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Verfasst von:Ortiz de la Morena, Rodrigo [VerfasserIn]   i
 Asyuda, Andika [VerfasserIn]   i
 Lu, Hao [VerfasserIn]   i
 Zharnikov, Michael [VerfasserIn]   i
Titel:Shape controlled assembly of carboxylic acids
Titelzusatz:formation of a binary monolayer by intercalation into molecular nanotunnels
Verf.angabe:Rodrigo Ortiz de la Morena, Andika Asyuda, Hao Lu, Hannah Aitchison, Kelly Turner, Stephen M. Francis, Michael Zharnikov and Manfred Buck
E-Jahr:2020
Jahr:11 February 2020
Umfang:11 S.
Fussnoten:Gesehen am 08.04.2020
Titel Quelle:Enthalten in: Physical chemistry, chemical physics
Ort Quelle:Cambridge : RSC Publ., 1999
Jahr Quelle:2020
Band/Heft Quelle:22(2020), 7, Seite 4205-4215
ISSN Quelle:1463-9084
Abstract:Binary self-assembled monolayers (SAMs) combining a Y-shaped aromatic carboxylic acid (1,3,5-benzenetribenzoic acid, H3BTB) and a cage-type alicyclic carboxylic acid (adamantane carboxylic acid, AdCA) were investigated by scanning tunneling microscopy (STM), X-ray photoelectron spectroscopy (XPS), and near edge X-ray absorption fine structure (NEXAFS) spectroscopy. The SAMs, prepared by molecular adsorption from solution on Au substrates modified by underpotential deposition of Ag, exhibit a pronounced dependence of their structure on the assembly protocol. Exposing an H3BTB SAM to AdCA, the highly regular row structure of the native H3BTB layer persists and STM imaging does not show signs of AdCA adsorption. This is in striking contrast to the disordered arrangements of H3BTB and the presence of AdCA employing the inverted adsorption sequence or coadsorption of the two molecules. However, spectroscopic analysis of the H3BTB SAM exposed to AdCA reveals the presence also of the latter, suggesting that the AdCA molecules are hidden in the nanotunnels of the H3BTB monolayer. Direct evidence for the intercalation of AdCA is obtained by STM manipulation experiments which lay bare areas of AdCA molecules upon local removal of H3BTB. Surprisingly, these are densely packed and arranged into a highly ordered monolayer. Formation of such a compact AdCA layer is explained by expulsion of AdCA from the H3BTB nanotunnels of the surrounding intact mixed SAM, driven by release of stress in the nanotunnels built up when AdCA is intercalated.
DOI:doi:10.1039/C9CP06724H
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext ; Verlag: https://doi.org/10.1039/C9CP06724H
 Volltext ; Verlag ; Resolving-System: https://pubs.rsc.org/en/content/articlelanding/2020/cp/c9cp06724h
 Volltext: https://doi.org/10.1039/C9CP06724H
 DOI: https://doi.org/10.1039/C9CP06724H
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1694265838
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