Chirality-Specific Unidirectional Rotation of Molecular Motors on Cu(111)

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dc.citation.firstpage3958en_US
dc.citation.issueNumber4en_US
dc.citation.journalTitleACS Nanoen_US
dc.citation.lastpage3965en_US
dc.citation.volumeNumber17en_US
dc.contributor.authorSchied, Monikaen_US
dc.contributor.authorPrezzi, Deborahen_US
dc.contributor.authorLiu, Dongdongen_US
dc.contributor.authorKowarik, Stefanen_US
dc.contributor.authorJacobson, Peter A.en_US
dc.contributor.authorCorni, Stefanoen_US
dc.contributor.authorTour, James M.en_US
dc.contributor.authorGrill, Leonharden_US
dc.contributor.orgSmalley Institute for Nanoscale Science and Technologyen_US
dc.contributor.orgWelch Institute for Advanced Materialsen_US
dc.contributor.orgNanoCarbon Laboratoryen_US
dc.date.accessioned2023-03-10T19:04:11Zen_US
dc.date.available2023-03-10T19:04:11Zen_US
dc.date.issued2023en_US
dc.description.abstractMolecular motors have chemical properties that enable unidirectional motion, thus breaking microscopic reversibility. They are well studied in solution, but much less is known regarding their behavior on solid surfaces. Here, single motor molecules adsorbed on a Cu(111) surface are excited by voltages pulses from an STM tip, which leads to their rotation around a fixed pivot point. Comparison with calculations shows that this axis results from a chemical bond of a sulfur atom in the chemical structure and a metal atom of the surface. While statistics show approximately equal rotations in both directions, clockwise and anticlockwise, a detailed study reveals that these motions are enantiomer-specific. Hence, the rotation direction of each individual molecule depends on its chirality, which can be determined from STM images. At first glance, these dynamics could be assigned to the activation of the motor molecule, but our results show that this is unlikely as the molecule remains in the same conformation after rotation. Additionally, a control molecule, although it lacks unidirectional rotation in solution, also shows unidirectional rotation for each enantiomer. Hence, it seems that the unidirectional rotation is not specifically related to the motor property of the molecule. The calculated energy barriers for motion show that the propeller-like motor activity requires higher energy than the simple rotation of the molecule as a rigid object, which is therefore preferred.en_US
dc.identifier.citationSchied, Monika, Prezzi, Deborah, Liu, Dongdong, et al.. "Chirality-Specific Unidirectional Rotation of Molecular Motors on Cu(111)." <i>ACS Nano,</i> 17, no. 4 (2023) American Chemical Society: 3958-3965. https://doi.org/10.1021/acsnano.2c12720.en_US
dc.identifier.digitalacsnano-2c12720en_US
dc.identifier.doihttps://doi.org/10.1021/acsnano.2c12720en_US
dc.identifier.urihttps://hdl.handle.net/1911/114498en_US
dc.language.isoengen_US
dc.publisherAmerican Chemical Societyen_US
dc.rightsThis is an open access article under the Creative Commons CC BY 4.0 license.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleChirality-Specific Unidirectional Rotation of Molecular Motors on Cu(111)en_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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