Layered structure of crystalline compounds silver thiolates (AgSR)

Dance, Ian G.; Fisher, Karen R.; Banda, Raju; Scudder, Marcia L.

doi:10.1021/ic00002a008

Cited by 184 publications

(259 citation statements)

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“…By placing sulfur atoms in the digonal (twofold bridging) sites shown, they template a close-packed arrangement of the attached alkyl chains (which are not shown in this view). This is the main feature that separates this model from previous models (4,6). A close examination of Fig.…”

Section: The Structurementioning

confidence: 58%

“…Previous studies of silver layered materials were not able to determine the in-plane structure from XRD measurements (4,6). A new proposal for the in-plane structure is shown in Fig.…”

Section: The Structurementioning

confidence: 96%

“…Less well known than SAMs are layered materials composed of metal-alkanethiolate units (4)(5)(6). These are also materials that self-assemble in solution, forming a multibilayer structure that is illustrated in Fig.…”

Section: Alkanethiols (Hs(chmentioning

confidence: 99%

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The self-assembly of a layered material: metal-alkanethiolate bilayers

Bensebaa¹,

Ellis²,

Kruus³

et al. 1998

Rev. Can. Chim.

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/npsi/ctrl?action=rtdoc&an=8894811&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=8894811&lang=frAccess and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1139/cjc-76-11-1654Canadian Journal of Chemistry, 76, 11, pp. 1654Chemistry, 76, 11, pp. -1659Chemistry, 76, 11, pp. , 1998 The self-assembly of a layered material: metal-alkanethiolate bilayers Bensebaa, Farid; Ellis, T. H.; Kruus, E.; Voicu, R.; Zhou, Y.The self-assembly of a layered material: metal-alkanethiolate bilayers F. Bensebaa, T.H. Ellis, E. Kruus, R. Voicu, and Y. Zhou Abstract: Layered materials composed of metal-alkanethiolate units have been synthesized and characterized. The selfassembly occurs at the interface between a metal-ion-containing aqueous phase and an alkanethiol-containing organic phase. Key features of the structure have been determined from X-ray diffraction and infrared spectroscopy measurements. The highly ordered bilayers are characterized by tilted, all-trans alkyl chains. A new model for the inplane structure has been presented, which is based on a hexagonal arrangement of metal atoms in the central plane.Key words: self-assembly, alkanethiolates, layered materials, vibrational spectroscopy.Résumé : On a synthétisé et caractérisé des matériaux en couches formés d'unités alcanethiolate de métal. L'autoassemblage se produit à l'interface entre une phase aqueuse contenant l'ion métallique et une phase organique contenant l'alcanethiol. On a déterminé les caractéristiques principales de la structure par diffraction des rayons X et par spectroscopie infrarouge. Les bicouches bien ordonnées sont caractérisées par des chaînes alkyles inclinées, complètement trans. On propose un nouveau modèle pour la structure dans le plan; elle est basée sur un arrangement hexagonal des atomes métalliques dans le plan central.Mots clés : autoassemblage, matériaux en couche, spectroscopie de vibration.

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Section: The Structurementioning

confidence: 58%

“…Previous studies of silver layered materials were not able to determine the in-plane structure from XRD measurements (4,6). A new proposal for the in-plane structure is shown in Fig.…”

Section: The Structurementioning

confidence: 96%

See 1 more Smart Citation

The self-assembly of a layered material: metal-alkanethiolate bilayers

Bensebaa¹,

Ellis²,

Kruus³

et al. 1998

Rev. Can. Chim.

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“…This is the first example of protective units in a Ag cluster orienting this way rather than being decorated with either three-dimensional Ag 2 S 5 protective units 11,12 or twodimensional Ag-S sheets as in silver-thiolate complexes 30 . Potentially, the shape of protective groups could be tuned to elicit desired properties in clusters.…”

