scholarly journals Thermally activated delayed fluorescence and phosphorescence quenching in iminophosphonamide copper and zinc complexes

2021 ◽  
Author(s):  
Peter Werner Roesky ◽  
Bhupendra Goswami ◽  
Thomas J. Feuerstein ◽  
Ravi Yadav ◽  
Sergei Lebedkin ◽  
...  
Keyword(s):  
Delayed Fluorescence ◽  
Zinc Complexes ◽  
Thermally Activated Delayed Fluorescence ◽  
Phosphorescence Quenching ◽  
Thermally Activated ◽  
Copper And Zinc ◽  
Fluorescence And Phosphorescence

Zinc complexes exhibiting highly efficient thermally activated delayed fluorescence and their application to organic light-emitting diodes

2015 ◽  
Vol 51 (15) ◽  
pp. 3181-3184 ◽  
Author(s):  
Yumi Sakai ◽  
Yuta Sagara ◽  
Hiroko Nomura ◽  
Nozomi Nakamura ◽  
Yoshitake Suzuki ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Metal Complexes ◽  
Delayed Fluorescence ◽  
Zinc Complexes ◽  
Organic Light Emitting Diodes ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light ◽  
Ligand Charge Transfer

Newly synthesized metal complexes emitting thermally activated delayed fluorescence based on intra-ligand charge transfer and enhanced by metallization achieved efficiencies of nearly 20% in vacuum vapor deposited devices.

Reducing lifetime in Cu(i) complexes with thermally activated delayed fluorescence and phosphorescence promoted by chalcogenolate–diimine ligands

2020 ◽  
Vol 8 (41) ◽  
pp. 14595-14604
Author(s):  
Giliandro Farias ◽  
Cristian A. M. Salla ◽  
Renata S. Heying ◽  
Adailton J. Bortoluzzi ◽  
Sergio F. Curcio ◽  
...  
Keyword(s):  
Heavy Atom ◽  
Delayed Fluorescence ◽  
Spin Orbit Coupling ◽  
Matrix Elements ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Diimine Ligands ◽  
Photoluminescence Lifetime ◽  
Atom Effect ◽  
Fluorescence And Phosphorescence

Cu(i) complexes without the expected heavy atom effect to enhance the spin–orbit coupling matrix elements, but with reduced photoluminescence lifetime.

Luminescence color alteration induced by trapped solvent molecules in crystals of tetrahedral gold(i) complexes: near-unity luminescence mixed with thermally activated delayed fluorescence and phosphorescence

2019 ◽  
Vol 48 (25) ◽  
pp. 9094-9103 ◽  
Author(s):  
Masahisa Osawa ◽  
Hiroto Yamayoshi ◽  
Mikio Hoshino ◽  
Yuya Tanaka ◽  
Munetaka Akita
Keyword(s):  
Crystal Lattice ◽  
Delayed Fluorescence ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Emission Color ◽  
Color Alteration ◽  
Solvent Molecules ◽  
Fluorescence And Phosphorescence ◽  
Luminescence Color

Emission color alteration caused by captured solvent molecules in the crystal lattice of tetrahedral gold(i) complexes.

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>

New hole transport styrene polymers bearing highly π-extended conjugated side-chain moieties for high-performance solution-processable thermally activated delayed fluorescence OLEDs

2021 ◽  
Vol 12 (11) ◽  
pp. 1692-1699
Author(s):  
Ji Hye Lee ◽  
Jinhyo Hwang ◽  
Chai Won Kim ◽  
Amit Kumar Harit ◽  
Han Young Woo ◽  
...  
Keyword(s):  
High Performance ◽  
High Efficiency ◽  
Delayed Fluorescence ◽  
Hole Transport ◽  
Side Chain ◽  
Solution Processed ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Turn On ◽  
Solution Processable

New polystyrene-based polymers with high π-extended hole transport pendants were synthesized to obtain a low turn-on voltage and high efficiency in solution-processed green TADF-OLEDs.

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