Results 51 to 60 of about 4,758 (226)

Rational design of dibenzo[a,c]phenazine-derived isomeric thermally activated delayed fluorescence luminophores for efficient orange-red organic light-emitting diodes [PDF]

open access: yes, 2023
It is an immense challenge to develop efficient long-wavelength (orange-to-red) thermally activated delayed fluorescence (TADF) materials due to the increasing nonradiative decay rates following the energy-gap law. Herein, two pairs of asymmetric isomers;
Li, Feiyun   +7 more
core   +1 more source

Thermally Activated Delayed Fluorescence Materials Based on Homoconjugation Effect of Donor–Acceptor Triptycenes [PDF]

open access: yes, 2015
Donor–acceptor triptycences, TPA-QNX(CN)2 and TPA-PRZ(CN)2, were synthesized and their emissive properties were studied. They exhibited a blue-green fluorescence with emission lifetimes on the order of a microsecond in cyclohexane at room temperature ...
Baldo, Marc A   +6 more
core   +3 more sources

The contributions of molecular vibrations and higher triplet levels to the intersystem crossing mechanism in metal-free organic emitters. [PDF]

open access: yes, 2017
Intense, simultaneous, room temperature phosphorescence (RTP) and thermally activated delayed fluorescence (TADF) is observed in a series of donor-acceptor-donor (D–A–D) molecules.
Huang, Rongjuan   +13 more
core   +3 more sources

Vibrational Damping Reveals Vibronic Coupling in Thermally Activated Delayed Fluorescence Materials. [PDF]

open access: yes, 2021
We investigate a series of D-A molecules consisting of spiro[acridan-9,9'-fluorene] as the donor and 2-phenylenepyrimidine as the acceptor. In two of the materials, a spiro center effectively electronically isolates the D unit from (consequently ...
Batsanov, AS   +6 more
core   +1 more source

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

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   +1 more source

Inverting Singlet and Triplet Excited States using Strong Light-Matter Coupling

open access: yes, 2019
In organic microcavities, hybrid light-matter states can form with energies that differ from the bare molecular excitation energies by nearly 1 eV. A timely question, given recent advances in the development of thermally activated delayed fluorescence ...
Eizner, Elad   +3 more
core   +1 more source

Shorter Exciton Lifetimes via an External Heavy-Atom Effect: Alleviating the Effects of Bimolecular Processes in Organic Light-Emitting Diodes [PDF]

open access: yes, 2017
Multiexcited‐state phenomena are believed to be the root cause of two exigent challenges in organic light‐emitting diodes; namely, efficiency roll‐off and degradation.
Baldo, Marc A   +6 more
core   +1 more source

A novel class of photoinitiators with a thermally activated delayed fluorescence (TADF) property [PDF]

open access: yesNew Journal of Chemistry, 2018
Photoinitiators exhibiting efficient thermally activated delayed fluorescence (TADF) are investigated.
Bouzrati-Zerelli, Mariem   +10 more
openaire   +2 more sources

Recent advances in polymer organic light-emitting diode (PLED) using non-conjugated polymers as the emitting layer and contrasting them with conjugated counterparts [PDF]

open access: yes, 2017
Polymer organic light-emitting diode (PLED) is one of the most studied subjects in flexible electronics thanks to their economical wet fabrication procedure for enhanced price advantage of the product device.
Wong, Michael Y.
core   +2 more sources

A review of fused-ring carbazole derivatives as emitter and/or host materials in organic light emitting diode (OLED) applications [PDF]

open access: yes, 2023
This review focuses on fused-ring carbazole derivatives, their molecular design, electronic and photophysical properties, and in particular their applications as the emitter and/or the host material in the emitting layer of organic light emitting diodes (
Bryce, Martin R., Oner, Saliha
core   +2 more sources

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