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Article: Changes in the electronic properties of a molecule when it is wired into a circuit
Title | Changes in the electronic properties of a molecule when it is wired into a circuit |
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Authors | |
Issue Date | 2002 |
Citation | Journal Of Physical Chemistry B, 2002, v. 106 n. 34, p. 8609-8614 How to Cite? |
Abstract | Molecular 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 Identifier | http://hdl.handle.net/10722/174835 |
ISSN | |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Cui, XD | en_US |
dc.contributor.author | Primak, A | en_US |
dc.contributor.author | Zarate, X | en_US |
dc.contributor.author | Tomfohr, J | en_US |
dc.contributor.author | Sankey, OF | en_US |
dc.contributor.author | Moore, AL | en_US |
dc.contributor.author | Moore, TA | en_US |
dc.contributor.author | Gust, D | en_US |
dc.contributor.author | Nagahara, LA | en_US |
dc.contributor.author | Lindsay, SM | en_US |
dc.date.accessioned | 2012-11-26T08:47:44Z | - |
dc.date.available | 2012-11-26T08:47:44Z | - |
dc.date.issued | 2002 | en_US |
dc.identifier.citation | Journal Of Physical Chemistry B, 2002, v. 106 n. 34, p. 8609-8614 | en_US |
dc.identifier.issn | 1089-5647 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/174835 | - |
dc.description.abstract | Molecular 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.language | eng | en_US |
dc.relation.ispartof | Journal of Physical Chemistry B | en_US |
dc.title | Changes in the electronic properties of a molecule when it is wired into a circuit | en_US |
dc.type | Article | en_US |
dc.identifier.email | Cui, XD: xdcui@hku.hk | en_US |
dc.identifier.authority | Cui, XD=rp00689 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1021/jp0206065 | en_US |
dc.identifier.scopus | eid_2-s2.0-0037194939 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0037194939&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 106 | en_US |
dc.identifier.issue | 34 | en_US |
dc.identifier.spage | 8609 | en_US |
dc.identifier.epage | 8614 | en_US |
dc.identifier.isi | WOS:000177705200017 | - |
dc.identifier.scopusauthorid | Cui, XD=10839907500 | en_US |
dc.identifier.scopusauthorid | Primak, A=7003676297 | en_US |
dc.identifier.scopusauthorid | Zarate, X=6507745461 | en_US |
dc.identifier.scopusauthorid | Tomfohr, J=6603628325 | en_US |
dc.identifier.scopusauthorid | Sankey, OF=7005229707 | en_US |
dc.identifier.scopusauthorid | Moore, AL=35598466200 | en_US |
dc.identifier.scopusauthorid | Moore, TA=7403336040 | en_US |
dc.identifier.scopusauthorid | Gust, D=7006130117 | en_US |
dc.identifier.scopusauthorid | Nagahara, LA=7004379513 | en_US |
dc.identifier.scopusauthorid | Lindsay, SM=35595480000 | en_US |