Tim Silies, Nikos L. Doltsinis, Constantin G. Daniliuc, Fabio Rizzo
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Abstract
The Front Cover illustrates the improvement on stability as well as on thermally activated delayed fluorescence (TADF) characteristics, such as lifetime and efficiency, obtained by modifying the core of the organic emitters. The properties of TADF dyes are enhanced going from 9,9-dimethyl-fluorene to the more bulky 9,9’-spirobifluorene. Very long delayed fluorescence has been detected in both dyes as thin films and crystals, where the bulky core is pivotal to reduce deactivating intermolecular pathways. More information can be found in the Research Article by Fabio Rizzo and co-workers (DOI: 10.1002/cptc.202400235).
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