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Título: | Large area arrays of discrete single-molecule junctions derived from host-guest complexes |
Autor: | Escorihuela, Enrique CSIC ORCID; Barrio, Jesús del CSIC ORCID; Davidson, Ross J.; Beeby, Andrew; Low, Paul J.; Perez Murano, Francesc X. CSIC ORCID ; Cea, Pilar CSIC ORCID; Martín, Santiago CSIC ORCID | Fecha de publicación: | 2023 | Editor: | Royal Society of Chemistry (UK) | Citación: | Nanoscale 16(3): 1238-1246 (2023) | Resumen: | The desire to continually reduce the lower limits of semiconductor integrated circuit (IC) fabrication methods continues to inspire interest in unimolecular electronics as a platform technology for the realization of future (opto)electronic devices. However, despite successes in developing methods for the construction and measurement of single-molecule and large-area molecular junctions, exercising control over the precise junction geometry remains a significant challenge. Here, host–guest complexes of the wire-like viologen derivative 1,1′-bis(4-(methylthio)-phenyl)-[4,4′-bipyridine]-1,1′-diium chloride ([1][Cl]2) and cucurbit[7]uril (CB[7]) have been self-assembled in a regular pattern over a gold substrate. Subsequently, ligandless gold nanoparticles (AuNPs) synthesized in situ are deposited over the host–guest array. The agreement between the conductance of individual mono-molecular junctions, appropriately chosen as a function of the AuNP diameter, within this array determined by conductive probe atomic force microscope (c-AFM) and true single-molecule measurements for a closely similar host–guest complex within a scanning tunneling microscope break-junction (STM-BJ) indicates the formation of molecular junctions derived from these host–guest complexes without deleterious intermolecular coupling effects. | Versión del editor: | https://doi.org/10.1039/D3NR05122F | URI: | http://hdl.handle.net/10261/353853 | DOI: | 10.1039/D3NR05122F | E-ISSN: | 2040-3372 |
Aparece en las colecciones: | (INMA) Artículos (IMB-CNM) Artículos |
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