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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Buck, Manfred
University of St Andrews
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2022Coordination-controlled electrodeposition of palladium/copper thin films onto a pyridine-terminated self-assembled monolayer
- 2021Porous Honeycomb Self-Assembled Monolayerscitations
- 2021Porous honeycomb self-assembled monolayers:tripodal adsorption and hidden chirality of carboxylate anchored triptycenes on Agcitations
- 2021Porous honeycomb self-assembled monolayers : tripodal adsorption and hidden chirality of carboxylate anchored triptycenes on Agcitations
- 2020Coordination controlled electrodeposition and patterning of layers of palladium/copper nanoparticles on top of a self-assembled monolayercitations
- 2019Coordination controlled electrodeposition and patterning of layers of palladium/copper nanoparticles on top of a self-assembled monolayercitations
- 2012Redox mediation enabled by immobilised centres in the pores of a metal-organic framework grown by liquid phase epitaxycitations
- 2011Electrodeposition of Palladium onto a Pyridine-Terminated Self-Assembled Monolayercitations
- 2010Organic Mono layers, Networks, Electrochemistry: A Toolbox for the Nanoscale
- 2009Self-Assembly of a Pyridine-Terminated Thiol Monolayer on Au(111)citations
- 2008On the role of extrinsic and intrinsic defects in the underpotential deposition of Cu on thiol-modified Au(111) electrodescitations
- 2007Influence of molecular structure on phase transitions: A study of self-assembled monolayers of 2-(aryl)-ethane thiolscitations
- 2005Replicative generation of metal microstructures by template-directed electrometallizationcitations
- 2003Pronounced Odd-Even Changes in the Molecular Arrangement and Packing Density of Biphenyl-Based Thiol SAMs: A Combined STM and LEED Studycitations
- 2002Optical properties of a light-emitting polymer directly patterned by soft lithographycitations
- 2000Solvation of oligo(ethylene glycol)-terminated self-assembled monolayers studied by vibrational sum frequency spectroscopycitations
Places of action
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article
On the role of extrinsic and intrinsic defects in the underpotential deposition of Cu on thiol-modified Au(111) electrodes
Abstract
Underpotential deposition (UPD) of Cu on Au(111) electrodes modified by self-assembled monolayers (SAMs) of omega-(4'-methylbiphenyl-4-yl)ethanethiol (BP2) was studied in situ by electrochemical scanning tunneling microscopy. The UPD layer intercalated between SAM and Au consists of monatomic high nanoislands on top of an extended Cu film. Nucleation and growth of the Cu UPD layer are accounted for by a mechanism that is fundamentally different from the one suggested in the literature for alkanethiols. Domain boundaries, vacancy islands, or step edges do not act as nucleation sites. The electrode passivation is therefore not limited by the intrinsic structure of the SAM but by extrinsic defects, which are associated with more substantial discontinuities in the SAM. These act not only as nucleation centers for the Cu UPD but throughout the whole growth process are the only sites through which Cu penetrates. The growth proceeds by diffusion of Cu at the SAM-substrate interface until completion of the UPD layer. The implications of our observations for the generation of metal-SAM-metal structures are discussed.