Molecular assemblies on surfaces: towards physical and electronic decoupling of organic molecules

[...]of the (strong) interaction, the molecular scaffolds can also become distorted, electronic states may be significantly broadened and shifted, and vibronic states may even be quenched. Physical decoupling strategies involving the design or manipulation of the molecular building block significant...

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Bibliographic Details
Published in:Beilstein journal of nanotechnology 2021-08, Vol.12 (1), p.950-956
Main Authors: Maier, Sabine, Stöhr, Meike
Format: Article
Language:English
Subjects:
Adsorption
Decoupling
decoupling layer
Electroluminescence
Electron states
Hybridization
Insulating layers
Metal oxides
Metals
Microscopy
Molecular machines
molecular self-assembly
Molecular structure
Nanoscience
Nanotechnology
Organic chemistry
scanning probe microscopy
Semiconductors
Substrates
surface science
Switches
Switching
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Summary:[...]of the (strong) interaction, the molecular scaffolds can also become distorted, electronic states may be significantly broadened and shifted, and vibronic states may even be quenched. Physical decoupling strategies involving the design or manipulation of the molecular building block significantly limit the selection of building blocks and often hinder probing molecular properties with intramolecular resolution. [...]modifications of the substrate, for instance by adding or intercalating a decoupling layer, are often the better choice. [...]ultrathin insulating layers are often not sufficient to truly electronically insulate molecular structures. Additionally, electroluminescence was reported for suspended molecular wires between a metallic surface and the tip of a scanning tunneling microscope [14]. [...]the decoupling brings considerable benefits for surface-supported molecular switches, in particular for preserving reversible switching capabilities [68–69], but also conformational [9–1070], tautomeric [71], and charge state switching could be shown [56].
ISSN:2190-4286
2190-4286
DOI:10.3762/bjnano.12.71