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Article: Single-molecule charge transport through positively charged electrostatic anchors

TitleSingle-molecule charge transport through positively charged electrostatic anchors
Authors
Issue Date2021
Citation
Journal of the American Chemical Society, 2021, v. 143, n. 7, p. 2886-2895 How to Cite?
AbstractThe charge transport in single-molecule junctions depends critically on the chemical identity of the anchor groups that are used to connect the molecular wires to the electrodes. In this research, we report a new anchoring strategy, called the electrostatic anchor, formed through the efficient Coulombic interaction between the gold electrodes and the positively charged pyridinium terminal groups. Our results show that these pyridinium groups serve as efficient electrostatic anchors forming robust gold-molecule-gold junctions. We have also observed binary switching in dicationic viologen molecular junctions, demonstrating an electron injection-induced redox switching in single-molecule junctions. We attribute the difference in low- and high-conductance states to a dicationic ground state and a radical cationic metastable state, respectively. Overall, this anchoring strategy and redox-switching mechanism could constitute the basis for a new class of redox-activated single-molecule switches.
Persistent Identifierhttp://hdl.handle.net/10722/327721
ISSN
2023 Impact Factor: 14.4
2023 SCImago Journal Rankings: 5.489
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChen, Hongliang-
dc.contributor.authorBrasiliense, Vitor-
dc.contributor.authorMo, Jingshan-
dc.contributor.authorZhang, Long-
dc.contributor.authorJiao, Yang-
dc.contributor.authorChen, Zhu-
dc.contributor.authorJones, Leighton O.-
dc.contributor.authorHe, Gen-
dc.contributor.authorGuo, Qing Hui-
dc.contributor.authorChen, Xiao Yang-
dc.contributor.authorSong, Bo-
dc.contributor.authorSchatz, George C.-
dc.contributor.authorStoddart, J. Fraser-
dc.date.accessioned2023-04-24T05:09:30Z-
dc.date.available2023-04-24T05:09:30Z-
dc.date.issued2021-
dc.identifier.citationJournal of the American Chemical Society, 2021, v. 143, n. 7, p. 2886-2895-
dc.identifier.issn0002-7863-
dc.identifier.urihttp://hdl.handle.net/10722/327721-
dc.description.abstractThe charge transport in single-molecule junctions depends critically on the chemical identity of the anchor groups that are used to connect the molecular wires to the electrodes. In this research, we report a new anchoring strategy, called the electrostatic anchor, formed through the efficient Coulombic interaction between the gold electrodes and the positively charged pyridinium terminal groups. Our results show that these pyridinium groups serve as efficient electrostatic anchors forming robust gold-molecule-gold junctions. We have also observed binary switching in dicationic viologen molecular junctions, demonstrating an electron injection-induced redox switching in single-molecule junctions. We attribute the difference in low- and high-conductance states to a dicationic ground state and a radical cationic metastable state, respectively. Overall, this anchoring strategy and redox-switching mechanism could constitute the basis for a new class of redox-activated single-molecule switches.-
dc.languageeng-
dc.relation.ispartofJournal of the American Chemical Society-
dc.titleSingle-molecule charge transport through positively charged electrostatic anchors-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/jacs.0c12664-
dc.identifier.pmid33577309-
dc.identifier.scopuseid_2-s2.0-85101716880-
dc.identifier.volume143-
dc.identifier.issue7-
dc.identifier.spage2886-
dc.identifier.epage2895-
dc.identifier.eissn1520-5126-
dc.identifier.isiWOS:000623246000036-

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