Daisy-Chains and Hydrogels

  • Author: David Bradley
  • Published: 23 December 2011
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
  • Source / Publisher: Chemical Communications/RSC Publishing
thumbnail image: Daisy-Chains and Hydrogels

Researchers at Northwestern University, USA, and KAIST, South Korea, looked at the properties of a synthetic, cylindrical macrocycle composed of five hydroquinone rings linked through its para positions by methylene bridges. They modified one such monofunctionalised pillar[5]arene by adding a viologen side-chain and watched its self-complexation in dilute dichloromethane.

At low concentration, supramolecular daisy-chain polymers form, but these become gels at higher concentration. The team is currently investigating the switching behavior of this material.

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