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Intramolecular Charge Transfer Controls Switching Between Room Temperature Phosphorescence and Thermally Activated Delayed Fluorescence (2018)
Journal Article
Chen, C., Huang, R., Batsanov, A., Pander, P., Hsu, Y., Chi, Z., …Bryce, M. R. (2018). Intramolecular Charge Transfer Controls Switching Between Room Temperature Phosphorescence and Thermally Activated Delayed Fluorescence. Angewandte Chemie, 130(50), 16645-16649. https://doi.org/10.1002/ange.201809945

Chemical modification of phenothiazine–benzophenone derivatives is shown to tune the emission behavior from triplet states by selecting the molecular geometry of the intramolecular charge transfer (ICT) state. A fundamental principle of planar ICT (P... Read More about Intramolecular Charge Transfer Controls Switching Between Room Temperature Phosphorescence and Thermally Activated Delayed Fluorescence.

Interfacial TADF Exciplex as a Tool to Localise Excitons, Improve Efficiency and Increase OLED Lifetime (2018)
Journal Article
Colella, M., Pander, P. H., Pereira, D. D. S., & Monkman, A. P. (2018). Interfacial TADF Exciplex as a Tool to Localise Excitons, Improve Efficiency and Increase OLED Lifetime. ACS Applied Materials and Interfaces, 10(46), 40001-40007. https://doi.org/10.1021/acsami.8b15942

In this work, we employ a TADF exciplex formed between the emissive layer (EML) host, 26DCzPPy, and the electron transport layer (ETL), PO-T2T at the interface between the EML and the ETL to improve the stability and efficiency of a phosphorescence O... Read More about Interfacial TADF Exciplex as a Tool to Localise Excitons, Improve Efficiency and Increase OLED Lifetime.

Thermally Activated Delayed Fluorescence Mediated through the Upper Triplet State Manifold in Non-Charge-Transfer Star-Shaped Triphenylamine–Carbazole Molecules (2018)
Journal Article
Pander, P., Motyka, R., Zassowski, P., Etherington, M. K., Varsano, D., da Silva, T. J., …Monkman, A. P. (2018). Thermally Activated Delayed Fluorescence Mediated through the Upper Triplet State Manifold in Non-Charge-Transfer Star-Shaped Triphenylamine–Carbazole Molecules. Journal of Physical Chemistry C, 122(42), 23934-23942. https://doi.org/10.1021/acs.jpcc.8b07610

Thermally activated delayed fluorescence has been found in a group of tricarbazolylamines that are purely electron-donating, non-charge-transfer (CT) molecules. We show that the reverse intersystem crossing step in these materials is mediated through... Read More about Thermally Activated Delayed Fluorescence Mediated through the Upper Triplet State Manifold in Non-Charge-Transfer Star-Shaped Triphenylamine–Carbazole Molecules.

Thermally-Activated Delayed Fluorescence in Polymer-Small Molecule Exciplex Blends for Solution-Processed Organic Light-Emitting Diodes (2018)
Journal Article
Pander, P. H., Gogoc, S., Colella, M., Data, P., & Dias, F. B. (2018). Thermally-Activated Delayed Fluorescence in Polymer-Small Molecule Exciplex Blends for Solution-Processed Organic Light-Emitting Diodes. ACS Applied Materials and Interfaces, 10(34), 28796-28802. https://doi.org/10.1021/acsami.8b07554

The photophysics of an exciplex state, formed between a small molecule and a polymer, is investigated in this work. The results obtained with this blend show the strong potential of polymer-small molecule blends for triplet harvesting in organic ligh... Read More about Thermally-Activated Delayed Fluorescence in Polymer-Small Molecule Exciplex Blends for Solution-Processed Organic Light-Emitting Diodes.

Thermally Activated Delayed Fluorescence with Narrow Emission Spectrum and Organic Room Temperature Phosphorescence by Controlling Spin-Orbit Coupling and Phosphorescence Lifetime of Metal-Free Organic Molecules (2018)
Journal Article
Pander, P. H., Swist, A., Soloducho, J., Dias, F., & Data, P. (2018). Thermally Activated Delayed Fluorescence with Narrow Emission Spectrum and Organic Room Temperature Phosphorescence by Controlling Spin-Orbit Coupling and Phosphorescence Lifetime of Metal-Free Organic Molecules. Journal of Materials Chemistry C Materials for optical and electronic devices, 6(20), 5434--5443. https://doi.org/10.1039/c8tc00175h

This work shows a study of two organic molecules with very similar, large singlet-triplet gap of which one is a TADF emitter and the other an RTP emitter. By investigation of photophysical properties of these compounds, it is possible to explain thei... Read More about Thermally Activated Delayed Fluorescence with Narrow Emission Spectrum and Organic Room Temperature Phosphorescence by Controlling Spin-Orbit Coupling and Phosphorescence Lifetime of Metal-Free Organic Molecules.

1,2,4-Triazines in the Synthesis of Bipyridine Bisphenolate O^N^N^O Ligands and Their Highly Luminescent Tetradentate Pt(II) Complexes for Solution-Processable OLEDs (2018)
Journal Article
Pander, P., Bulmer, R., Martinscroft, R., Thompson, S., Lewis, F., Penfold, T., …Kozhevnikov, V. (2018). 1,2,4-Triazines in the Synthesis of Bipyridine Bisphenolate O^N^N^O Ligands and Their Highly Luminescent Tetradentate Pt(II) Complexes for Solution-Processable OLEDs. Inorganic Chemistry, 57(7), 3825-3832. https://doi.org/10.1021/acs.inorgchem.7b03175

Easily accessible bis-1,2,4-triazines can be converted to corresponding pyridines by the Boger reaction, opening up convenient synthesis pathways to salen-type tetradentate dianionic ligands. The new ligands were used to prepare highly luminescent ON... Read More about 1,2,4-Triazines in the Synthesis of Bipyridine Bisphenolate O^N^N^O Ligands and Their Highly Luminescent Tetradentate Pt(II) Complexes for Solution-Processable OLEDs.

Multicolor Luminescence Switching and Controllable Thermally Activated Delayed Fluorescence Turn on/Turn off in Carbazole–Quinoxaline–Carbazole Triads (2018)
Journal Article
Pashazadeh, R., Pander, P., Lazauskas, A., Dias, F. B., & Grazulevicius, J. V. (2018). Multicolor Luminescence Switching and Controllable Thermally Activated Delayed Fluorescence Turn on/Turn off in Carbazole–Quinoxaline–Carbazole Triads. Journal of Physical Chemistry Letters, 9(5), 1172-1177. https://doi.org/10.1021/acs.jpclett.8b00136

We report a series of thermally activated delayed fluorescence (TADF) molecules with mechanochromic luminescence properties and reversible TADF turn on/off properties in solid state that are induced by the transition between amorphous and crystalline... Read More about Multicolor Luminescence Switching and Controllable Thermally Activated Delayed Fluorescence Turn on/Turn off in Carbazole–Quinoxaline–Carbazole Triads.