Electrically driven directional motion of a four-wheeled molecule on a metal surface

@article{Kudernac2011ElectricallyDD,
  title={Electrically driven directional motion of a four-wheeled molecule on a metal surface},
  author={Tibor Kudernac and Nopporn Ruangsupapichat and Manfred Parschau and Beatriz Maci{\'a} and Nathalie Katsonis and Syuzanna R. Harutyunyan and Karl‐Heinz Ernst and Ben L. Feringa},
  journal={Nature},
  year={2011},
  volume={479},
  pages={208-211}
}
Propelling single molecules in a controlled manner along an unmodified surface remains extremely challenging because it requires molecules that can use light, chemical or electrical energy to modulate their interaction with the surface in a way that generates motion. Nature’s motor proteins have mastered the art of converting conformational changes into directed motion, and have inspired the design of artificial systems such as DNA walkers and light- and redox-driven molecular motors. But… 

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References

SHOWING 1-10 OF 33 REFERENCES

Unidirectional molecular motor on a gold surface

It is demonstrated that a light-driven molecular motor capable of repetitive unidirectional rotation can be mounted on the surface of gold nanoparticles.

Rolling a single molecular wheel at the atomic scale.

It is shown how the rolling of a single molecule equipped with two wheels can be induced by the STM tip, and the approach of controlling the intramolecular mechanics provides a path towards the bottom-up assembly of more complex molecular machines.

Directional control in thermally driven single-molecule nanocars.

It is shown that the observed movement of the nanocars is a new type of fullerene-based wheel-like rolling motion, not stick-slip or sliding translation, due to evidence including directional preference in both direct and indirect manipulation and studies of related molecular structures.

A rack-and-pinion device at the molecular scale.

This work presents a molecular rack-and-pinion device for which an STM tip drives a single pinion molecule at low temperature, functioning as a six-toothed wheel interlocked at the edge of a self-assembled molecular island acting as a rack.

Light-driven monodirectional molecular rotor

Attempts to fabricate mechanical devices on the molecular level have yielded analogues of rotors, gears, switches, shuttles, turnstiles and ratchets. Molecular motors, however, have not yet been

Molecular robots guided by prescriptive landscapes

It is demonstrated that previously developed random walkers show elementary robotic behaviour when interacting with a precisely defined environment and single-molecule microscopy observations confirm that such walkers achieve directional movement by sensing and modifying tracks of substrate molecules laid out on a two-dimensional DNA origami landscape.

An atomic switch realized with the scanning tunnelling microscope

THE scanning tunnelling microscope1 (STM) has been employed in recent years in attempts to develop atomic-scale electronic devices, both by examining device-like characteristics in preexisting

Picometer-Scale Electronic Control of Molecular Dynamics Inside a Single Molecule

These experiments demonstrate the feasibility of controlling the molecular dynamics of a single molecule through the localization of the electronic excitation inside the molecule.

Action spectroscopy for single-molecule motion induced by vibrational excitation with a scanning tunneling microscope

We propose an action spectroscopy for single-molecule motion induced by vibrational excitation with a scanning tunneling microscope STM . Calculations of the inelastic tunneling current for

Synthetic molecular motors and mechanical machines.

The exciting successes in taming molecular-level movement thus far are outlined, the underlying principles that all experimental designs must follow, and the early progress made towards utilizing synthetic molecular structures to perform tasks using mechanical motion are highlighted.