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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) Chemical structure of a molecular brake 40 witha 2,5-dimethylbenzene unit as the rotor. (b) X-ray crystal structure.(c) Schematic representation of this photoinduced molecular brake.X-ray crystal structure reprinted with permission from ref (418). Copyright 2011 Wiley-VCHVerlag GmbH & Co. KGaA, Weinheim.
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fig17: (a) Chemical structure of a molecular brake 40 witha 2,5-dimethylbenzene unit as the rotor. (b) X-ray crystal structure.(c) Schematic representation of this photoinduced molecular brake.X-ray crystal structure reprinted with permission from ref (418). Copyright 2011 Wiley-VCHVerlag GmbH & Co. KGaA, Weinheim.

Mentions: Molecular scissors 38, described by Aida and co-workers,consist of an azobenzene unit and a ferrocene unit (Scheme 13a).413,415 The open and closed forms were interconverted by photoisomerizationof the double bond of the azobenzene unit, which led to an angularchange of 49° around the cyclopentadienyl rings of the ferrocene.Another example was the synthesis of the molecular hinge 39 where two xanthene rings were connected by −N=N–linkers (Scheme 13b).414 Photoisomerization at 366 nm fromthe trans/trans, which is almostplanar, to the cis/cis state resultedin a change of approximately 90° in the angle between the twoaromatic rings. Reisomerization could be achieved by irradiation at436 nm. Azobenzenes have been used for the construction of photoswitchableazo-macrocycles.389,416 Azo-macrocycles have found applicationsin host–guest chemistry as they can selectively and reversiblybind ions. Cyclic azobenzenes have been used to switch on or off therotation of subunits.417,418 A recent example showed thatthe rotation of a 2,5-dimethylbenzene rotor in the cyclic azobenzene 40 could be switched off in the E-isomerof the azobenzene, while rotation was allowed in the Z-isomer (Figure 17).


Artificial Molecular Machines.

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

(a) Chemical structure of a molecular brake 40 witha 2,5-dimethylbenzene unit as the rotor. (b) X-ray crystal structure.(c) Schematic representation of this photoinduced molecular brake.X-ray crystal structure reprinted with permission from ref (418). Copyright 2011 Wiley-VCHVerlag GmbH & Co. KGaA, Weinheim.
© Copyright Policy
Related In: Results  -  Collection

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

fig17: (a) Chemical structure of a molecular brake 40 witha 2,5-dimethylbenzene unit as the rotor. (b) X-ray crystal structure.(c) Schematic representation of this photoinduced molecular brake.X-ray crystal structure reprinted with permission from ref (418). Copyright 2011 Wiley-VCHVerlag GmbH & Co. KGaA, Weinheim.
Mentions: Molecular scissors 38, described by Aida and co-workers,consist of an azobenzene unit and a ferrocene unit (Scheme 13a).413,415 The open and closed forms were interconverted by photoisomerizationof the double bond of the azobenzene unit, which led to an angularchange of 49° around the cyclopentadienyl rings of the ferrocene.Another example was the synthesis of the molecular hinge 39 where two xanthene rings were connected by −N=N–linkers (Scheme 13b).414 Photoisomerization at 366 nm fromthe trans/trans, which is almostplanar, to the cis/cis state resultedin a change of approximately 90° in the angle between the twoaromatic rings. Reisomerization could be achieved by irradiation at436 nm. Azobenzenes have been used for the construction of photoswitchableazo-macrocycles.389,416 Azo-macrocycles have found applicationsin host–guest chemistry as they can selectively and reversiblybind ions. Cyclic azobenzenes have been used to switch on or off therotation of subunits.417,418 A recent example showed thatthe rotation of a 2,5-dimethylbenzene rotor in the cyclic azobenzene 40 could be switched off in the E-isomerof the azobenzene, while rotation was allowed in the Z-isomer (Figure 17).

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.