Salt Regulated Fluorescence Switching

  • Author: ChemViews
  • Published Date: 27 April 2011
  • Source / Publisher: European Journal of Organic Chemistry/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
thumbnail image: Salt Regulated Fluorescence Switching

Related Societies

Inorganic anions have recently been gaining increasing attention due to their pivotal roles in biology, medicine and the environment. Chemosensors that selectively sense and respond to inorganic anions have consequently gained interest. In particular, the monitoring of fluoride ions is of interest due to their toxicity.


Chang-Hee Lee and co-workers, Kangwon National University, Korea, have developed a F sensor that displays a sensitive “Turn-On” fluorescence in the presence of fluoride anions. The sensor is based on calix[4]pyrrole and forms a complex with F that results in fluorescence. The fluoride ion can be displaced by Li+, resulting in quenching of the fluorescence and turning the indicator off. The “Off-On” switching was completely reversible and could be repeated many times.

This is the first sensor that turns on in the presence of F and could additionally present a model for a fluorescence-based logic system.


Article Views: 3578

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