Phase separation of a self-assembled monolayer made from hydrocarbon-fluorocarbon disulfide

Mizutani, Wataru; Ishida, Takao; Yamamoto, S.-I.; Tokumoto, Hiroshi; Hokari, Hirofumi; Azehara, Hiroaki; Fujihira, Masamichi

doi:10.1007/s003390051338

Cited by 20 publications

(12 citation statements)

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“…The structures of alkanethiol or dialkyl disulfide organosulfur self-assembled monolayers (SAMs) on a Au(111) surface have been extensively studied using many analytical tools such as X-ray photoelectron spectroscopy (XPS), − scanning probe microscopy (SPM), − X-ray or helium diffraction techniques, − electrochemical measurements, − and thermal desorption spectroscopy (TDS) 32,33 from a viewpoint of basic surface science. Although many reports have been published in the past decade, as reviewed by Ulman, there still remain many unsolved questions, especially concerning the chemical state of sulfur on the Au surface.…”

Section: Introductionmentioning

confidence: 99%

High-Resolution X-ray Photoelectron Spectra of Organosulfur Monolayers on Au(111): S(2p) Spectral Dependence on Molecular Species

Ishida¹,

Choi²,

Mizutani³

et al. 1999

Langmuir

250

280

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We have used high-resolution X-ray photoelectron spectroscopy (XPS) to investigate the molecular dependence on sulfur chemical states of organosulfur monolayers of alkanethiol, dialkyl disulfide, monosulfide, thiophene, and aromatic thiols on a Au(111) surface. When monosulfides or thiophenes adsorbed on the Au surface, the S(2p) peaks appeared between 161 and 164 eV, and peak fitting revealed that these organosulfurs exhibited almost the same peaks as those of alkanethiol and dialklyl disulfide monolayers. The monolayer made from monosulfide with shorter alkyl chains exhibited almost the same S(2p) XPS spectrum as the typical alkanethiol or dialkyl disulfide monolayers. Another S(2p3/2) peak appeared for aromatic derivatized thiol SAMs at around 161 eV, in addition to strong doublet S(2p) peak observed at 162.0 and 163.3 eV in the S(2p) spectra. The 161 eV peak was observed even in the S(2p) XPS spectra of alkanethiol or dialkyl disulfide monolayers, at the initial stage of monolayer growth or after low-temperature (∼ 100 °C) annealing of low molecular density alkanethiol SAMs. We consider that this 161 eV peak can be formed without molecular decomposition as well as due to the atomic sulfur produced by C-S cleavage.

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Section: Introductionmentioning

confidence: 99%

High-Resolution X-ray Photoelectron Spectra of Organosulfur Monolayers on Au(111): S(2p) Spectral Dependence on Molecular Species

Ishida¹,

Choi²,

Mizutani³

et al. 1999

Langmuir

250

280

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“…We have used the molecular resolution capability of scanning tunneling microscopy (STM) to distinguish between regions of different chemical functionality in self-assembled monolayers (SAMs) of alkanethiols on Au{111}. Surfaces can be produced with mixed ω-functionality at the exposed interface. − Despite the volume of STM work, questions remain as to the imaging mechanism and whether STM can image the exposed (alkanethiolate-air) SAM interface . To answer these questions, we probe the limit for which STM can detect small differences in two-component SAMs.…”

Section: Introductionmentioning

confidence: 99%

Directed Self-Assembly to Create Molecular Terraces with Molecularly Sharp Boundaries in Organic Monolayers

et al. 1999

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We demonstrate the ability to control the placement of molecules within self-assembled films. We show quasi-two-dimensional mosaic structures within two-component self-assembled monolayers. These demonstrate new types of monolayer features: the domains of each component form molecular terraces, and the boundaries between these domains form molecular step edges. We find the molecular step edges are molecularly sharp and laterally epitaxial. The molecular step edges have the unique ability to expose a typically buried part of the larger molecule at the boundary. For the identical components in the crystalline monolayer, we can also distribute the molecules randomly. These structures were selected and created using simple controlled sequences of self-assembly and processing with different length alkanethiols on Au{111}. We have imaged these films using molecular resolution scanning tunneling microscopy.

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“…The analysis is required for characterizing the spatial distribution of molecules on the 1-100-nm scale [281]. Friction force microscopy (FFM) is also useful for the purpose [284][285][286]. Friction force microscopy (FFM) is also useful for the purpose [284][285][286].…”

Section: 2172) Fujihira and Moritamentioning

confidence: 99%

Preparation of Self‐assembled Monolayers (SAMs) onAuandAg

Akiba

Fujihira

2007

Encyclopedia of Electrochemistry

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Phase separation of a self-assembled monolayer made from hydrocarbon-fluorocarbon disulfide

Cited by 20 publications

References 0 publications

High-Resolution X-ray Photoelectron Spectra of Organosulfur Monolayers on Au(111): S(2p) Spectral Dependence on Molecular Species

High-Resolution X-ray Photoelectron Spectra of Organosulfur Monolayers on Au(111): S(2p) Spectral Dependence on Molecular Species

Directed Self-Assembly to Create Molecular Terraces with Molecularly Sharp Boundaries in Organic Monolayers

Preparation of Self‐assembled Monolayers (SAMs) onAuandAg

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