Adsorbed thiophenol and related compounds studied at platinum(111) electrodes by EELS, Auger spectroscopy, and cyclic voltammetry

Stern, Donald A.; Wellner, E.; Salaita, Ghaleb N.; Laguren‐Davidson, Laarni; Lu, Frank K.; Batina, Nikola; Frank, Douglas G.; Zapien, Donald C.; Walton, Nicholas J.; Hubbard, Arthur T.

doi:10.1021/ja00223a003

Cited by 103 publications

(87 citation statements)

References 7 publications

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“…While Au (111) is clearly the most commonly used substrate for SAMs, also various crystal faces of silver, [207][208][209][210] copper, [211][212][213][214] palladium, [215][216][217] and platinum [207,[218][219][220] have been experimentally investigated. Also (liquid) mercury has been used.…”

Section: Impact Of the Substrate Metalmentioning

confidence: 99%

Modeling the Electronic Properties of π‐Conjugated Self‐Assembled Monolayers

2010

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The modification of electrode surfaces by depositing self-assembled monolayers (SAMs) provides the possibility for controlled adjustment of various key parameters in organic and molecular electronic devices. Most important among them are the work function of the electrode and the relative alignment of its Fermi level with the conducting states in the SAM itself and with those in a subsequently deposited organic semiconductor. For the efficient application of such interface modifications it is crucial to reach a proper understanding of the relation between the chemical structure of a molecule, its molecular electronic characteristics, and the properties of the SAM formed by such molecules. Over the past years, quantum-mechanical calculations have proven to be a valuable tool for reaching a fundamental understanding of the relevant structure-property relations. Here, we provide a review over the field and report on recent progress in the modeling of the interfacial electronic properties of pi-conjugated SAMs. In addition to the insight that can be gained from simple electrostatic considerations, we focus on the quantum-mechanical description of the roles played by substituents, molecular backbones, chemical anchoring groups, and the packing density of molecules on the surface. Furthermore, we explicitly address the energy-level alignment at the interface between a prototypical organic semiconductor and a SAM-covered metal electrode and describe an approach suitable for extending the metallic character of the substrate onto the monolayer.

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Section: Impact Of the Substrate Metalmentioning

confidence: 99%

Modeling the Electronic Properties of π‐Conjugated Self‐Assembled Monolayers

2010

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“…This makes them have potential applications in corrosion prevention, electro-optic devices, molecular recognition, etc. (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16).…”

Section: Introductionmentioning

confidence: 99%

Study on Self-Assembled Monolayers of Functionalized Azobenzene Thiols on Gold: XPS, Electrochemical Properties, and Surface-Enhanced Raman Spectroscopy

Zhang

Ren

et al. 2002

Journal of Colloid and Interface Science

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“…Thus, it is important to investigate the corrosion resistance and the structure of thiol self-assembly super thin layers for developing a new design concept for thinner chromate-free coatings with high corrosion resistance. Numerous studies have examined the layer structure of thiols by analyzing spectra obtained by highly sensitive reflection infrared spectroscopy, [13][14][15][16] electron beam diffraction, 15,16) Auger electron spectroscopy 17) and electron energy loss spectroscopy (EELS). 17) For example, it is reported that long-chain alkanethiols form monomolecular layers and that the alkane chains tilt at an angle of 20-30°to the vertical direction of gold substrates.…”

Section: ←R-s-mϩnh ϩmentioning

confidence: 99%

“…Numerous studies have examined the layer structure of thiols by analyzing spectra obtained by highly sensitive reflection infrared spectroscopy, [13][14][15][16] electron beam diffraction, 15,16) Auger electron spectroscopy 17) and electron energy loss spectroscopy (EELS). 17) For example, it is reported that long-chain alkanethiols form monomolecular layers and that the alkane chains tilt at an angle of 20-30°to the vertical direction of gold substrates. 13,14) On the other hand, Mori et al 10) used the spectroscopic approach to explain the structure and formation process of triazinethiol layers formed on copper and reported that these thiols were adsorbed on the metal surface to form monomolecular layers while retaining their triazine ring structure, and that layer growth and lamination occurred.…”

Section: ←R-s-mϩnh ϩmentioning

confidence: 99%