Literature DB >> 33490031

Fast Delayed Emission in New Pyridazine-Based Compounds.

Simonas Krotkus1, Tomas Matulaitis2, Stefan Diesing1,2, Graeme Copley2, Emily Archer1, Changmin Keum1, David B Cordes2, Alexandra M Z Slawin2, Malte C Gather1, Eli Zysman-Colman2, Ifor D W Samuel1.   

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 k RISC = 3.9 · 106 s-1 and fast thermally activated delayed fluorescence (TADF) with <500 ns delayed emission lifetime. Efficient triplet harvesting via the TADF mechanism is demonstrated in OLEDs using dPXZMePydz as the emitter but does not occur for compounds bearing weaker donor units.
Copyright © 2021 Krotkus, Matulaitis, Diesing, Copley, Archer, Keum, Cordes, Slawin, Gather, Zysman-Colman and Samuel.

Entities:  

Keywords:  donor-acceptor (D–A) architecture; organic light-emitting diode (OLED); pyridazine; reverse intersystem crossing (rISC); thermally activated delayed fluorescence (TADF)

Year:  2021        PMID： 33490031      PMCID： PMC7817954          DOI： 10.3389/fchem.2020.572862

Source DB:  PubMed          Journal:  Front Chem        ISSN： 2296-2646            Impact factor:   5.221


  24 in total

1.  Highly efficient organic light-emitting diodes from delayed fluorescence.

Authors:  Hiroki Uoyama; Kenichi Goushi; Katsuyuki Shizu; Hiroko Nomura; Chihaya Adachi
Journal:  Nature       Date:  2012-12-13       Impact factor: 49.962

2.  Photophysics of thermally activated delayed fluorescence molecules.

Authors:  Fernando B Dias; Thomas J Penfold; Andrew P Monkman
Journal:  Methods Appl Fluoresc       Date:  2017-03-09       Impact factor: 3.009

Review 3.  Thermally activated delayed fluorescence materials towards the breakthrough of organoelectronics.

Authors:  Ye Tao; Kai Yuan; Ting Chen; Peng Xu; Huanhuan Li; Runfeng Chen; Chao Zheng; Lei Zhang; Wei Huang
Journal:  Adv Mater       Date:  2014-09-17       Impact factor: 30.849

4.  Deep-Blue High-Efficiency TTA OLED Using Para- and Meta-Conjugated Cyanotriphenylbenzene and Carbazole Derivatives as Emitter and Host.

Authors:  Nadzeya A Kukhta; Tomas Matulaitis; Dmytro Volyniuk; Khrystyna Ivaniuk; Pavlo Turyk; Pavlo Stakhira; Juozas V Grazulevicius; Andrew P Monkman
Journal:  J Phys Chem Lett       Date:  2017-12-13       Impact factor: 6.475

Review 5.  Origin and Control of Orientation of Phosphorescent and TADF Dyes for High-Efficiency OLEDs.

Authors:  Kwon-Hyeon Kim; Jang-Joo Kim
Journal:  Adv Mater       Date:  2018-04-30       Impact factor: 30.849

6.  High-Efficiency Deep-Blue-Emitting Organic Light-Emitting Diodes Based on Iridium(III) Carbene Complexes.

Authors:  Amlan K Pal; Simonas Krotkus; Mattia Fontani; Campbell F R Mackenzie; David B Cordes; Alexandra M Z Slawin; Ifor D W Samuel; Eli Zysman-Colman
Journal:  Adv Mater       Date:  2018-10-15       Impact factor: 30.849

Review 7.  Carbon-carbon bonding made easy.

Authors:  Akira Suzuki
Journal:  Chem Commun (Camb)       Date:  2005-09-07       Impact factor: 6.222

8.  Novel oxacalix[2]arene[2]triazines with thermally activated delayed fluorescence and aggregation-induced emission properties.

Authors:  Yin-Feng Wang; Hai-Yan Lu; Yi-Fan Shen; Meng Li; Chuan-Feng Chen
Journal:  Chem Commun (Camb)       Date:  2019-08-07       Impact factor: 6.222

9.  The short device lifetimes of blue PhOLEDs: insights into the photostability of blue Ir(iii) complexes.

Authors:  Denis Jacquemin; Daniel Escudero
Journal:  Chem Sci       Date:  2017-09-26       Impact factor: 9.825

10.  Turn on of sky-blue thermally activated delayed fluorescence and circularly polarized luminescence (CPL) via increased torsion by a bulky carbazolophane donor.

Authors:  Nidhi Sharma; Eduard Spuling; Cornelia M Mattern; Wenbo Li; Olaf Fuhr; Youichi Tsuchiya; Chihaya Adachi; Stefan Bräse; Ifor D W Samuel; Eli Zysman-Colman
Journal:  Chem Sci       Date:  2019-05-29       Impact factor: 9.825
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