Design and synthesis of new circularly polarized thermally activated delayed fluorescence emitters

Sophie Feuillastre (1, 2, 3) , Mathilde Pauton (1) , Longhui Gao (1) , Alaric Desmarchelier (1) , Adrian J. Riives (4) , Damien Prim (5) , Denis Tondelier (6) , Bernard Geffroy (6, 7) , Gilles Muller (4) , Gilles Clavier (8) , Grégory Pieters (1)

1 SCBM - Service de Chimie Bio-Organique et de Marquage
2 MTS - Médicaments et Technologies pour la Santé
3 LMT2 - LMT équipe 2
4 Department of Chemistry, San José State University
5 ILV - Institut Lavoisier de Versailles
6 LPICM - Laboratoire de physique des interfaces et des couches minces [Palaiseau]
7 LICSEN UMR 3685 - Laboratoire Innovation en Chimie des Surfaces et NanoSciences
8 PPSM - Laboratoire de Photophysique et Photochimie Supramoléculaires et Macromoléculaires

This work describes the first thermally activated delayed fluorescence material enabling circularly polarized light emission through chiral perturbation. These new molecular architectures obtained through a scalable one-pot sequential synthetic procedure at room temperature (83% yield) display high quantum yield (up to 74%) and circularly polarized luminescence with an absolute luminescence dissymmetry factor, |$g_{lum}$|, of 1.3 × 10$^{−3}$. These chiral molecules have been used as an emissive dopant in an organic light emitting diode exhibiting external quantum efficiency as high as 9.1%.

Domaines: Matériaux

Sophie Feuillastre, Mathilde Pauton, Longhui Gao, Alaric Desmarchelier, Adrian J. Riives, et al.. Design and synthesis of new circularly polarized thermally activated delayed fluorescence emitters. Journal of the American Chemical Society, 2016, 138, pp.3990-3993. ⟨10.1021/jacs.6b00850⟩. ⟨cea-01295446⟩