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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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Nonpolar 95 and dipolar 96 altitudinalrotors mounted on an Au(111) surface. Note that rotor and flankingaryl rings are arbitrarily shown perpendicular to the surface forclarity.966
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fig35: Nonpolar 95 and dipolar 96 altitudinalrotors mounted on an Au(111) surface. Note that rotor and flankingaryl rings are arbitrarily shown perpendicular to the surface forclarity.966

Mentions: Several examples of surface-mounted molecular rotors havebeenreported where motion could be driven by alternating electric fieldsor the absorption of pulses of light.952−962 Michl and co-workers synthesized, on the basis of computationalstudies, a series of surface-mounted rotors.963−965Figure 35 showsthe structure of polar and nonpolar versions of their altitudinalrotor. Polar rotor 96 consisted of a 9,10-dihydrophenanthrenesubstituted by four fluorine atoms on the central ring and had a calculateddipole moment of 3.7 D. The nonpolar rotor was a 4,5,9,10-tetrahydropyrenewhose D2 symmetry precluded a dipole moment.X-ray photoelectron spectroscopy (XPS), scanning tunneling microscopy(STM), and IR spectroscopy showed that for a fraction of the molecules,the static electric field from an STM tip induced a change in theorientation of the polar rotor, but not in the nonpolar analogue.966 Several molecular dynamics simulations studyingthe influence of an electric field or a fluid flow on the rotationof a molecule fixed on a surface have been published by the same group.967,968 One recent example simulated carborane-based molecular propellersand showed that they could be successfully driven at GHz rates byan oscillating electric field or by a flow of gas.969


Artificial Molecular Machines.

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

Nonpolar 95 and dipolar 96 altitudinalrotors mounted on an Au(111) surface. Note that rotor and flankingaryl rings are arbitrarily shown perpendicular to the surface forclarity.966
© Copyright Policy
Related In: Results  -  Collection

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

fig35: Nonpolar 95 and dipolar 96 altitudinalrotors mounted on an Au(111) surface. Note that rotor and flankingaryl rings are arbitrarily shown perpendicular to the surface forclarity.966
Mentions: Several examples of surface-mounted molecular rotors havebeenreported where motion could be driven by alternating electric fieldsor the absorption of pulses of light.952−962 Michl and co-workers synthesized, on the basis of computationalstudies, a series of surface-mounted rotors.963−965Figure 35 showsthe structure of polar and nonpolar versions of their altitudinalrotor. Polar rotor 96 consisted of a 9,10-dihydrophenanthrenesubstituted by four fluorine atoms on the central ring and had a calculateddipole moment of 3.7 D. The nonpolar rotor was a 4,5,9,10-tetrahydropyrenewhose D2 symmetry precluded a dipole moment.X-ray photoelectron spectroscopy (XPS), scanning tunneling microscopy(STM), and IR spectroscopy showed that for a fraction of the molecules,the static electric field from an STM tip induced a change in theorientation of the polar rotor, but not in the nonpolar analogue.966 Several molecular dynamics simulations studyingthe influence of an electric field or a fluid flow on the rotationof a molecule fixed on a surface have been published by the same group.967,968 One recent example simulated carborane-based molecular propellersand showed that they could be successfully driven at GHz rates byan oscillating electric field or by a flow of gas.969

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.