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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
5
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pubmed:dateCreated |
2006-2-1
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pubmed:abstractText |
Light excitation powers the reversible shuttling movement of the ring component of a rotaxane between two stations located at a 1.3-nm distance on its dumbbell-shaped component. The photoinduced shuttling movement, which occurs in solution, is based on a "four-stroke" synchronized sequence of electronic and nuclear processes. At room temperature the deactivation time of the high-energy charge-transfer state obtained by light excitation is approximately 10 micros, and the time period required for the ring-displacement process is on the order of 100 micros. The rotaxane behaves as an autonomous linear motor and operates with a quantum efficiency up to approximately 12%. The investigated system is a unique example of an artificial linear nanomotor because it gathers together the following features: (i) it is powered by visible light (e.g., sunlight); (ii) it exhibits autonomous behavior, like motor proteins; (iii) it does not generate waste products; (iv) its operation can rely only on intramolecular processes, allowing in principle operation at the single-molecule level; (v) it can be driven at a frequency of 1 kHz; (vi) it works in mild environmental conditions (i.e., fluid solution at ambient temperature); and (vii) it is stable for at least 10(3) cycles.
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pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/16432207-10490021,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16432207-10490022,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16432207-11251112,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16432207-11929970,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16432207-12628343,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16432207-15031499,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16432207-15070371,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16432207-15366866,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16432207-15563181,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16432207-15567858,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16432207-15677314,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16432207-15998079,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16432207-16006520,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16432207-16127455,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16432207-16251960,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16432207-9548252
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
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pubmed:status |
MEDLINE
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pubmed:month |
Jan
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pubmed:issn |
0027-8424
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:day |
31
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pubmed:volume |
103
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1178-83
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pubmed:dateRevised |
2009-11-18
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pubmed:meshHeading |
pubmed-meshheading:16432207-Absorption,
pubmed-meshheading:16432207-Electrochemistry,
pubmed-meshheading:16432207-Electronics,
pubmed-meshheading:16432207-Electrons,
pubmed-meshheading:16432207-Kinetics,
pubmed-meshheading:16432207-Light,
pubmed-meshheading:16432207-Luminescence,
pubmed-meshheading:16432207-Magnetic Resonance Spectroscopy,
pubmed-meshheading:16432207-Models, Molecular,
pubmed-meshheading:16432207-Molecular Conformation,
pubmed-meshheading:16432207-Molecular Motor Proteins,
pubmed-meshheading:16432207-Movement,
pubmed-meshheading:16432207-Nanotechnology,
pubmed-meshheading:16432207-Phenothiazines,
pubmed-meshheading:16432207-Photochemistry,
pubmed-meshheading:16432207-Photolysis,
pubmed-meshheading:16432207-Rotaxanes,
pubmed-meshheading:16432207-Spectrophotometry,
pubmed-meshheading:16432207-Sunlight,
pubmed-meshheading:16432207-Temperature,
pubmed-meshheading:16432207-Time Factors,
pubmed-meshheading:16432207-Ultraviolet Rays
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pubmed:year |
2006
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pubmed:articleTitle |
Autonomous artificial nanomotor powered by sunlight.
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pubmed:affiliation |
Dipartimento di Chimica G. Ciamician, Università di Bologna, via Selmi 2, 40126 Bologna, Italy. vincenzo.balzani@unibo.it
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, Non-U.S. Gov't
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