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Article: Promotion and suppression of single-molecule conductance by quantum interference in macrocyclic circuits

TitlePromotion and suppression of single-molecule conductance by quantum interference in macrocyclic circuits
Authors
Keywordscyclophanes
intramolecular circuits
LUMO-dominated transport
MAP3: Understanding
molecular electronics
quantum interference
single-supermolecule electronics
STM-BJs
Issue Date2021
Citation
Matter, 2021, v. 4, n. 11, p. 3662-3676 How to Cite?
AbstractSingle-molecule electronics is a sub-field of nanoelectronics in which individual devices are formed from single molecules placed between source and drain electrodes. During the past few years, scientists have demonstrated that the flow of electricity through these devices is controlled by quantum interference (QI) between electrons passing from source to drain. Their future development, however, is hampered by difficulties in controlling interference effects. Herein, we demonstrate that electron transport in tetracationic cyclophane circuits is mediated by QI between channels formed from two lowest unoccupied molecular orbitals (LUMOs), while their highest occupied molecular orbitals (HOMOs) play no significant role. Energy differences between these two LUMO channels induce constructive interference, leading to high conductance. By contrast, phase differences between these LUMO channels result in destructive interference and a suppression in overall conductance. Such a design of single-molecule circuits enables the construction of single-molecule conductors and insulators based on a single cyclophane platform.
Persistent Identifierhttp://hdl.handle.net/10722/327736
ISSN
2023 Impact Factor: 17.3
2023 SCImago Journal Rankings: 5.048
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChen, Hongliang-
dc.contributor.authorHou, Songjun-
dc.contributor.authorWu, Qingqing-
dc.contributor.authorJiang, Feng-
dc.contributor.authorZhou, Ping-
dc.contributor.authorZhang, Long-
dc.contributor.authorJiao, Yang-
dc.contributor.authorSong, Bo-
dc.contributor.authorGuo, Qing Hui-
dc.contributor.authorChen, Xiao Yang-
dc.contributor.authorHong, Wenjing-
dc.contributor.authorLambert, Colin J.-
dc.contributor.authorStoddart, J. Fraser-
dc.date.accessioned2023-04-24T05:09:37Z-
dc.date.available2023-04-24T05:09:37Z-
dc.date.issued2021-
dc.identifier.citationMatter, 2021, v. 4, n. 11, p. 3662-3676-
dc.identifier.issn2590-2393-
dc.identifier.urihttp://hdl.handle.net/10722/327736-
dc.description.abstractSingle-molecule electronics is a sub-field of nanoelectronics in which individual devices are formed from single molecules placed between source and drain electrodes. During the past few years, scientists have demonstrated that the flow of electricity through these devices is controlled by quantum interference (QI) between electrons passing from source to drain. Their future development, however, is hampered by difficulties in controlling interference effects. Herein, we demonstrate that electron transport in tetracationic cyclophane circuits is mediated by QI between channels formed from two lowest unoccupied molecular orbitals (LUMOs), while their highest occupied molecular orbitals (HOMOs) play no significant role. Energy differences between these two LUMO channels induce constructive interference, leading to high conductance. By contrast, phase differences between these LUMO channels result in destructive interference and a suppression in overall conductance. Such a design of single-molecule circuits enables the construction of single-molecule conductors and insulators based on a single cyclophane platform.-
dc.languageeng-
dc.relation.ispartofMatter-
dc.subjectcyclophanes-
dc.subjectintramolecular circuits-
dc.subjectLUMO-dominated transport-
dc.subjectMAP3: Understanding-
dc.subjectmolecular electronics-
dc.subjectquantum interference-
dc.subjectsingle-supermolecule electronics-
dc.subjectSTM-BJs-
dc.titlePromotion and suppression of single-molecule conductance by quantum interference in macrocyclic circuits-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.matt.2021.08.016-
dc.identifier.scopuseid_2-s2.0-85123009915-
dc.identifier.volume4-
dc.identifier.issue11-
dc.identifier.spage3662-
dc.identifier.epage3676-
dc.identifier.eissn2590-2385-
dc.identifier.isiWOS:000717526500001-

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