Molecular machines: Nanomotor rotates microscale objects

  title={Molecular machines: Nanomotor rotates microscale objects},
  author={Rienk Eelkema and Michael M. Pollard and Javier Vicario and Nathalie Katsonis and Blanca Serrano Ramon and Cees W. M. Bastiaansen and Dick Jan Broer and Ben L. Feringa},
Nanomachines of the future will require molecular-scale motors that can perform work and collectively induce controlled motion of much larger objects. We have designed a synthetic, light-driven molecular motor that is embedded in a liquid-crystal film and can rotate objects placed on the film that exceed the size of the motor molecule by a factor of 10,000. The changes in shape of the motor during the rotary steps cause a remarkable rotational reorganization of the liquid-crystal film and its… Expand

Figures and Topics from this paper

Braking of a Light-Driven Molecular Rotary Motor by Chemical Stimuli.
It is reported that the rotary speed of a molecular motor, functionalized with a biphenol moiety, could be decreased in situ by non-covalent substrate binding, as was established by 1 H NMR and UV/Vis spectroscopy. Expand
Artificial molecular motors.
This work focuses on the control of directional movement, both at the molecular scale and at larger magnitudes, and identifies some key challenges remaining in the field. Expand
Artificial molecular rotors and motors on surfaces: STM reveals and triggers
Inspired by the biomolecular motors that can be found everywhere in nature and are essential to numerous processes of life, nanoscientists have been developing artificial molecular rotors and motorsExpand
Biological and biomimetic molecular machines.
Inspired by nature, researchers are creating artifical molecular machines with tailored structures and properties, with the aim of realizing man-made active nanosystems that operate with the same efficiency and complexity as biological nanomachines. Expand
Motor Proteins at Work for Nanotechnology
The progress that has been made in using motor proteins for powering or manipulating nanoscale components, including kinesin and myosin biomotors that move along linear biofilaments, are reviewed. Expand
Photochemically Controlled Molecular Machines with Sequential Logic Operation
A molecular machine is an assembly of molecular components (i.e., a supramolecular structure) designed to perform specific mechanical movements in response to external stimuli. Biomolecular machinesExpand
Putting Nanoparticles to Work: Self-propelled Inorganic Micro- and Nanomotors
The development of nanomotors (nano- and micron sized particles that convert energy into mechanical movement) is an exciting endeavor. Nanomotors have been crafted in an extensive variety of sizes,Expand
Light-induced crawling of crystals on a glass surface
The directional and continuous motion of crystals on a glass surface when irradiated simultaneously with two different wavelengths, using simple azobenzenes as a photoresponsive organic compound is reported, leading to remote-controlled micrometre-sized vehicles and valves on solid substrates. Expand
Progress through Mechanics: Artificial Molecular Machines
Human bodies have many molecular motors and machines [1]. In these biomotors, nature demonstrates most elegantly that simple molecular mechanical components, once organized and assembled in a preciseExpand
Synthesis of single-molecule nanocars.
  • G. Vives, J. Tour
  • Computer Science, Medicine
  • Accounts of chemical research
  • 2009
The synthesis of a class of molecular machines that resemble macroscopic vehicles that resemble nanocars is described, designed for study at the single-molecule level by scanning probe microscopy (SPM). Expand


Light-driven monodirectional molecular rotor
Attempts to fabricate mechanical devices on the molecular level have yielded analogues of rotors, gears, switches, shuttles, turnstiles and ratchets. Molecular motors, however, have not yet beenExpand
Unidirectional rotation in a mechanically interlocked molecular rotor
It is shown that sequential and unidirectional rotation can also be induced in mechanically interlocked assemblies comprised of one or two small rings moving around one larger ring. Expand
Unidirectional rotary motion in a molecular system
A molecule is described that uses chemical energy to activate and bias a thermally induced isomerization reaction, and thereby achieve unidirectional intramolecular rotary motion. Expand
Linear artificial molecular muscles.
Two switchable, palindromically constituted bistable [3]rotaxanes have been designed and synthesized with a pair of mechanically mobile rings encircling a single dumbbell, supporting the hypothesis that the cumulative nanoscale movements within surface-bound molecular muscles can be harnessed to perform larger-scale mechanical work. Expand
Textures of liquid crystals
Preface.Foreword. 1. Introduction.2. Surface Anchoring and Elasticity.3. Polarizing Microscopy.4. The Blue Phases.5. The Nematic and Cholesteric Phases.6. Twist Grain Boundary Phases.7. The FluidExpand