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Artificial Molecular Machines.

Erbas-Cakmak S, Leigh DA, McTernan CT, Nussbaumer AL - Chem. Rev. (2015)

View Article: PubMed Central - PubMed

Affiliation: School of Chemistry, University of Manchester , Oxford Road, Manchester M13 9PL, United Kingdom.

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bonded molecules and on catenanes and rotaxanes in which switching of other protic solvents... This effect (listed in descending binding ability) stations on the thread, macrocycle In these systems, fast-responding reporters are preferred... practical applications by utilizing molecular scale changes to create macroscopic effects... The thread of these rotaxanes included an anthracene fluorophore similar application in synthetic polymers often furnishes a useful result... of Brownian motion can be exploited to great effect in the synthesis every aspect of functional molecule and materials design... An improved robotics” in which ratcheted motions of molecular components

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(a) Structureof a cerium-centered double-decker molecule. (b)STM micrographs of the molecules assembled on Au(111) surface. Thetwo distinct isomers, due rotational chirality, are shown in whiteand blue crosses. (c) Space-filling model of the two chiral species.Reprinted with permission from ref (1134). Copyright 2011 American Chemical Society.
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fig39: (a) Structureof a cerium-centered double-decker molecule. (b)STM micrographs of the molecules assembled on Au(111) surface. Thetwo distinct isomers, due rotational chirality, are shown in whiteand blue crosses. (c) Space-filling model of the two chiral species.Reprinted with permission from ref (1134). Copyright 2011 American Chemical Society.

Mentions: The rotation of dialkylthioethersadsorbed on Cu(111) surfaceshas been extensively studied and electrons from an STM tip found todrive a 5% bias in rotational direction.1133 Electrical excitation of C–H stretching modes in the moleculecontributed to ratcheting in the rotation. The direction and rateof rotation depended on the chiralities of both the molecule and theSTM tip. In a cerium-centered double-decker molecule self-assembledon a Au(111) surface, an interesting phenomenon was detected (Figure 39).1134 The rotational chirality of individual moleculesgenerated two different orientations on the gold surface, which couldclearly be distinguished by STM. Upon scanning the surface with theSTM tip, an irreversible, abrupt change in the chirality of some ofthe molecules was observed. The switch resulted from the rotationof the upper porphyrins, and the irreversibility was attributed todamage caused to the molecules by the high applied voltage.


Artificial Molecular Machines.

Erbas-Cakmak S, Leigh DA, McTernan CT, Nussbaumer AL - Chem. Rev. (2015)

(a) Structureof a cerium-centered double-decker molecule. (b)STM micrographs of the molecules assembled on Au(111) surface. Thetwo distinct isomers, due rotational chirality, are shown in whiteand blue crosses. (c) Space-filling model of the two chiral species.Reprinted with permission from ref (1134). Copyright 2011 American Chemical Society.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4585175&req=5

fig39: (a) Structureof a cerium-centered double-decker molecule. (b)STM micrographs of the molecules assembled on Au(111) surface. Thetwo distinct isomers, due rotational chirality, are shown in whiteand blue crosses. (c) Space-filling model of the two chiral species.Reprinted with permission from ref (1134). Copyright 2011 American Chemical Society.
Mentions: The rotation of dialkylthioethersadsorbed on Cu(111) surfaceshas been extensively studied and electrons from an STM tip found todrive a 5% bias in rotational direction.1133 Electrical excitation of C–H stretching modes in the moleculecontributed to ratcheting in the rotation. The direction and rateof rotation depended on the chiralities of both the molecule and theSTM tip. In a cerium-centered double-decker molecule self-assembledon a Au(111) surface, an interesting phenomenon was detected (Figure 39).1134 The rotational chirality of individual moleculesgenerated two different orientations on the gold surface, which couldclearly be distinguished by STM. Upon scanning the surface with theSTM tip, an irreversible, abrupt change in the chirality of some ofthe molecules was observed. The switch resulted from the rotationof the upper porphyrins, and the irreversibility was attributed todamage caused to the molecules by the high applied voltage.

View Article: PubMed Central - PubMed

Affiliation: School of Chemistry, University of Manchester , Oxford Road, Manchester M13 9PL, United Kingdom.

AUTOMATICALLY GENERATED EXCERPT
Please rate it.

bonded molecules and on catenanes and rotaxanes in which switching of other protic solvents... This effect (listed in descending binding ability) stations on the thread, macrocycle In these systems, fast-responding reporters are preferred... practical applications by utilizing molecular scale changes to create macroscopic effects... The thread of these rotaxanes included an anthracene fluorophore similar application in synthetic polymers often furnishes a useful result... of Brownian motion can be exploited to great effect in the synthesis every aspect of functional molecule and materials design... An improved robotics” in which ratcheted motions of molecular components

No MeSH data available.


Related in: MedlinePlus