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Related Concept Videos

Ribozymes02:47

Ribozymes

The term ribozyme is used for RNA that can act as an enzyme. Ribozymes are mainly found in selected viruses, bacteria, plant organelles, and lower eukaryotes. Ribozymes were first discovered in 1982 when Tom Cech’s laboratory observed Group I introns acting as enzymes. This was shortly followed by the discovery of another ribozyme, Ribonulcease P, by Sid Altman’s laboratory. Both Cech and Altman received the Nobel Prize in chemistry in 1989 for their work on ribozymes.
Ribozymes can be...
Olefin Metathesis Polymerization: Overview01:13

Olefin Metathesis Polymerization: Overview

Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists of a...

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Related Experiment Video

Updated: Jul 5, 2026

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging
08:40

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging

Published on: March 13, 2019

Ruthenium-based light-driven molecular machine prototypes: synthesis and properties.

Sylvestre Bonnet1, Jean-Paul Collin

  • 1Laboratoire de Chimie Organo-Minérale, LC 3, UMR 7177 du CNRS, Université Louis Pasteur, Faculté de Chimie, 4 rue Blaise Pascal, 67070 Strasbourg Cedex, France.

Chemical Society Reviews
|May 24, 2008
PubMed
Summary

Researchers are developing light-activated molecular machines using ruthenium(II) complexes. These photochemically driven systems, including rotaxanes and catenanes, offer precise control for advanced applications.

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Area of Science:

  • Supramolecular Chemistry
  • Photochemistry
  • Coordination Chemistry

Background:

  • Dynamic systems, or molecular machines, are activated by external stimuli.
  • Photochemical reactions offer precise, rapid control over molecular motion.
  • Ruthenium(II) complexes are versatile components in designing molecular machines.

Purpose of the Study:

  • To review recent advances in the design and synthesis of ruthenium(II)-complexed molecular machines.
  • To highlight systems where photochemical expulsion of chelates drives motion.
  • To discuss the behavior of topologically complex and simple models.

Main Methods:

  • Synthesis of ruthenium(II)-complexed rotaxanes, catenanes, scorpionates, and macrocycles.
  • Photochemical activation via light irradiation to induce molecular motion.
  • Analysis of the behavior of topologically non-trivial and acyclic systems.

Main Results:

  • Demonstration of ruthenium(II) complexes enabling photochemically controlled molecular motion.
  • Successful synthesis of various molecular architectures, including rotaxanes and catenanes.
  • Characterization of the dynamic behavior of these light-responsive systems.

Conclusions:

  • Ruthenium(II) complexes are effective for creating light-driven molecular machines.
  • Photochemical control offers a powerful method for actuating complex molecular systems.
  • Further exploration of these systems can lead to novel applications in nanotechnology.