Journal ArticleDOI
Dual intramolecular charge-transfer fluorescence derived from a phenothiazine-triphenyltriazine derivative
TLDR
In this article, a material containing a phenothiazine (PTZ) electron donor unit and 2,4,6-triphenyl-1,3,5-triazine (TRZ) acceptor unit, PTZ-TRZ, which exhibits thermally activated delayed fluorescence (TADF) was developed.Abstract:
A material containing a phenothiazine (PTZ) electron donor unit and 2,4,6-triphenyl-1,3,5-triazine (TRZ) electron acceptor unit, PTZ-TRZ, which exhibits thermally activated delayed fluorescence (TADF) was developed. Density functional theory calculations revealed the existence of two ground-state conformers with different energy gaps between the lowest singlet excited state and lowest triplet excited state (1.14 and 0.18 eV), which resulted from the distortion of PTZ, as confirmed by X-ray structure analysis. PTZ-TRZ in toluene solution showed two broad, structureless emissions, confirming the existence of two different excited states. From detailed analyses of the absorption and photoluminescence spectra, we determined that both emissions were intramolecular charge-transfer (ICT) fluorescence. Therefore, the excited-state conformers of PTZ-TRZ resulted in dual ICT fluorescence. Because previously reported dual fluorescence from single molecules involves locally excited and ICT fluorescence, the dual ICT ...read more
Citations
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Journal ArticleDOI
Recent advances in organic thermally activated delayed fluorescence materials.
Zhiyong Yang,Zhu Mao,Zongliang Xie,Yi Zhang,Siwei Liu,Juan Zhao,Jiarui Xu,Zhenguo Chi,Matthew P. Aldred +8 more
TL;DR: This review summarizes and discusses the latest progress concerning this rapidly developing research field, in which the majority of the reported TADF systems are discussed, along with their derived structure-property relationships, TadF mechanisms and applications.
Journal ArticleDOI
Purely Organic Thermally Activated Delayed Fluorescence Materials for Organic Light-Emitting Diodes.
TL;DR: A comprehensive review of TADF materials is presented, with a focus on linking their optoelectronic behavior with the performance of the organic light-emitting diode (OLED) and related EL devices.
Journal ArticleDOI
Molecular Design Strategy of Organic Thermally Activated Delayed Fluorescence Emitters
TL;DR: In this article, the authors reviewed molecular design strategies of organic-based TADF emitters by classifying them into several categories depending on the material parameters required for the TADFs.
Journal ArticleDOI
White‐Light Emission Strategy of a Single Organic Compound with Aggregation‐Induced Emission and Delayed Fluorescence Properties
TL;DR: By purposefully selecting the two parent molecules, that is, O2C (blue) and O2P (yellow), the white-light emission of OPC can be achieved in a single molecule, providing a feasible molecular strategy to design new AIE-DF white- light-emitting organic molecules.
Journal ArticleDOI
Thermally Activated Delayed Fluorescence and Aggregation Induced Emission with Through-Space Charge Transfer.
Hiroyuki Tsujimoto,Dong-Gwang Ha,Georgios Markopoulos,Hyun Sik Chae,Marc A. Baldo,Timothy M. Swager +5 more
TL;DR: Crystal structures revealed π-π intramolecular interactions between a donor and an acceptor, however, the dominant intermolescular interactions were C-H···π, which likely restrict the molecular dynamics to create aggregation-induced enhanced emission.
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