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

Abstract

/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.

Effect of an Oxidized Gold Substrate on Alkanethiol Self-Assembly

“…These structures have been observed to extend laterally for a length of 60−70 alkanethiols . Similar structures have been formed at the interface of an organic phase, containing thiol, and an aqueous phase, containing silver or copper ions . Such structures would be consistent with our observations.…”

“…These data are not consistent with the model of alkanethiol monolayers covering mounds of gold oxide on the gold surface as proposed by Ron et al Our data instead indicate that the islands are an insoluable complex primarily composed of a bilayer of the corresponding thiol. Our data are consistent with the complex being the gold−thiolate analogue to silver−thiolate and copper−thiolate complexes previously observed by others. ,, …”

Facile Synthesis and Assembly of Cu2S Nanodisks to Corncoblike Nanostructures

“…Figure a shows the TEM image of the copper dithiolate precursor. The filmlike morphology indicates that the precursor has a layered structure, which is similar to the layered structure of the copper thiolate polymers . In Figure b−d, TEM images of Cu 2 S nanocrystals synthesized at 185 °C reveal the shape evolution from small spherical particles into flat disks with increased reaction time.…”

Activated Carbon Modified with Copper for Adsorption of Propanethiol

“…These SAMs have been intensively studied and are of great interest due to the unique properties of the resulting surfaces, including stabilization and passivation to electrochemistry and other reactions. While much of the study of copper/thiol chemistry has been restricted to the formation and properties of SAMs, it has been shown that multilayers can form into independent lamellar structures ( Figure 1 ) [ 10 – 21 ]. It was discovered in this study that under the right conditions, these types of layered compounds can be formed in a sulphur guard bed at elevated temperature and pressure, and in the presence of a hydrocarbon solvent.…”