Hydrogen-bonded clusters of 1, 1'-ferrocenedicarboxylic acid on Au(111) are initially formed in solution

Low-temperature scanning tunneling microscopy is used to observe self-assembled structures of ferrocenedicarboxylic acid (Fc(COOH)2) on the Au(111) surface. The surface is prepared by pulse-deposition of Fc(COOH)2 dissolved in methanol, and the solvent is evaporated before imaging. While the rows of...

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Bibliographic Details
Published in:The Journal of chemical physics 2015-03, Vol.142 (10), p.101927-101927
Main Authors: Quardokus, Rebecca C, Wasio, Natalie A, Brown, Ryan D, Christie, John A, Henderson, Kenneth W, Forrest, Ryan P, Lent, Craig S, Corcelli, Steven A, Kandel, S Alex
Format: Article
Language:English
Subjects:
Adsorbates
Clusters
Dimers
Hydrogen bonding
Self-assembly
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Summary:Low-temperature scanning tunneling microscopy is used to observe self-assembled structures of ferrocenedicarboxylic acid (Fc(COOH)2) on the Au(111) surface. The surface is prepared by pulse-deposition of Fc(COOH)2 dissolved in methanol, and the solvent is evaporated before imaging. While the rows of hydrogen-bonded dimers that are common for carboxylic acid species are observed, the majority of adsorbed Fc(COOH)2 is instead found in six-molecule clusters with a well-defined and chiral geometry. The coverage and distribution of these clusters are consistent with a random sequential adsorption model, showing that solution-phase species are determinative of adsorbate distribution for this system under these reaction conditions.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.4909517