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Origami Inspired Self-assembly of Patterned and Reconfigurable Particles
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Cascading transformations within a dynamic self-assembled system.

Victoria E Campbell1, Xavier de Hatten, Nicolas Delsuc

  • 1Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.

Nature Chemistry
|July 24, 2010
PubMed
Summary
This summary is machine-generated.

This study demonstrates an abiological system that responds to signals by forming and breaking complex metal-ion assemblies. This showcases dynamic self-assembly and disassembly in response to chemical stimuli.

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Area of Science:

  • Supramolecular Chemistry
  • Coordination Chemistry
  • Chemical Systems Biology

Background:

  • Biomolecular signaling involves the transfer of molecular subcomponents, like phosphate groups, between molecules.
  • Complex signaling cascades dictate the dynamics of biological machinery.
  • Abiologial systems can mimic biological complexity through self-assembly.

Purpose of the Study:

  • To investigate the complex responses of an abiological system to simple chemical signals.
  • To demonstrate dynamic self-assembly and disassembly of metal-ion coordination complexes.
  • To explore how perturbations drive systems towards thermodynamic equilibrium.

Main Methods:

  • Utilized metal-ion coordination to create an abiological system from organic subcomponents.
  • Introduced zinc(II) to a Copper(I)(3) helicate, inducing transformation and copper(I) release.
  • Added 8-aminoquinoline to trigger the formation of a more stable Copper(I)(3) helicate.

Main Results:

  • A Copper(I)(3) helicate transformed into a Zinc(II)(2)Copper(I) analogue upon addition of zinc(II).
  • Ejected copper(I) self-assembled a Copper(I)(2) helicate from free subcomponents.
  • Formation of a stable Copper(I)(3) helicate required the destruction of pre-existing helicates to scavenge copper(I).

Conclusions:

  • The abiological system exhibits complex responses to simple signals through dynamic assembly and disassembly.
  • The system demonstrates two distinct responses to a single signal, involving creation and destruction of assemblies.
  • Perturbations drive the system towards thermodynamic equilibrium, showcasing adaptive behavior.