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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) Molecular tweezer 23, arrows indicatedirectionof contraction. (b) Clip 25, where the aa form is favored in the presence of a guest. (c) Clip 26, where ion binding enhances guest affinity. (d) Crystal structureof uncomplexed and complexed 24.282,283,286,287 X-ray crystal structure reprinted with permission from ref (282). Copyright 2007 AmericanChemical Society.
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fig16: (a) Molecular tweezer 23, arrows indicatedirectionof contraction. (b) Clip 25, where the aa form is favored in the presence of a guest. (c) Clip 26, where ion binding enhances guest affinity. (d) Crystal structureof uncomplexed and complexed 24.282,283,286,287 X-ray crystal structure reprinted with permission from ref (282). Copyright 2007 AmericanChemical Society.

Mentions: Organic guests can also cause large-scale changes to hostmolecules,as they maximize favorable interactions such as in molecular tweezer 23 (Figure 16) where the distance between sidewalls halves on binding certainguests.280,281 A large amplitude change was observed inthe flexible system 24 with an extended conformationbeing exchanged for a more rigid “sandwich” form tomaximize guest binding.282 Guest-inducedchange is also observed in clip 25 where the sa form predominates in solution in the absence of a guest, but the aa form dominates in the presence of a suitable guest (Figure 16).283−285 This system has been further modified in 26 where thebinding of a potassium ion to each crown ether preorganizes the systemfor organic guest binding with increased affinity.286


Artificial Molecular Machines.

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

(a) Molecular tweezer 23, arrows indicatedirectionof contraction. (b) Clip 25, where the aa form is favored in the presence of a guest. (c) Clip 26, where ion binding enhances guest affinity. (d) Crystal structureof uncomplexed and complexed 24.282,283,286,287 X-ray crystal structure reprinted with permission from ref (282). Copyright 2007 AmericanChemical Society.
© Copyright Policy
Related In: Results  -  Collection

License
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getmorefigures.php?uid=PMC4585175&req=5

fig16: (a) Molecular tweezer 23, arrows indicatedirectionof contraction. (b) Clip 25, where the aa form is favored in the presence of a guest. (c) Clip 26, where ion binding enhances guest affinity. (d) Crystal structureof uncomplexed and complexed 24.282,283,286,287 X-ray crystal structure reprinted with permission from ref (282). Copyright 2007 AmericanChemical Society.
Mentions: Organic guests can also cause large-scale changes to hostmolecules,as they maximize favorable interactions such as in molecular tweezer 23 (Figure 16) where the distance between sidewalls halves on binding certainguests.280,281 A large amplitude change was observed inthe flexible system 24 with an extended conformationbeing exchanged for a more rigid “sandwich” form tomaximize guest binding.282 Guest-inducedchange is also observed in clip 25 where the sa form predominates in solution in the absence of a guest, but the aa form dominates in the presence of a suitable guest (Figure 16).283−285 This system has been further modified in 26 where thebinding of a potassium ion to each crown ether preorganizes the systemfor organic guest binding with increased affinity.286

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