Results 11 to 20 of about 1,915,191 (239)

A simplified approach to thermally activated delayed fluorescence (TADF) bipolar host polymers [PDF]

open access: yesPolymer Chemistry, 2022
Herein, we compare a series of solution-processible TADF polymers with different host pendant groups to achieve balanced charge transport properties through the combination of unipolar co-hosts.
Susanna V. Kunz   +11 more
openaire   +6 more sources

Open questions on the photophysics of thermally activated delayed fluorescence

open access: yesCommunications Chemistry, 2021
The process of thermally activated delayed fluorescence (TADF) converts non-radiative triplet states into emissive singlet states. Herein we outline the fundamentals of TADF, some of the recent progress in understanding the key material properties ...
Julien Eng, Thomas J. Penfold
doaj   +2 more sources

Intramolecular Noncovalent Interactions Facilitate Thermally Activated Delayed Fluorescence (TADF)

open access: yesThe Journal of Physical Chemistry Letters, 2019
In the conventional molecular design of thermally activated delayed fluorescence (TADF) organic emitters, simultaneously achieving a fast rate of reverse intersystem crossing (RISC) from the triplet to the singlet manifold and a fast rate of radiative decay is a challenging task.
Xian-Kai Chen   +6 more
openaire   +4 more sources

Evaluating Multi-Resonant Thermally Activated Delayed (MR-TADF) Fluorescent Compounds as Photocatalysts [PDF]

open access: yes, 2022
Donor-acceptor (D-A) thermally activated delayed fluorescent (TADF) compounds, such as 4CzIPN, have become a widely used sub-class of organic photocatalysts for a plethora of photocatalytic reactions. Multi-resonant TADF (MR-TADF) compounds, a subclass of TADF emitters that are rigid nanographene derivatives, such as DiKTa and Mes3DiKTa, have to date ...
Callum Prentice   +3 more
openaire   +3 more sources

Boron-based donor-spiro-acceptor compounds exhibiting thermally activated delayed fluorescence (TADF) [PDF]

open access: yesDalton Transactions, 2018
We present highly luminescent borylated 2-phenylpyridines, which exhibit tunable delayed fluorescence due to their donor-spiro-acceptor architecture.
Marco Stanoppi, Andreas Lorbach
openaire   +4 more sources

Molecular asymmetry and rigidification as strategies to activate and enhance thermally activated delayed fluorescence in deep-blue MR-TADF emitters [PDF]

open access: yesPhysical Chemistry Chemical Physics
Two novel deep-blue multi-resonant thermally activate delayed fluorescnece (MR-TADF) emitters, 1B-CzCrs and 2B-CzCrs, containing a a fused carbazole unit were synthesized. The carbazole contributed to the emergence of TADF in these small molecules. Particularly, organic light-emitting diodes with 1B-CzCrs doped in mCP host achieve a maximum external ...
Rangani Wathsala Weerasinghe   +9 more
core   +9 more sources

Employing organic donor-acceptor thermally activated delayed fluorescence (TADF) compounds as photocatalysts [PDF]

open access: yes
This thesis aims to expand the range of donor-acceptor (D-A) thermally activated delayed fluorescence (TADF) compounds trialled as photocatalysts (PCs), as well as increasing mechanistic understanding of photocatalytic processes. Chapter 1 describes the fundamental photophysical and photochemical processes that underpins the reactivity of the PC.
Bryden, Megan Amy
openaire   +3 more sources

Photoactivation-Enabled Tunable Room-Temperature Phosphorescence and Thermally Activated Delayed Fluorescence in Crystalline Materials. [PDF]

open access: yesAdv Sci (Weinh)
This work is the first to demonstrate the regulation of photoactivated room‐temperature phosphorescence (RTP) and thermally activated delayed fluorescence (TADF) in crystalline materials without any pretreatment. Furthermore, we reveal the underlying mechanisms by uncovering the role of host‐guest energy level alignment, exciton lifetime, crystallinity,
Zhang L   +5 more
europepmc   +2 more sources

Palladium Catalyzed C3-(sp2)-H Alkenylation of Pyrroles: A Direct Access to Novel Organic Thermally Activated Delayed Fluorescence (TADF) Materials [PDF]

open access: yes, 2023
A Pd (II)-catalyzed direct C3-(sp2)-H alkenylation of heteroarenes using benzothiazole as a directing group has been successfully achieved. A wide range of 2-N-alkylpyrroles undergo an oxidative coupling with a variety of acrylates to furnish highly ...
Anindita , Bhowmick   +4 more
core   +2 more sources

High efficiency blue organic light-emitting diodes with below-bandgap electroluminescence

open access: yesNature Communications, 2021
Thermally activated delayed fluorescence organic light-emitting diodes (TADF-OLEDs) rely on high triplet energy interlayers to confine excitons, which results in reduced performance.
Maria Vasilopoulou   +17 more
doaj   +1 more source

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