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Long-range electron tunnelling in oligo-porphyrin molecular wires

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Long-range electron tunnelling in oligo-porphyrin molecular wires. / Sedghi, Gita; Garcia-Suarez, Victor M.; Esdaile, Louisa J. et al.
In: Nature Nanotechnology, Vol. 6, No. 8, 08.2011, p. 517-523.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Sedghi, G, Garcia-Suarez, VM, Esdaile, LJ, Anderson, HL, Lambert, CJ, Martin, S, Bethell, D, Higgins, SJ, Elliott, M, Bennett, N, Macdonald, JE & Nichols, RJ 2011, 'Long-range electron tunnelling in oligo-porphyrin molecular wires', Nature Nanotechnology, vol. 6, no. 8, pp. 517-523. https://doi.org/10.1038/NNANO.2011.111

APA

Sedghi, G., Garcia-Suarez, V. M., Esdaile, L. J., Anderson, H. L., Lambert, C. J., Martin, S., Bethell, D., Higgins, S. J., Elliott, M., Bennett, N., Macdonald, J. E., & Nichols, R. J. (2011). Long-range electron tunnelling in oligo-porphyrin molecular wires. Nature Nanotechnology, 6(8), 517-523. https://doi.org/10.1038/NNANO.2011.111

Vancouver

Sedghi G, Garcia-Suarez VM, Esdaile LJ, Anderson HL, Lambert CJ, Martin S et al. Long-range electron tunnelling in oligo-porphyrin molecular wires. Nature Nanotechnology. 2011 Aug;6(8):517-523. doi: 10.1038/NNANO.2011.111

Author

Sedghi, Gita ; Garcia-Suarez, Victor M. ; Esdaile, Louisa J. et al. / Long-range electron tunnelling in oligo-porphyrin molecular wires. In: Nature Nanotechnology. 2011 ; Vol. 6, No. 8. pp. 517-523.

Bibtex

@article{21f7de32e3af435aba0d82e4255c7a5b,
title = "Long-range electron tunnelling in oligo-porphyrin molecular wires",
abstract = "Short chains of porphyrin molecules can mediate electron transport over distances as long as 5-10 nm with low attenuation. This means that porphyrin-based molecular wires could be useful in nanoelectronic and photovoltaic devices, but the mechanisms responsible for charge transport in single oligo-porphyrin wires have not yet been established. Here, based on electrical measurements of single-molecule junctions, we show that the conductance of the oligo-porphyrin wires has a strong dependence on temperature, and a weak dependence on the length of the wire. Although it is widely accepted that such behaviour is a signature of a thermally assisted incoherent ( hopping) mechanism, density functional theory calculations and an accompanying analytical model strongly suggest that the observed temperature and length dependence is consistent with phase-coherent tunnelling through the whole molecular junction.",
author = "Gita Sedghi and Garcia-Suarez, {Victor M.} and Esdaile, {Louisa J.} and Anderson, {Harry L.} and Lambert, {Colin J.} and Santiago Martin and Donald Bethell and Higgins, {Simon J.} and Martin Elliott and Neil Bennett and Macdonald, {J. Emyr} and Nichols, {Richard J.}",
year = "2011",
month = aug,
doi = "10.1038/NNANO.2011.111",
language = "English",
volume = "6",
pages = "517--523",
journal = "Nature Nanotechnology",
issn = "1748-3387",
publisher = "Nature Publishing Group",
number = "8",

}

RIS

TY - JOUR

T1 - Long-range electron tunnelling in oligo-porphyrin molecular wires

AU - Sedghi, Gita

AU - Garcia-Suarez, Victor M.

AU - Esdaile, Louisa J.

AU - Anderson, Harry L.

AU - Lambert, Colin J.

AU - Martin, Santiago

AU - Bethell, Donald

AU - Higgins, Simon J.

AU - Elliott, Martin

AU - Bennett, Neil

AU - Macdonald, J. Emyr

AU - Nichols, Richard J.

PY - 2011/8

Y1 - 2011/8

N2 - Short chains of porphyrin molecules can mediate electron transport over distances as long as 5-10 nm with low attenuation. This means that porphyrin-based molecular wires could be useful in nanoelectronic and photovoltaic devices, but the mechanisms responsible for charge transport in single oligo-porphyrin wires have not yet been established. Here, based on electrical measurements of single-molecule junctions, we show that the conductance of the oligo-porphyrin wires has a strong dependence on temperature, and a weak dependence on the length of the wire. Although it is widely accepted that such behaviour is a signature of a thermally assisted incoherent ( hopping) mechanism, density functional theory calculations and an accompanying analytical model strongly suggest that the observed temperature and length dependence is consistent with phase-coherent tunnelling through the whole molecular junction.

AB - Short chains of porphyrin molecules can mediate electron transport over distances as long as 5-10 nm with low attenuation. This means that porphyrin-based molecular wires could be useful in nanoelectronic and photovoltaic devices, but the mechanisms responsible for charge transport in single oligo-porphyrin wires have not yet been established. Here, based on electrical measurements of single-molecule junctions, we show that the conductance of the oligo-porphyrin wires has a strong dependence on temperature, and a weak dependence on the length of the wire. Although it is widely accepted that such behaviour is a signature of a thermally assisted incoherent ( hopping) mechanism, density functional theory calculations and an accompanying analytical model strongly suggest that the observed temperature and length dependence is consistent with phase-coherent tunnelling through the whole molecular junction.

UR - http://www.scopus.com/inward/record.url?scp=79961209824&partnerID=8YFLogxK

U2 - 10.1038/NNANO.2011.111

DO - 10.1038/NNANO.2011.111

M3 - Journal article

VL - 6

SP - 517

EP - 523

JO - Nature Nanotechnology

JF - Nature Nanotechnology

SN - 1748-3387

IS - 8

ER -