Publikation:

Characteristics of amine-ended and thiol-ended alkane single-molecule junctions revealed by inelastic electron tunneling spectroscopy

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2011

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http://nbn-resolving.de/urn:nbn:de:bsz:352-140041
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https://doi.org/10.1021/nn200759s
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ACS Nano. 2011, 5(5), pp. 4104-4111. ISSN 1936-0851. eISSN 1936-086X. Available under: doi: 10.1021/nn200759s

Zusammenfassung

A combined experimental and theoretical analysis of the charge transport through single-molecule junctions is performed to define the influence of molecular end groups for increasing electrode separation. For both amine-ended and thiol-ended octanes contacted to gold electrodes, we study signatures of chain formation by analyzing kinks in conductance traces, the junction length, and inelastic electron tunneling spectroscopy. The results show that for amine-ended molecular junctions no atomic chains are pulled under stretching, whereas the Au electrodes strongly deform for thiol-ended molecular junctions. This advanced approach hence provides unambiguous evidence that the amine anchors bind only weakly to Au.

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Fachgebiet (DDC)
530 Physik

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molecular electronics . conductance measurement . inelastic electron tunneling spectroscopy . single-molecule junction . anchoring groups . density functional theory

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ISO 690KIM, Youngsang, Thomas J. HELLMUTH, Marius BÜRKLE, Fabian PAULY, Elke SCHEER, 2011. Characteristics of amine-ended and thiol-ended alkane single-molecule junctions revealed by inelastic electron tunneling spectroscopy. In: ACS Nano. 2011, 5(5), pp. 4104-4111. ISSN 1936-0851. eISSN 1936-086X. Available under: doi: 10.1021/nn200759s
BibTex
@article{Kim2011-05-24Chara-14004,
  year={2011},
  doi={10.1021/nn200759s},
  title={Characteristics of amine-ended and thiol-ended alkane single-molecule junctions revealed by inelastic electron tunneling spectroscopy},
  number={5},
  volume={5},
  issn={1936-0851},
  journal={ACS Nano},
  pages={4104--4111},
  author={Kim, Youngsang and Hellmuth, Thomas J. and Bürkle, Marius and Pauly, Fabian and Scheer, Elke}
}
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