Start Over

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
EPSRC
European Commission
University of St Andrews. Organic Semiconductor Centre
University of St Andrews. School of Chemistry
University of St Andrews. School of Physics and Astronomy
University of St Andrews. EaSTCHEM
University of St Andrews. Sir James Mackenzie Institute for Early Diagnosis
University of St Andrews. Centre for Biophotonics
University of St Andrews. Biomedical Sciences Research Complex
University of St Andrews. Condensed Matter Physics
Source :: Frontiers in Chemistry, Vol 8 (2021), Frontiers in Chemistry
Publication Year :: 2021
Publisher :: Frontiers Media S.A., 2021.
Abstract: We thank the EPSRC for financial support (grants EP/P010482/1 and EP/R035164/1). We thank the EPSRC UK National Mass Spectrometry Facility at Swansea University for analytical services. G.C. acknowledges funding by the European Commission through a Marie Skłodowska Individual Fellowship (No. 799302). C.K. acknowledges support from the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2017R1A6A3A03012331). 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