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Science 7 October 2005:
Vol. 310. no. 5745, pp. 80 - 82
DOI: 10.1126/science.1117090
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Reports

A Reversible, Unidirectional Molecular Rotary Motor Driven by Chemical Energy

Stephen P. Fletcher, Frédéric Dumur, Michael M. Pollard, Ben L. Feringa*

With the long-term goal of producing nanometer-scale machines, we describe here the unidirectional rotary motion of a synthetic molecular structure fueled by chemical conversions. The basis of the rotation is the movement of a phenyl rotor relative to a naphthyl stator about a single bond axle. The sense of rotation is governed by the choice of chemical reagents that power the motor through four chemically distinct stations. Within the stations, the rotor is held in place by structural features that limit the extent of the rotor's Brownian motion relative to the stator.

Department of Organic and Molecular Inorganic Chemistry, Stratingh Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, Netherlands.

* To whom correspondence should be addressed. E-mail: b.l.feringa{at}chem.rug.nl

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Folding of a donor-acceptor polyrotaxane by using noncovalent bonding interactions.
W. Zhang, W. R. Dichtel, A. Z. Stieg, D. Benitez, J. K. Gimzewski, J. R. Heath, and J. F. Stoddart (2008)
PNAS 105, 6514-6519
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A 16-bit parallel processing in a molecular assembly.
A. Bandyopadhyay and S. Acharya (2008)
PNAS 105, 3668-3672
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Science. ISSN 0036-8075 (print), 1095-9203 (online)