journal article·2016-12-01Open access

Surface Structure and Electron Transfer Dynamics of the Self-Assembly of Cyanide on Au{111}

Andrew I. Guttentag, Tobias Wächter, Kristopher K. Barr, John M. Abendroth, Tze-Bin Song, Nichole F. Sullivan, Yang Yang, David L. Allara, Michael Zharnikov, Paul S. Weiss

The Journal of Physical Chemistry C· Volume 120· Issue 47

Abstract

A vibronic resonance between Au{111} surface states and adsorbed CN vibrations has been predicted, which we target for study. We have formed stable monolayers of cyanide on Au{111} and observe a hexagonal close-packed lattice with a nearest neighbor distance of 3.8 ± 0.5 Å. Cyanide orients normal to the surface attached via a Au–C bond. We show that the substrate–molecule coupling is particularly strong, leading to ultrafast electron transfer from the cyanide molecules to the Au{111} substrate as measured by resonant Auger spectroscopy using the core–hole clock method. The CN/Au{111} system is a simple example of a strongly interacting adsorbate–substrate system and will be the subject of a number of further studies, as discussed.
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Research context

OpenAlex topics: Molecular Junctions and Nanostructures · Surface Chemistry and Catalysis · Surface and Thin Film Phenomena

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, United States

Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States

Applied Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany

Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States

Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802, United States

Funding

Basic Energy Sciences

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