Fast Delayed Emission in New Pyridazine-Based Compounds

Authors :: Simonas Krotkus
Tomas Matulaitis
Stefan Diesing
Graeme Copley
Emily Archer
Changmin Keum
David B. Cordes
Alexandra M. Z. Slawin
Malte C. Gather
Eli Zysman-Colman
Ifor D. W. Samuel
Source :: Frontiers in Chemistry, Vol 8 (2021)
Publication Year :: 2021
Publisher :: Frontiers Media S.A., 2021.
Abstract: Three novel donor-acceptor molecules comprising the underexplored pyridazine (Pydz) acceptor moiety have been synthesized and their structural, electrochemical and photophysical properties thoroughly characterized. Combining Pydz with two phenoxazine donor units linked via a phenyl bridge in a meta configuration (dPXZMePydz) leads to high reverse intersystem crossing rate kRISC = 3.9 · 106 s−1 and fast thermally activated delayed fluorescence (TADF) with