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Single-Molecule Solvation-Shell Sensing

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Single-Molecule Solvation-Shell Sensing. / Leary, E.; Hobenreich, H.; Higgins, S. J. et al.
In: Physical review letters, Vol. 102, No. 8, 086801, 27.02.2009, p. -.

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

Harvard

Leary, E, Hobenreich, H, Higgins, SJ, van Zalinge, H, Haiss, W, Nichols, RJ, Finch, CM, Grace, I, Lambert, C, McGrath, R & Smerdon, J 2009, 'Single-Molecule Solvation-Shell Sensing', Physical review letters, vol. 102, no. 8, 086801, pp. -. https://doi.org/10.1103/PhysRevLett.102.086801

APA

Leary, E., Hobenreich, H., Higgins, S. J., van Zalinge, H., Haiss, W., Nichols, R. J., Finch, C. M., Grace, I., Lambert, C., McGrath, R., & Smerdon, J. (2009). Single-Molecule Solvation-Shell Sensing. Physical review letters, 102(8), -. Article 086801. https://doi.org/10.1103/PhysRevLett.102.086801

Vancouver

Leary E, Hobenreich H, Higgins SJ, van Zalinge H, Haiss W, Nichols RJ et al. Single-Molecule Solvation-Shell Sensing. Physical review letters. 2009 Feb 27;102(8):-. 086801. doi: 10.1103/PhysRevLett.102.086801

Author

Leary, E. ; Hobenreich, H. ; Higgins, S. J. et al. / Single-Molecule Solvation-Shell Sensing. In: Physical review letters. 2009 ; Vol. 102, No. 8. pp. -.

Bibtex

@article{3dd1043ee5444604a5ed4fa226868c0d,
title = "Single-Molecule Solvation-Shell Sensing",
abstract = "We present a new route to single-molecule sensing via solvation shells surrounding a current-carrying backbone molecule. As an example, we show that the presence of a water solvation shell {"}gates{"} the conductance of a family of oligothiophene-containing molecular wires, and that the longer the oligothiophene, the larger is the effect. For the longest example studied, the molecular conductance is over 2 orders of magnitude larger in the presence of a shell comprising just 10 water molecules. A first principles theoretical investigation of electron transport through the molecules, using the nonequilibrium Green's function method, shows that water molecules interact directly with the thiophene rings, significantly shifting transport resonances and greatly increasing the conductance. This reversible effect is confirmed experimentally through conductance measurements performed in the presence of moist air and dry argon.",
author = "E. Leary and H. Hobenreich and Higgins, {S. J.} and {van Zalinge}, H. and W. Haiss and Nichols, {R. J.} and Finch, {C. M.} and I. Grace and Colin Lambert and R. McGrath and J. Smerdon",
year = "2009",
month = feb,
day = "27",
doi = "10.1103/PhysRevLett.102.086801",
language = "English",
volume = "102",
pages = "--",
journal = "Physical review letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "8",

}

RIS

TY - JOUR

T1 - Single-Molecule Solvation-Shell Sensing

AU - Leary, E.

AU - Hobenreich, H.

AU - Higgins, S. J.

AU - van Zalinge, H.

AU - Haiss, W.

AU - Nichols, R. J.

AU - Finch, C. M.

AU - Grace, I.

AU - Lambert, Colin

AU - McGrath, R.

AU - Smerdon, J.

PY - 2009/2/27

Y1 - 2009/2/27

N2 - We present a new route to single-molecule sensing via solvation shells surrounding a current-carrying backbone molecule. As an example, we show that the presence of a water solvation shell "gates" the conductance of a family of oligothiophene-containing molecular wires, and that the longer the oligothiophene, the larger is the effect. For the longest example studied, the molecular conductance is over 2 orders of magnitude larger in the presence of a shell comprising just 10 water molecules. A first principles theoretical investigation of electron transport through the molecules, using the nonequilibrium Green's function method, shows that water molecules interact directly with the thiophene rings, significantly shifting transport resonances and greatly increasing the conductance. This reversible effect is confirmed experimentally through conductance measurements performed in the presence of moist air and dry argon.

AB - We present a new route to single-molecule sensing via solvation shells surrounding a current-carrying backbone molecule. As an example, we show that the presence of a water solvation shell "gates" the conductance of a family of oligothiophene-containing molecular wires, and that the longer the oligothiophene, the larger is the effect. For the longest example studied, the molecular conductance is over 2 orders of magnitude larger in the presence of a shell comprising just 10 water molecules. A first principles theoretical investigation of electron transport through the molecules, using the nonequilibrium Green's function method, shows that water molecules interact directly with the thiophene rings, significantly shifting transport resonances and greatly increasing the conductance. This reversible effect is confirmed experimentally through conductance measurements performed in the presence of moist air and dry argon.

UR - http://www.scopus.com/inward/record.url?scp=61449262831&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.102.086801

DO - 10.1103/PhysRevLett.102.086801

M3 - Journal article

VL - 102

SP - -

JO - Physical review letters

JF - Physical review letters

SN - 0031-9007

IS - 8

M1 - 086801

ER -