolayer of thiolate (7.6 ((0.2) × 10 -10 mol -2) chemisorbed on Au(111) with both HSC 6 SH and C 6 SH, while the peak potential of the electroreduction of the former assembly was more negative than that of the latter. XPS revealed that two different forms of sulfur existed at HSC 6 SH SAMs on Au(111), i.e. a thiolate and a thiol. The STM image could not be resolved with HSC 6 SH SAMs, while it was atomically well-defined with the C 6 SH case. SFG results showed that alkyl chains within the HSC 6 SH SAMs were in an all-trans conformation. Thus the experimental results concluded that densely packed and higly oriented HSC 6 SH SAMs could be successfully formed on Au(111) with the incubation conditions in the practical solution. MMC presented that HSC 6 SH SAMs were more stable than C 6 SH ones because of the additional end-end interaction among the thiol groups faced up to the air, albeit both SAMs were tilted by 28°from the surface normal.

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1,6-Hexanedithiol Monolayers on Au(111): A Multitechnique Structural Study

Cited by 116 publications

References 25 publications

Alkylthiol self-assembled monolayers on Au(111) with tailored tail groups for attaching gold nanoparticles

Alkylthiol self-assembled monolayers on Au(111) with tailored tail groups for attaching gold nanoparticles

Molecular Self‐Assembled Monolayers and Multilayers for Organic and Unconventional Inorganic Thin‐Film Transistor Applications

1,6-Hexanedithiol Self-Assembled Monolayers on Au(111) Investigated by Electrochemical, Spectroscopic, and Molecular Mechanics Methods

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