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Enhanced Electroluminescence Efficiency in a Spiro‐Acridine Derivative through Thermally Activated Delayed Fluorescence
Author(s) -
Méhes Gábor,
Nomura Hiroko,
Zhang Qisheng,
Nakagawa Tetsuya,
Adachi Chihaya
Publication year - 2012
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.201206289
Subject(s) - electroluminescence , oled , phosphorescence , acridine , fluorescence , exciton , derivative (finance) , photoluminescence , photochemistry , acceptor , singlet state , optoelectronics , phosphorescent organic light emitting diode , materials science , chemistry , nanotechnology , physics , optics , organic chemistry , atomic physics , excited state , layer (electronics) , quantum mechanics , condensed matter physics , financial economics , economics
Make your OLED fluorescent : An aromatic molecule based on a spiro‐acridine derivative was designed (see picture), and its photoluminescence and electroluminescence were characterized. By combining the donor and acceptor moieties a small energy gap between the lowest singlet and triplet states was achieved. This design leads to an organic light‐emitting diode (OLED) that rivals phosphorescent devices regarding exciton generation efficiency.