sp3-Carbon-Based Liquid Crystals

  • ChemPubSoc Europe Logo
  • Author: Rachel McGlue
  • Published Date: 28 July 2013
  • Source / Publisher: Chemistry – A European Journal/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
thumbnail image: sp<sup>3</sup>-Carbon-Based Liquid Crystals

Related Societies

The supramolecular assembly of synthetic macromolecules into complex helical aggregates drastically alters their properties, potentially providing new classes of material with unique functionality caused by the "tertiary structure". Synthetic helical assemblies of macromolecules could play a role in the development of liquid-crystalline polymers (LCPs), which have important potential applications, for example, in organic photovoltaic materials and as actuators. LCPs generally contain segments of sp2-hybridized carbon atoms to provide sufficient rigidity to the macromolecular chains to form a liquid-crystalline phase. This rigidity can also be induced by formation of helical assemblies that lock the polymer chains in a specific, rigid conformation, thus allowing the formation of LCPs from sp3-carbon-based polymers; however, few examples have been reported.


Bas de Bruin and co-workers, Universiteit van Amsterdam, the Netherlands, have described the self-assembly of syndiotactic polycarbene polymers of poly(ethylidene acetate) (st-PEA) into van der Waals stabilized LC aggregates. The formation of these LC aggregates from such flexible sp3-carbon-backbone synthetic polymers is unexpected. A combination of experimental and molecular-mechanics-based molecular dynamics studies reveals that this surprising behavior is due to self-aggregation of st-PEA into triple-helix aggregates.
This finding demonstrates the importance of the "tertiary structure" of synthetic polymers to their material properties.


Article Views: 3163

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

Bookmark and Share

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH