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Article: Changes in the electronic properties of a molecule when it is wired into a circuit

TitleChanges in the electronic properties of a molecule when it is wired into a circuit
Authors
Issue Date2002
Citation
Journal Of Physical Chemistry B, 2002, v. 106 n. 34, p. 8609-8614 How to Cite?
AbstractMolecular electronic devices require at least two electrical contacts to one (or more) molecule(s). Single molecules are reliably probed by bonding one end to a gold substrate and the other end to a gold nanocrystal. The circuit is completed with a gold-coated atomic force microscope probe. Measurements of the decay of electronic current with the length of n-alkanedithiol molecules in these single-molecule nanojunctions are reported as a function of the applied bias. The value of the decay constant near zero bias was obtained from measurements in the ohmic region of the current-voltage curves. The electron tunneling decay rate is significantly smaller (βN = 0.57 ± 0.03) than observed for molecules bonded at just one end (βN ≈ 1), and it falls to even smaller values as the applied bias is increased. Both these effects are quantitatively accounted for by a large shift in molecular levels caused by the attachment of wires at each end.
Persistent Identifierhttp://hdl.handle.net/10722/174835
ISSN
2001 Impact Factor: 3.379
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorCui, XDen_US
dc.contributor.authorPrimak, Aen_US
dc.contributor.authorZarate, Xen_US
dc.contributor.authorTomfohr, Jen_US
dc.contributor.authorSankey, OFen_US
dc.contributor.authorMoore, ALen_US
dc.contributor.authorMoore, TAen_US
dc.contributor.authorGust, Den_US
dc.contributor.authorNagahara, LAen_US
dc.contributor.authorLindsay, SMen_US
dc.date.accessioned2012-11-26T08:47:44Z-
dc.date.available2012-11-26T08:47:44Z-
dc.date.issued2002en_US
dc.identifier.citationJournal Of Physical Chemistry B, 2002, v. 106 n. 34, p. 8609-8614en_US
dc.identifier.issn1089-5647en_US
dc.identifier.urihttp://hdl.handle.net/10722/174835-
dc.description.abstractMolecular electronic devices require at least two electrical contacts to one (or more) molecule(s). Single molecules are reliably probed by bonding one end to a gold substrate and the other end to a gold nanocrystal. The circuit is completed with a gold-coated atomic force microscope probe. Measurements of the decay of electronic current with the length of n-alkanedithiol molecules in these single-molecule nanojunctions are reported as a function of the applied bias. The value of the decay constant near zero bias was obtained from measurements in the ohmic region of the current-voltage curves. The electron tunneling decay rate is significantly smaller (βN = 0.57 ± 0.03) than observed for molecules bonded at just one end (βN ≈ 1), and it falls to even smaller values as the applied bias is increased. Both these effects are quantitatively accounted for by a large shift in molecular levels caused by the attachment of wires at each end.en_US
dc.languageengen_US
dc.relation.ispartofJournal of Physical Chemistry Ben_US
dc.titleChanges in the electronic properties of a molecule when it is wired into a circuiten_US
dc.typeArticleen_US
dc.identifier.emailCui, XD: xdcui@hku.hken_US
dc.identifier.authorityCui, XD=rp00689en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1021/jp0206065en_US
dc.identifier.scopuseid_2-s2.0-0037194939en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037194939&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume106en_US
dc.identifier.issue34en_US
dc.identifier.spage8609en_US
dc.identifier.epage8614en_US
dc.identifier.isiWOS:000177705200017-
dc.identifier.scopusauthoridCui, XD=10839907500en_US
dc.identifier.scopusauthoridPrimak, A=7003676297en_US
dc.identifier.scopusauthoridZarate, X=6507745461en_US
dc.identifier.scopusauthoridTomfohr, J=6603628325en_US
dc.identifier.scopusauthoridSankey, OF=7005229707en_US
dc.identifier.scopusauthoridMoore, AL=35598466200en_US
dc.identifier.scopusauthoridMoore, TA=7403336040en_US
dc.identifier.scopusauthoridGust, D=7006130117en_US
dc.identifier.scopusauthoridNagahara, LA=7004379513en_US
dc.identifier.scopusauthoridLindsay, SM=35595480000en_US

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