Premium
Electrogenerated Chemiluminescence of Donor–Acceptor Molecules with Thermally Activated Delayed Fluorescence
Author(s) -
Ishimatsu Ryoichi,
Matsunami Shigeyuki,
Kasahara Takashi,
Mizuno Jun,
Edura Tomohiko,
Adachi Chihaya,
Nakano Koji,
Imato Toshihiko
Publication year - 2014
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201402615
Subject(s) - photochemistry , chemiluminescence , molecule , singlet state , quantum yield , fluorescence , chemistry , acceptor , photoluminescence , electrochemistry , electrochemiluminescence , electron donor , materials science , excited state , electrode , optoelectronics , atomic physics , catalysis , organic chemistry , optics , physics , condensed matter physics
The electrochemistry and electrogenerated chemiluminescence (ECL) of four kinds of electron donor–acceptor molecules exhibiting thermally activated delayed fluorescence (TADF) is presented. TADF molecules can harvest light energy from the lowest triplet state by spin up‐conversion to the lowest singlet state because of small energy gap between these states. Intense green to red ECL is emitted from the TADF molecules by applying a square‐wave voltage. Remarkably, it is shown that the efficiency of ECL from one of the TADF molecule could reach about 50 %, which is comparable to its photoluminescence quantum yield.