Molecular Self-Assembly Driven by On-Surface Reduction: Anthracene and Tetracene on Au(111)
Krueger J, Eisenhut F, Lehmann T, Alonso JM, Meyer J, Skidin D, Ohmann R, Ryndyk DA, Perez D, Guitian E, Pena D, Moresco F, Cuniberti G (2017)
Publication Type: Journal article
Publication year: 2017
Journal
Book Volume: 121
Pages Range: 20353-20358
Journal Issue: 37
Abstract
Epoxyacenes adsorbed on metal surfaces form acenes during thermally induced reduction in ultrahigh vacuum conditions. The incorporation of oxygen bridges into a hydrocarbon backbone leads to an enhanced stability of these molecular precursors under ambient condition; however, it has also a distinct influence on their adsorption and self-Assembly on metal surfaces. Here, a low-Temperature scanning tunneling microscopy (LT-STM) study of two different epoxyacenes on the Au(111) surface at submonolayer coverage is presented. Both molecules show self-Assembly based on hydrogen bonding. While for the molecules with a single epoxy moiety nanostructures of three molecules are formed, extended molecular networks are achieved with two epoxy moieties and a slightly higher surface coverage. Upon annealing at 390 K, the molecules are reduced to the respective acene; however, both systems keep a similar assembled structure. The experimental STM images supported by theoretical calculations show that the self-Assembly of the on-surface fabricated acenes is greatly influenced by the on-surface reaction and strongly differs from the adsorption pattern of directly deposited acenes, highlighting the importance of the cleaved oxygen in the self-Assembly.
Involved external institutions
Technische Universität Dresden
Germany (DE)
University of Santiago de Compostela / Universidad de Santiago de Compostela (USC)
Spain (ES)
Germany (DE)
University of Santiago de Compostela / Universidad de Santiago de Compostela (USC)
Spain (ES)
How to cite
APA:
Krueger, J., Eisenhut, F., Lehmann, T., Alonso, J.M., Meyer, J., Skidin, D.,... Cuniberti, G. (2017). Molecular Self-Assembly Driven by On-Surface Reduction: Anthracene and Tetracene on Au(111). Journal of Physical Chemistry C, 121(37), 20353-20358. https://doi.org/10.1021/acs.jpcc.7b06131
MLA:
Krueger, Justus, et al. "Molecular Self-Assembly Driven by On-Surface Reduction: Anthracene and Tetracene on Au(111)." Journal of Physical Chemistry C 121.37 (2017): 20353-20358.
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