Alternating Polymer Sorts Itself

  • Author: Vikki Cantrill
  • Published: 29 January 2015
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
  • Source / Publisher: Chemical Communications/Royal Society of Chemistry
  • Associated Societies: Royal Society of Chemistry (RSC), UK
thumbnail image: Alternating Polymer Sorts Itself

Self-sorting processes occur frequently in nature. The formation of the double helix of DNA arises from the ability of its component nucleic acid bases to correctly self-assemble. There are artificial systems that exploit self-sorting behaviors by means of hydrogen bonding, π-π and host-guest interactions, to name a few. However, there are only a few examples of complex polymers made in this way.

Chuan-Feng Chen and colleagues, Chinese Academy of Sciences, Beijing, China, have developed a method to produce an alternating copolymer – a polymer in which two host building blocks, A and B, alternate systematically. Each host selectively recognizes two guest molecules (X or Y). Once X and Y are tethered, a linear alternating polymer … AX–YBY–XA … results. The building blocks use crown-ether derivatives and the hosts dibenzylammonium and (9-anthracylmethyl)-benzylammonium moieties for recognition. Mixing all of the components led directly to the alternating copolymer.

At high concentrations fibers could be drawn from the viscous copolymer product and analyzed. These fibers, which are made up from entangled chains, were found to have a regular diameter of 11 μm.


Article Views: 2987

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

If you would like to reuse any content, in print or online, from, please contact us first for permission and consult our permission guidance prior to making your request

Follow on Facebook Follow on Twitter Follow on YouTube Follow on LinkedIn Follow on Instagram RSS Sign up for newsletters

Magazine of Chemistry Europe (16 European Chemical Societies) published by Wiley-VCH