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In this work, we investigate the optical and structural properties of the well-known triplet emitter bis(4′,6′-difluorophenylpyridinato)-iridium(III) picolinate (FIrpic), showing that its ability to pack in two different ordered crystal structures promotes attractive photophysical properties that are useful for solid-state lighting applications. This approach allows the detrimental effects of the nonradiative pathways on the luminescence performance in highly concentrated organic active materials to be weakened. The remarkable electro-optical behavior of sky-blue phosphorescent organic light-emitting diodes incorporating crystal domains of FIrpic, dispersed into an appropriate matrix as an active layer, has also been reported as well as the X-ray diffraction, nuclear magnetic resonance, electro-ionization mass spectrometry, and scanning electron microscopy analyses of the crystalline samples. We consider this result as a …
American Chemical Society
Publication date: 
5 Jul 2016

Antonio Maggiore, Marco Pugliese, Francesca Di Maria, Gianluca Accorsi, Massimo Gazzano, Eduardo Fabiano, Vittorianna Tasco, Marco Esposito, Massimo Cuscunà, Laura Blasi, Agostina Capodilupo, Giuseppe Ciccarella, Giuseppe Gigli, Vincenzo Maiorano

Biblio References: 
Volume: 55 Issue: 13 Pages: 6532-6538
Inorganic chemistry