Mechanochromic luminescent materials of bimetallic Cu(i) complexes showing thermally activated delayed fluorescence

2020 ◽  
Vol 8 (45) ◽  
pp. 16160-16167
Author(s):  
Xing-Wei Chen ◽  
Li-Hua He ◽  
Peng Ju ◽  
Jing-Lin Chen ◽  
Sui-Jun Liu ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Delayed Fluorescence ◽  
Luminescent Materials ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Luminescence Color

Reversible mechanochromism is related to the breaking and restoring of hydrogen-bonding and luminescence color is tunable via the substituent.

Benzothienopyrimidine as a co-planar type rigid acceptor for high external quantum efficiency in thermally activated delayed fluorescence emitters

2019 ◽  
Vol 7 (25) ◽  
pp. 7643-7653 ◽  
Author(s):  
Chan Seok Oh ◽  
Ha Lim Lee ◽  
Wan Pyo Hong ◽  
Jun Yeob Lee
Keyword(s):  
Hydrogen Bonding ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
High Efficiency ◽  
Delayed Fluorescence ◽  
Planar Structure ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated

Thermally activated delayed fluorescence (TADF) emitters based on a new benzothienopyrimidine acceptor, which is rigid and can form a co-planar structure via hydrogen bonding, were developed as high-efficiency TADF emitters.

Thermally activated delayed fluorescence material with aggregation-induced emission properties for highly efficient organic light-emitting diodes

2018 ◽  
Vol 6 (11) ◽  
pp. 2873-2881 ◽  
Author(s):  
Yaodong Zhao ◽  
Weigao Wang ◽  
Chen Gui ◽  
Li Fang ◽  
Xinlei Zhang ◽  
...  
Keyword(s):  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Luminescent Materials ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Aggregation Induced Emission ◽  
Thermally Activated ◽  
Organic Light ◽  
Fluorescence Material ◽  
Triplet Excitons

Luminescent materials with aggregation-induced emission (AIE) properties exhibit high solid state emission, while thermally activated delayed fluorescence (TADF) materials can fully harvest singlet and triplet excitons to achieve efficient electroluminescence (EL).

Recent advances in persistent luminescence based on molecular hybrid materials

2021 ◽  
Author(s):  
Rui Gao ◽  
Mohamad S. Kodaimati ◽  
Dongpeng Yan
Keyword(s):  
Hybrid Materials ◽  
Room Temperature ◽  
Delayed Fluorescence ◽  
Luminescent Materials ◽  
Persistent Luminescence ◽  
Room Temperature Phosphorescence ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Theoretical Approaches ◽  
Recent Advances

In this review, we summarize recent advances in establishing persistently luminescent materials from the view of examining experimental and theoretical approaches to room-temperature phosphorescence and thermally-activated delayed fluorescence.

Effects of intramolecular hydrogen bonding on the conformation and luminescence properties of dibenzoylpyridine-based thermally activated delayed fluorescence materials

2019 ◽  
Vol 7 (42) ◽  
pp. 13104-13110 ◽  
Author(s):  
Jayabalan Pandidurai ◽  
Jayachandran Jayakumar ◽  
Natarajan Senthilkumar ◽  
Chien-Hong Cheng
Keyword(s):  
Hydrogen Bonding ◽  
Crystal Structures ◽  
Linear Chain ◽  
Intramolecular Hydrogen Bonding ◽  
Delayed Fluorescence ◽  
Chain Conformation ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Intramolecular Hydrogen ◽  
First Time

The crystal structures show a U shape for 26DAcBPy and 26DPXZBPy and a linear chain conformation for 25DAcBPy; for the first time, we reveal that the conformations are the result of intramolecular hydrogen bonding of these molecules.

scholarly journals Molecular Configuration Fixation with C–H···F Hydrogen Bonding for Thermally Activated Delayed Fluorescence Acceleration

Chem ◽  
2020 ◽  
Vol 6 (8) ◽  
pp. 1998-2008 ◽  
Author(s):  
Wenbo Yuan ◽  
Hannan Yang ◽  
Chunbo Duan ◽  
Xudong Cao ◽  
Jing Zhang ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Delayed Fluorescence ◽  
Molecular Configuration ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated

scholarly journals Endowing TADF Luminophors with AIE Properties Though Adjusting Flexible Dendrons for Highly Efficient Solution-Processed Nondoped OLEDs.

2020 ◽  
Author(s):  
Jingyi Wei ◽  
Dan Liu ◽  
Wenwen Tian ◽  
Wei Jiang ◽  
Yueming Sun ◽  
...  
Keyword(s):  
Power Efficiency ◽  
Isopropyl Alcohol ◽  
Alkyl Chain ◽  
Delayed Fluorescence ◽  
Luminescent Materials ◽  
Solution Processed ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Promising Strategy ◽  
Device Efficiency

<p><a>The amalgamation of thermally activated delayed fluorescence (TADF) and aggregation-induced emission (AIE) properties, term AIE-TADF, is a promising strategy to design novel robust luminescent materials. Herein, we transform 2,3,4,5,6-penta(9H-carbazol-9-yl)benzonitrile (5CzBN) from an ACQ molecule to AIEgens by simply decorating a 5CzBN core with alkyl chain-linked spirobifluorene dendrons. By increasing the number of flexible dendrons, these materials can not only show obvious AIE-TADF characteristics and uniform film morphology, but also exhibit better resistance to isopropyl alcohol, which are beneficial to the fully solution-processed OLEDs. Notably, 5CzBN-PSP show great device efficiency with external quantum efficiency (EQE), current efficiency and power efficiency of 20.1%, 58.7 cd A<sup>-1</sup> and 46.2 lm W<sup>-1</sup>, respectively, which achieved record-breaking efficiency in solution-processed nondoped OLEDs based on AIE emitters. It demonstrates a general approach to explore new efficient emitters by the marriage of AIE and TADF what could potentially improve their performance in various areas.</a></p>

Multipath Exciton Harvesting in Diazine-based Luminescent Materials and Their Applications for Organic Light-Emitting Diodes

2021 ◽  
Author(s):  
Ling Yu ◽  
Chuluo Yang
Keyword(s):  
Low Cost ◽  
Recent Decade ◽  
Delayed Fluorescence ◽  
Device Fabrication ◽  
Organic Light Emitting Diodes ◽  
Luminescent Materials ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light

Thermally activated delayed fluorescence (TADF) materials have attracted intensive interests in recent decade owing to their intrinsic merits of 100% exciton collection capability and relatively low-cost device fabrication. An abundance...

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