Let's Trist Again

  • Author: David Bradley
  • Published: 20 October 2013
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
  • Source / Publisher: Journal of the American Chemical Society/ACS Publications
  • Associated Societies: American Chemical Society (ACS), USA
thumbnail image: Let's Trist Again

Molecules that exhibit bistable physical states, which means they are capable of switching between two distinct states, show potential as elementary binary units for information storage. Transition metal complexes can display magnetic bistability by either spin-crossover or single-molecule magnet behavior.


An international team based in France and the USA and led by Jeffrey Long, University of California, Berkeley, CA, USA, have investigated the molecular salt [Fe(1-propyltetrazole)6](BF4)2, which exhibits magnetic tristability. The complex can switch between two states either by spin-crossover or single-molecule magnet behavior. When the complex was held in a magnetic field incident light reversibly flipped the molecular switch between one of three states.


The team suggest that this phenomenon might be exploited in ternary information storage systems that have the possibility of being 0,1, or 2 in value and so offering much higher information densities than bistable molecules that are either 0 or 1.


Article Views: 2565

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 ChemistryViews.org, please contact us first for permission. more

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