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

Romain, M; Thiery, S; Shirinskaya, A; Declairieux, C; Tondelier, D; Geffroy, B; Jeannin, O; Rault-Berthelot, J; Metivier, R; Poriel, C ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 2015, 54, 1176-1180.

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 -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.

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Publication

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Paru le 19 janvier 2015

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DOI: 10.1002/anie.201409479