Enhancing thermally activated delayed fluorescence characteristics by intramolecular B–N coordination in a phenylpyridine-containing donor–acceptor π-system

2017 ◽  
Vol 53 (62) ◽  
pp. 8723-8726 ◽  
Author(s):  
Kyohei Matsuo ◽  
Takuma Yasuda
Keyword(s):  
Delayed Fluorescence ◽  
Fluorescence Properties ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
System P ◽  
Fluorescence Characteristics ◽  
Donor Acceptor ◽  
The Impact

The impact of intramolecular B–N coordination on the photophysical and thermally activated delayed fluorescence properties was investigated.

The Second-Order NLO and TADF Properties of Donor−Acceptor Dihydropyrene – Cyclophanediene System: the Impact of Molecular Architectures and Polarizable Environment

2021 ◽  
Author(s):  
yao Yao ◽  
Hongliang Xu ◽  
Zhong-Min Su
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Delayed Fluorescence ◽  
Second Order ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Donor Acceptor ◽  
Molecular Architectures ◽  
The Impact

The electro-optical properties (nonlinear optical (NLO) and thermally activated delayed fluorescence (TADF) properties) of negative T-type dihydropyrene (DHP)-cyclophanediene (CPD) photoswitch were studied systematically in this work. An interesting “seesaw” phenomenon...

Frustrated Lewis pairs with thermally activated delayed fluorescence properties: activation of formaldehyde

2020 ◽  
Vol 49 (38) ◽  
pp. 13198-13201
Author(s):  
Young Hoon Lee ◽  
Eun Bi Nam ◽  
Junseong Lee ◽  
Sang Uck Lee ◽  
Min Hyung Lee
Keyword(s):  
Delayed Fluorescence ◽  
Fluorescence Properties ◽  
Frustrated Lewis Pairs ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Donor Acceptor ◽  
Lewis Pairs

Activation of formaldehyde (FA) by frustrated Lewis pairs (FLPs) consisting of bulky phosphines with a donor–acceptor unit and B(C6F5)3 led to the formation of FLP–FA adducts that exhibit a thermally activated delayed fluorescence.

Donor–acceptor materials exhibiting deep blue emission and thermally activated delayed fluorescence with tris(triazolo)triazine

2021 ◽  
Author(s):  
Ryoga Hojo ◽  
Don M. Mayder ◽  
Zachary M. Hudson
Keyword(s):  
Blue Emission ◽  
Delayed Fluorescence ◽  
Fluorescence Properties ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Two Photon ◽  
Deep Blue ◽  
Donor Acceptor ◽  
Two Photon Fluorescence ◽  
Photon Fluorescence

Five emitters with the tris(triazolo)triazine acceptor core are reported, with emission from deep blue to green. These emitters show promising thermally activated delayed fluorescence and/or two-photon fluorescence properties.

Novel thermally activated delayed fluorescence materials by high-throughput virtual screening: going beyond donor–acceptor design

2021 ◽  
Vol 9 (9) ◽  
pp. 3324-3333 ◽  
Author(s):  
Ke Zhao ◽  
Ömer H. Omar ◽  
Tahereh Nematiaram ◽  
Daniele Padula ◽  
Alessandro Troisi
Keyword(s):  
Virtual Screening ◽  
Quantum Chemistry ◽  
High Throughput ◽  
Delayed Fluorescence ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Quantum Chemistry Calculations ◽  
Donor Acceptor ◽  
Molecular Semiconductors ◽  
High Throughput Virtual Screening

125 potential TADF candidates are identified through quantum chemistry calculations of 700 molecules derived from a database of 40 000 molecular semiconductors. Most of them are new and some do not belong to the class of donor–acceptor molecules.

scholarly journals Regioisomeric Effect on the Excited-State Fate Leading to Room-Temperature Phosphorescence or Thermally Activated Delayed Fluorescence in a Dibenzophenazine-Cored Donor–Acceptor–Donor System

2021 ◽  
Author(s):  
Takumi Hosono ◽  
Nicolas Oliveira Decarli ◽  
Paola Zimmermann Crocomo ◽  
Tsuyoshi Goya ◽  
Leonardo Evaristo de Sousa ◽  
...  
Keyword(s):  
Excited State ◽  
Room Temperature ◽  
Delayed Fluorescence ◽  
Quantum Yields ◽  
Room Temperature Phosphorescence ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Donor Acceptor ◽  
Emission Behavior

Exploring design principle for switching thermally activated dealyed fluorescecne (TADF) and room temperature phosphorescence (RTP) is a fundamentally imporant research in developing triplet-mediated photofunctional organic materials. Herein systematic studies on the regioisomeric and substituents effects in a twisted donor–acceptor–donor (D–A–D) scaffold (A = dibenzo[a,j]phenazine; D = dihydrophenazasiline) on the fate of the excited state have been performed. The study revealed that the regiosiomerism clearly affects the emission behavior of the D–A–D compounds. Distinct difference in TADF, dual TADF & RTP, and dual RTP were observed, depending on the host used. Furthermore, OLED organic light-emitting diodes (OLEDs) fabricated with the developed emitters achieved high external quantum yields for RTP-based OLEDS up to 7.4%.

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