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ortho‐, meta‐ , and para ‐Dihydroindenofluorene Derivatives as Host Materials for Phosphorescent OLEDs
Author(s) -
Romain Maxime,
Thiery Sébastien,
Shirinskaya Anna,
Declairieux Céline,
Tondelier Denis,
Geffroy Bernard,
Jeannin Olivier,
RaultBerthelot Joëlle,
Métivier Rémi,
Poriel Cyril
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201409479
Subject(s) - phosphorescence , oled , materials science , molecule , host (biology) , thermal stability , diode , photochemistry , optoelectronics , chemistry , nanotechnology , physics , organic chemistry , optics , ecology , layer (electronics) , fluorescence , biology
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) w ith high performance.