Entropy-Gated Thermally Activated Delayed Emission Lifetime in Phenanthrene-Functionalized CsPbBr3 Perovskite Nanocrystals

2021 ◽  
pp. 8598-8604
Author(s):  
Shan He ◽  
Yaoyao Han ◽  
Jingwei Guo ◽  
Kaifeng Wu
Keyword(s):  
Perovskite Nanocrystals ◽  
Thermally Activated ◽  
Emission Lifetime

Efficient Thermally Activated Delayed Fluorescence from All‐Inorganic Cesium Zirconium Halide Perovskite Nanocrystals

2020 ◽  
Vol 132 (49) ◽  
pp. 22109-22113
Author(s):  
Siping Liu ◽  
Bin Yang ◽  
Junsheng Chen ◽  
Donghui Wei ◽  
Daoyuan Zheng ◽  
...  
Keyword(s):  
Delayed Fluorescence ◽  
Thermally Activated Delayed Fluorescence ◽  
Perovskite Nanocrystals ◽  
Thermally Activated ◽  
Halide Perovskite

Rationally designed organelle-specific thermally activated delayed fluorescence small molecule organic probes for time-resolved biological applications

2019 ◽  
Vol 55 (39) ◽  
pp. 5639-5642 ◽  
Author(s):  
Qingyang Zhang ◽  
Shengnan Xu ◽  
Meng Li ◽  
Yali Wang ◽  
Na Zhang ◽  
...  
Keyword(s):  
Small Molecule ◽  
Fluorescence Emission ◽  
Delayed Fluorescence ◽  
Biological Applications ◽  
Time Resolved ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Emission Lifetime ◽  
New Strategy ◽  
In Cells

A new strategy for TADF-based probes to maintain long fluorescence emission lifetime in TRFI studies in cells was developed.

scholarly journals Fast Delayed Emission in New Pyridazine-Based Compounds

2021 ◽  
Vol 8 ◽  
Author(s):  
Simonas Krotkus ◽  
Tomas Matulaitis ◽  
Stefan Diesing ◽  
Graeme Copley ◽  
Emily Archer ◽  
...  
Keyword(s):  
Photophysical Properties ◽  
Delayed Fluorescence ◽  
Intersystem Crossing ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Emission Lifetime ◽  
Donor Acceptor ◽  
Acceptor Moiety ◽  
Triplet Harvesting ◽  
Acceptor Molecules

Three novel donor-acceptor molecules comprising the underexplored pyridazine (Pydz) acceptor moiety have been synthesized and their structural, electrochemical and photophysical properties thoroughly characterized. Combining Pydz with two phenoxazine donor units linked via a phenyl bridge in a meta configuration (dPXZMePydz) leads to high reverse intersystem crossing rate kRISC = 3.9 · 106 s−1 and fast thermally activated delayed fluorescence (TADF) with <500 ns delayed emission lifetime. Efficient triplet harvesting via the TADF mechanism is demonstrated in OLEDs using dPXZMePydz as the emitter but does not occur for compounds bearing weaker donor units.

Thermally activated flow of β-titanium and β-titanium-hydrogen alloys

2000 ◽  
Vol 80 (12) ◽  
pp. 2813-2825
Author(s):  
O. N. Senkov, J. J. Jonas, F. H. Froes
Keyword(s):  
Thermally Activated

Ultrafast photo-induced processes in perovskite nanocrystals

2020 ◽  
Author(s):  
Goutam Ghosh ◽  
Amitava Patra ◽  
Arnab Ghosh ◽  
Srijon Ghosh
Keyword(s):  
Perovskite Nanocrystals

Solvent Dependence of Structural Dynamics and Spin-flip Processes in 3,4,5-tri(9H-carbazole-9-yl)benzonitrile (ortho-3CzBN)

2020 ◽  
Author(s):  
Masaki Saigo ◽  
Kiyoshi Miyata ◽  
Hajime Nakanotani ◽  
Chihaya Adachi ◽  
Ken Onda
Keyword(s):  
Dft Calculations ◽  
Excited States ◽  
Structural Changes ◽  
Photophysical Properties ◽  
Delayed Fluorescence ◽  
Time Resolved ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Solvent Dependence ◽  
Acetonitrile Solutions

We have investigated the solvent-dependence of structural changes along with intersystem crossing of a thermally activated delayed fluorescence (TADF) molecule, 3,4,5-tri(9H-carbazole-9-yl)benzonitrile (o-3CzBN), in toluene, tetrahydrofuran, and acetonitrile solutions using time-resolved infrared (TR-IR) spectroscopy and DFT calculations. We found that the geometries of the S1 and T1 states are very similar in all solvents though the photophysical properties mostly depend on the solvent. In addition, the time-dependent DFT calculations based on these geometries suggested that the thermally activated delayed fluorescence process of o-3CzBN is governed more by the higher-lying excited states than by the structural changes in the excited states.<br>

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