A New Class of Self-Assembled Monolayers:  closo-B12H11S3- on Gold

Yeager, Laura; Saeki, Fusayo; Shelly, Kenneth; Hawthorne, and M. Frederick; Garrell, Robin L.

doi:10.1021/ja9809253

Cited by 29 publications

(20 citation statements)

References 21 publications

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“…[1][2][3][4][5][6] Self-assembly on Au is effective for several key reasons: the ease with which the Au{111} surface may be prepared, the instability of the gold oxide, the ability of thiols to displace contaminants during the formation of the SAM, post-adsorption molecular mobility and exchange that enable high levels of molecular-scale order, and the availability of a myriad of thiol-based adsorbates. [6][7][8][9][10][11][12][13][14][15][16][17][18] Self-assembly is also becoming increasingly relevant for soft-and hybrid-lithographic patterning on surfaces. [19][20][21][22][23][24][25][26][27][28][29][30] Substrates including noble metals, [31][32][33][34][35][36][37] semiconductors, 38-61 insulators, base metals, and alloys [62][63][64][65][66][67] have all been employed as substrates for SAMs.…”

Section: Introductionmentioning

confidence: 99%

Simple, robust molecular self-assembly on germanium

et al. 2011

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We report the facile fabrication of high-quality, robust alkanethiolate self-assembled monolayers (SAMs) on germanium substrates. Our approach to produce SAMs on technologically important substrates takes advantage of the many strategies previously developed for gold-thiol self-assembly. Direct self-assembly of alkanethiols on germanium is impeded by the presence of the native germanium oxide. Using a mixture of water and ethanol, we create an environment where both adsorbate and oxide are sufficiently soluble to enable SAM deposition in a single step. By manipulating reaction conditions, monolayers form spontaneously on untreated germanium, which opens new avenues for the exploitation of self-assembly on semiconductor surfaces. While our analyses initially focused on 1-dodecanethiol on Ge(100), this method is robust and we have extended its use to include a range of adsorbates on Ge(100) as well as to the Ge(111) and Ge(110) substrates.

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Section: Introductionmentioning

confidence: 99%

Simple, robust molecular self-assembly on germanium

et al. 2011

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“…One unique class of chalcogen-containing ligands that have not yet been widely explored in the context of MOCHAs are functionalized boron clusters. This is surprising, considering that boron cluster ligands (thiolates, carboxylic acids) have been extensively studied on bulk surfaces for the past two decades, [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52] and more recently with metal chalcogenide nanoparticles [53][54] as well as metallic super atoms. [55][56][57] The attractiveness of boron clusters in these applications is due in large part to their propensity to form "defect-free" monolayers as a function of both the steric bulk provided by the boron cluster and, in the case of neutral boron clusters (i.e.…”

Section: Introductionmentioning

confidence: 99%

Sterically Invariant Carborane-Based Ligands for the Morphological and Electronic Control of Metal-Organic Chalcogenolate Assemblies

Mills

Jones

Anderson

et al. 2022

Preprint

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Herein, we report the use of sterically invariant carborane-based chalcogenols, containing exopolyhedral B-Se or B-S bonds, as ligands for the formation of photoluminescent copper(I)-based metal-organic chalcogenolate assemblies (MOCHAs). We show that precise tuning of the carborane dipole by changing the carborane isomer from meta- to ortho- allows for control over the MOCHA morphology and regulation of the resulting photophysical properties. Furthermore, microcrystal electron diffraction (MicroED) has been demonstrated as a powerful tool for metal chalcogenide structure elucidation. Through the use of MicroED, one of the isolated materials is determined to consist of zero-dimensional Cu4(Se-C2B10H11)4 clusters with an unprecedented Cu4Se4 geometry.

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“…The application of thiolated borane clusters in the preparation of SAMs was first reported nearly 15 years ago,4 but further development of this fascinating intersection of inorganic chemistry and surface science has been hindered by the lack of a general method for the synthesis of various B‐mercaptocarboranes. These compounds are of potentially great interest to the surface science community as a result of their uneven electron‐density distribution within the carborane cage and the consequent effects on electron density at the mercapto group.…”

Section: Introductionmentioning

confidence: 99%

B‐Mercaptocarboranes: A New Synthetic Route

et al. 2013

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A novel route for synthesis of B‐mercaptocarboranes is described. The reaction proceeds through Pd‐catalyzed iodine exchange with the sulfur nucleophile TIPS–SH in mono‐ and diiodinated ortho‐, meta‐, and para‐carboranes. Self‐assembled monolayers of selected B‐mercaptocarboranes on a gold surface were analyzed by X‐ray photoelectron spectroscopy and their water contact angles were assessed.

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A New Class of Self-Assembled Monolayers: closo-B₁₂H₁₁S³^- on Gold

Cited by 29 publications

References 21 publications

Simple, robust molecular self-assembly on germanium

Simple, robust molecular self-assembly on germanium

Sterically Invariant Carborane-Based Ligands for the Morphological and Electronic Control of Metal-Organic Chalcogenolate Assemblies

B‐Mercaptocarboranes: A New Synthetic Route

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