A rack-and-pinion device at the molecular scale

Abstract

Molecular machines, and in particular molecular motors with synthetic molecular structures and fuelled by external light, voltage or chemical conversions, have recently been reported1,2,3,4,5,6. Most of these experiments are carried out in solution with a large ensemble of molecules and without access to one molecule at a time, a key point for future use of single molecular machines with an atomic scale precision. Therefore, to experiment on a single molecule-machine, this molecule has to be adsorbed on a surface, imaged and manipulated with the tip of a scanning tunnelling microscope (STM)7,8,9,10. A few experiments of this type have described molecular mechanisms in which a rotational movement of a single molecule is involved. However, until now, only uncontrolled rotations11,12,13 or indirect signatures14,15 of a rotation have been reported. In this work, we present a molecular rack-and-pinion device for which an STM tip drives a single pinion molecule at low temperature. The pinion is a 1.8-nm-diameter molecule functioning as a six-toothed wheel interlocked at the edge of a self-assembled molecular island acting as a rack. We monitor the rotation of the pinion molecule tooth by tooth along the rack by a chemical tag attached to one of its cogs.

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Figure 1: A molecular rack and pinion.
Figure 2: A localized resonant-tunnelling state working as a marker.
Figure 3: A rack-and-pinion device at the molecular scale.
Figure 4: Mechanical behaviour of the system.

References

  1. 1

    Fletcher, S. P., Dumur, F., Pollard, M. M. & Feringa, B. L. A reversible, unidirectional molecular rotary motor driven by chemical energy. Science 310, 80–82 (2006).

    Article  Google Scholar 

  2. 2

    Pijper, D., van Delden, R. A., Meetsma, A. & Feringa, B. L. Acceleration of a nanomotor: Electronic control of the rotary speed of a light-driven molecular rotor. J. Am. Chem. Soc. 127, 17612–17613 (2005).

    CAS  Article  Google Scholar 

  3. 3

    Chatterjee, M. N., Kay, E. R. & Leigh, D. A. Beyond switches: Ratcheting a particle energetically uphill with a compartmentalized molecular machine. J. Am. Chem. Soc. 128, 4058–4073 (2006).

    CAS  Article  Google Scholar 

  4. 4

    Van Delden, R. A., Koumura, N., Schoevaars, A., Meetsma, A. & Feringa, B. L. A donor–acceptor substituted molecular motor: Unidirectional rotation driven by visible light. Org. Biomol. Chem. 1, 33–35 (2003).

    CAS  Article  Google Scholar 

  5. 5

    Hernandez, J. V., Kay, E. R. & Leigh, D. A. A reversible synthetic rotary molecular motor. Science 306, 1532–1537 (2004).

    CAS  Article  Google Scholar 

  6. 6

    Van Delden, R. A. et al. Unidirectional molecular motor on a gold surface. Nature 437, 1337–1340 (2005).

    CAS  Article  Google Scholar 

  7. 7

    Eigler, D. M. & Schweizer, E. K. Positioning single atoms with a scanning tunnelling microscope. Nature 344, 524–526 (1990).

    CAS  Article  Google Scholar 

  8. 8

    Meyer, G. & Rieder, K. H. Controlled manipulation of single atoms and small molecules with the scanning tunnelling microscope. Surf. Sci. 377, 1087–1093 (1997).

    Article  Google Scholar 

  9. 9

    Jung, T. A., Schlittler, R. R., Gimzewski, J. K., Tang, H. & Joachim, C. Controlled room-temperature positioning of individual molecules: Molecular flexure and motion. Science 271, 181–184 (1996).

    CAS  Article  Google Scholar 

  10. 10

    Moresco, F. et al. Low temperature manipulation of big molecules in constant height mode. Appl. Phys. Lett. 78, 306–308 (2001).

    CAS  Article  Google Scholar 

  11. 11

    Shirai, Y., Osgood, A. J., Zhao, Y. M., Kelly, K. F. & Tour, J. M. Directional control in thermally driven single-molecule nanocars. Nano Lett. 5, 2330–2334 (2005).

    CAS  Article  Google Scholar 

  12. 12

    Shirai, Y. et al. Surface-rolling molecules. J. Am. Chem. Soc. 128, 4854–4864 (2006).

    CAS  Article  Google Scholar 

  13. 13

    Gimzewski, J. K. et al. Rotation of a single molecule within a supramolecular bearing. Science 281, 531–533 (1998).

    CAS  Article  Google Scholar 

  14. 14

    Keeling, D. L. et al. Bond breaking coupled with translation in rolling of covalently bound molecules. Phys. Rev. Lett. 94, 146104 (2005).

    CAS  Article  Google Scholar 

  15. 15

    Vaughan, O. P. H., Williams, F. J., Bampos, N. & Lambert, R. M. A chemical switchable molecular pinwheel. Ang. Chem. Int. Edn 45, 3779–3781 (2006).

    CAS  Article  Google Scholar 

  16. 16

    Gross, L. et al. Tailoring molecular self-organization by chemical synthesis: Hexaphenylbenzene, hexa-peri-hexabenzocoronene, and derivatives on Cu(111). Phys. Rev. B 71, 165428 (2005).

    Article  Google Scholar 

  17. 17

    Meyer, G. A simple low-temperature ultrahigh-vacuum scanning tunnelling microscope capable of atomic manipulation. Rev. Sci. Instrum. 67, 2960–2965 (1996).

    CAS  Article  Google Scholar 

  18. 18

    Sautet, P. & Joachim, C. Calculation of benzene on rhodium STM images. Chem. Phys. Lett. 185, 23–27 (1991).

    CAS  Article  Google Scholar 

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Acknowledgements

We gratefully acknowledge partial funding by the Volkswagen Foundation Project ‘Single molecule synthesis’ and the European Projects NANOMAN and AMMIST.

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F.C., L.G. and F.M. were responsible for the experimental STM work, A.G. and C.J. for the molecular design and A.G. for the chemical synthesis; S.S. and C.J. were in charge of the theory and of the STM image calculation and interpretation and K.H.R. was responsible for the planning of the experiments.

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Correspondence to Christian Joachim.

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The authors declare no competing financial interests.

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Chiaravalloti, F., Gross, L., Rieder, K. et al. A rack-and-pinion device at the molecular scale. Nature Mater 6, 30–33 (2007). https://doi.org/10.1038/nmat1802

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