ortho-, meta-, and para-Dihydroindenofluorene Derivatives as Host Materials for Phosphorescent OLEDs.

Maxime Romain (1) , Sébastien Thiery (1) , Anna Shirinskaya (2) , Céline Declairieux (2) , Denis Tondelier (2) , Bernard Geffroy (3, 2) , Olivier Jeannin (1) , Joëlle Rault-Berthelot (1) , Rémi Métivier (4) , Cyril Poriel (1)

1 ISCR - Institut des Sciences Chimiques de Rennes
2 LPICM - Laboratoire de physique des interfaces et des couches minces [Palaiseau]
3 LICSEN UMR 3685 - Laboratoire Innovation en Chimie des Surfaces et NanoSciences
4 PPSM - Laboratoire de Photophysique et Photochimie Supramoléculaires et Macromoléculaires

This work reports the first structure-properties relationship study of ortho [2,1-c]-, meta [1,2-a]-, and para [1,2-b]dihydroindenofluorenes, highlighting the influence of bridge rigidification on the electronic properties. This study has made it possible to devise an extended π-conjugated molecule with both a high triplet state energy level and excellent thermal and morphological stability. As a proof of concept, dihydroindenofluorenes were used as the host in sky-blue phosphorescent organic light-emitting diodes (PhOLEDs) with high performance.

Mots clés: organic semiconductors; dihydroindenofluorenes; LEDs

Domaines: Sciences du Vivant [q-bio]; Chimie

Maxime Romain, Sébastien Thiery, Anna Shirinskaya, Céline Declairieux, Denis Tondelier, et al.. ortho-, meta-, and para-Dihydroindenofluorene Derivatives as Host Materials for Phosphorescent OLEDs.. Angewandte Chemie International Edition, 2015, 54 (4), pp.1176-80. ⟨10.1002/anie.201409479⟩. ⟨hal-01117414⟩