Tuning the Luminescence of a Ruthenium Complex with Peptoids

  • ChemPubSoc Europe Logo
  • Author: Chemistry – A European Journal
  • Published Date: 24 July 2019
  • Source / Publisher: Chemistry – A European Journal/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
thumbnail image: Tuning the Luminescence of a Ruthenium Complex with Peptoids

Related Societies

Peptoids. i.e., oligomers of N-substituted glycine, are peptidomimetic molecules. Like proteins, they can fold into specific secondary structures guided by their sequence. However, using a peptoid's structure to control its function can be challenging.


Galia Maayan and colleagues, Technion–Israel Institute of Technology, Haifa, have investigated one such relationship between structure and function: They found a direct correlation between the structure of short peptoid ligands and the photoluminescence of RuII ions coordinated by these ligands.


The team attached bipyridine (bipy) groups to a variety of peptoid oligomers, differing in sequence and structure. These peptoids were used to form photoluminescent ruthenium metal complexes (with three ligands per metal). The secondary structure of each peptoid-complex was characterized by circular dichroism (CD) spectroscopy and its photoluminescence was measured.


The researchers found that the photoluminescence of the bipy-ruthenium complexes embedded within helical peptoids (pictured left) is retained. In contrast, the emission of non-helical ruthenium peptoid complexes (pictured right) is quenched. It is possible to fine-tune the luminescence of the complex by modulating the structure of the peptoid, i.e., by altering its monomer sequence. This unique structure-function correlation has potential applications in sensing and photocatalysis.

 


 

Article Views: 578

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