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An article from Jaume Veciana and Paula Mayorga highlighted in Chemistry Views

An article from Jaume Veciana and Paula Mayorga highlighted in Chemistry Views

News Websites 04 November 2019 251 hits Anna May Masnou
One manuscript from Jaume Veciana and Paula Mayorga and coworkers has been chosen to be highlighted on the ChemistryViews newsletter. The manuscript chosen is "Organic Free Radicals as Circularly Polarized Luminescence Emitters", published in Angewandte Chemie International Edition, and is about the intrinsic chiral emission of enantiometric organic free radicals. 

thumbnail image: Circularly Polarized Light from Organic RadicalsThe short news about the paper is entitled "Circulary Polarized Light from Organic Radicals" is available here

Circularly polarized luminescence (CPL) can occur when a luminescent compound has a chiral structure. Organometallic structures are leading in CPL activity. However, purely organic CPL emitters are promising alternatives in several applications where low toxicity is important (i.e., bioimaging).

Jaume Veciana (Institut de Ciéncia de Materials de Barcelona (ICMAB), Spain), Araceli G. Campaña (University of Granada, Spain) and colleagues have found a new approach for the optimization of organic emitters with intrinsic chirality. In particular, tris(2,4,6-trichlorophenyl)methyl (TTM) and perchlorotriphenylmethyl (PTM) radicals, which both have a chiral propeller-like shape, were used. In addition to their chirality, these materials are magnetically active. They are also easy to modify in order to optimize their properties.

The team separated the two racemic compounds into their enantiomers using chiral stationary phase high-performance liquid chromatography (HPLC). The CPL spectra of the four resulting fractions (examples pictured) were recorded and the researchers found highly efficient chiral emission for both pairs of enantiomers. According to the researchers, this is the first time results about the intrinsic chiral emission from enantiomeric organic free radicals have been reported. The work might be a starting point for the development of improved chiral organic radical emitters.

To know more about it, visit ChemistryViews, or read the full article here!

Reference article:

Organic Free Radicals as Circularly Polarized Luminescence Emitters
Paula Mayorga Burrezo, Vicente G. Jiménez, Davide Blasi, Imma Ratera, Araceli G. Campaña, Jaume Veciana,
Angew. Chem. Int. Ed. 2019.
https://doi.org/10.1002/anie.201909398

About ChemistryViews:

ChemistryViews is a free online service published for chemists and other scientists by ChemPubSoc Europe, an organization of 16 European societies. It offers daily news on the latest research, as well as other related information (awards, nominations, events calendar, interviews, research highlights, etc.). 

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