Section: Supporting Information Placeholdermentioning

confidence: 89%

[Ag₂₅(SR)₁₈]⁻: The “Golden” Silver Nanoparticle

et al. 2015

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Silver nanoparticles with an atomically precise molecular formula [Ag 25 (SR) 18 ] − (−SR: thiolate) are synthesized, and their single-crystal structure is determined. This synthesized nanocluster is the only silver nanoparticle that has a virtually identical analogue in gold, i.e., [Au 25 (SR) 18 ] − , in terms of number of metal atoms, ligand count, superatom electronic configuration, and atomic arrangement. Furthermore, both [Ag 25 (SR) 18 ] − and its gold analogue share a number of features in their optical absorption spectra. This unprecedented molecular analogue in silver to mimic gold offers the first model nanoparticle platform to investigate the centuries-old problem of understanding the fundamental differences between silver and gold in terms of nobility, catalytic activity, and optical property.S ilver and gold have contrasting physical and chemical properties despite their similarity in atomic size, structure, and bulk-lattice. Throughout the ages, humankind was captivated by the properties of these lustrous metals. However, only in the last century or so have scientists been able to investigate the underlying fundamental differences between silver and gold and their origin down to the nanoscale. This pursuit was made possible through advancements in nanofabrication techniques, which enabled the synthesis of metal nanostructures and their confinement in organic shells. 1,2 These advancements accentuated the differences in chemical properties between gold and silver. For example, gold nanoparticles were found to be effective catalysts for several reactions such as carbon monoxide oxidation 3 and aldehydes reduction, 4 and their noble behavior makes them relatively biocompatible 5,6 and thus useful for biomedicine. 6,7 On the other hand, silver nanoparticles were found to exhibit much lower catalytic utility and are quite cytotoxic; hence, they are used often in antibacterial surface coatings. 1,8 The discovery of nanoclusters, which are atomically precise nanoparticles, has brought forth a nanoparticle system, whose properties are well-defined, modeled, and explained. 1,2,9−13 In the past 10 years, the nanocluster community has made great strides in the synthesis, isolation, and crystal structure determination of a remarkable number of gold species, 2,9,10 but only a few species of silver.

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“…The metal and sulfur atoms are arranged in a two-dimensional zigzag plane, with the thiol chains lying perpendicularly to both sides of the plane as extensively reported in the previous literature. [3][4][5][6][7][8][9][10][11] The system is stabilized through the socalled metallophilic attractions. 12,13 These M I -M I noncovalent interactions are estimated to be energetically similar to hydrogen bonds in the case of gold(I) (5-10 kcal mol 21 ) and slightly weaker in the case of other metals like silver(I) and copper(I).…”

Section: Introductionmentioning

confidence: 99%

“Metallophilic crosslinking” to provide fast-curing and mendable poly(urethane-metallothiolate) elastomers

Luzuriaga

Rekondo

Martín

et al. 2015

J. Polym. Sci. Part A: Polym. Chem.

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INTRODUCTIONSince their discovery by Otto Bayer in 1937, polyurethanes (PUs) are widely used in many industrial applications. So far, one of the most common strategies for the fabrication of PU networks is the crosslinking of liquid polymer precursors to give a three-dimensional network. Such systems can be monocomponent, which cure by the reaction of isocyanate-terminated polymers with ambient moisture, or bicomponent, where isocyanate groups react with polyols. The wide use of PUs in many different specific applications is boosting the constant search for alternative materials with tailored properties, such as poly(urea-urethanes), polyureas, or polythiourethanes. 1 Here, we describe a novel two-component PU system based on a thiolterminated PU polymer and a silver salt, which permits a very fast-curing process. In addition, the resulting elastomeric material presents good processability at mild conditions.

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Layered structure of crystalline compounds silver thiolates (AgSR)

Cited by 184 publications

References 3 publications

The self-assembly of a layered material: metal-alkanethiolate bilayers

The self-assembly of a layered material: metal-alkanethiolate bilayers

[Ag₂₅(SR)₁₈]⁻: The “Golden” Silver Nanoparticle

“Metallophilic crosslinking” to provide fast-curing and mendable poly(urethane-metallothiolate) elastomers

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Layered structure of crystalline compounds silver thiolates (AgSR)

Cited by 184 publications

References 3 publications

The self-assembly of a layered material: metal-alkanethiolate bilayers

The self-assembly of a layered material: metal-alkanethiolate bilayers

[Ag25(SR)18]−: The “Golden” Silver Nanoparticle

“Metallophilic crosslinking” to provide fast-curing and mendable poly(urethane-metallothiolate) elastomers

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Product

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[Ag₂₅(SR)₁₈]⁻: The “Golden” Silver Nanoparticle