Asaad, Maryana;
Vezzoli, Andrea;
Daaoub, Abdalghani;
Borowiec, Joanna;
Pyurbeeva, Eugenia;
Sadeghi, Hatef;
Sangtarash, Sara;
... Mol, Jan A; + view all
(2023)
Ordered arrays of gold nanoparticles crosslinked by dithioacetate linkers for molecular devices.
Journal of Materials Chemistry C
, 11
(16)
pp. 5431-5437.
10.1039/d3tc00145h.
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Abstract
The final performance of a molecular electronic device is determined by the chemical structure of the molecular wires used in its assembly. Molecular place-exchange was used to incorporate di-thioacetate terminated molecules into ordered arrays of dodecanethiol capped gold nanoparticles. X-Ray photoelectron spectroscopy confirmed successful molecular replacement. Room-temperature molecular conductance of a statistically large number of devices reveals that conductance is enhanced by up to two orders of magnitude for the di-thioacetate terminated molecules. Density functional theory transport calculations were performed on five different configurations of the di-thioacetate molecules between gold electrodes, and the calculated average conductance values are in good agreement with the experimentally-observed conductance trend. Our findings highlight important cooperative effects of bridging neighboring gold nanoparticles and choice of appropriate molecular wires when designing devices for efficient transport.
| Type: | Article |
|---|---|
| Title: | Ordered arrays of gold nanoparticles crosslinked by dithioacetate linkers for molecular devices |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1039/d3tc00145h |
| Publisher version: | https://doi.org/10.1039/d3tc00145h |
| Language: | English |
| Additional information: | This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. |
| Keywords: | Science & Technology, Technology, Physical Sciences, Materials Science, Multidisciplinary, Physics, Applied, Materials Science, Physics, NANOCRYSTALS, CONDUCTANCE, SPECTROSCOPY, NETWORKS, STATE, 2D |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10170571 |
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