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Dr Fernando Dias' Outputs (125)

Mitigating slow reverse ISC rates in TAPC:PBD exciplex via rapid Förster energy transfer to TTPA (2024)
Journal Article
Weatherill, L. A., Milverton, R., Pander, P., & Dias, F. B. (2025). Mitigating slow reverse ISC rates in TAPC:PBD exciplex via rapid Förster energy transfer to TTPA. Organic Electronics, 137, Article 107180. https://doi.org/10.1016/j.orgel.2024.107180

There have been many advances in the development of thermally activated delayed fluorescence (TADF) materials for organic light emitting diode (OLED) applications in recent years. In particular, intramolecular exciplex systems have been highly studie... Read More about Mitigating slow reverse ISC rates in TAPC:PBD exciplex via rapid Förster energy transfer to TTPA.

Sonocrystallization induced thermally activated delayed fluorescence via distortion of molecular geometry † (2024)
Journal Article
Maggiore, A., Qu, Y., Pander, P., Dias, F. B., Clavier, G., Guillot, R., Altamura, D., Giannini, C., Maiorano, V., Audebert, P., & Miomandre, F. (2024). Sonocrystallization induced thermally activated delayed fluorescence via distortion of molecular geometry †. Journal of Materials Chemistry C Materials for optical and electronic devices, 12(22), 7943-7955. https://doi.org/10.1039/d4tc00245h

In this work, we present three donor–acceptor thermally activated delayed fluorescence (TADF) molecules comprising a 2,3,5,6-tetrafluorobenzonitrile acceptor with various electron donor units: phenoxazine (Phx-BzN), phenothiazine (Pht-BzN), and carba... Read More about Sonocrystallization induced thermally activated delayed fluorescence via distortion of molecular geometry †.

Slow magnetic relaxation and luminescence properties in β-diketonate lanthanide( iii ) complexes. Preparation of Eu( iii ) and Yb( iii ) OLED devices † (2024)
Journal Article
Tubau, À., Rodríguez, L., Pander, P., Weatherill, L., Dias, F. B., Font-Bardía, M., & Vicente, R. (2024). Slow magnetic relaxation and luminescence properties in β-diketonate lanthanide( iii ) complexes. Preparation of Eu( iii ) and Yb( iii ) OLED devices †. Journal of Materials Chemistry C Materials for optical and electronic devices, 12(22), 8127-8144. https://doi.org/10.1039/d4tc00902a

The reaction of [Ln(btfa)3(H2O)2] (btfa− = 4,4,4-trifluoro-1-phenyl-1,3-butanedionate) with 4,4′-dinonyl-2,2′-bipyridyl (4,4′-dinonylbipy) in ethanol allows isolation of mononuclear complexes [Ln(btfa)3(4,4′-dinonylbipy)] Ln = Sm (1-Sm), Eu (2-Eu), T... Read More about Slow magnetic relaxation and luminescence properties in β-diketonate lanthanide( iii ) complexes. Preparation of Eu( iii ) and Yb( iii ) OLED devices †.

9-Borafluoren-9-yl and diphenylboron tetracoordinate complexes of 8-quinolinolato ligands with heavy-atoms substituents: synthesis, fluorescence and application in OLED devices (2024)
Journal Article
Fialho, C. B., Cruz, T., Calhorda, M., Vieira Ferreira, L., Pander, P., Dias, F. B., Maçanita, A. L., & Gomes, P. (2024). 9-Borafluoren-9-yl and diphenylboron tetracoordinate complexes of 8-quinolinolato ligands with heavy-atoms substituents: synthesis, fluorescence and application in OLED devices. Dyes and Pigments, 228, Article 112174. https://doi.org/10.1016/j.dyepig.2024.112174

This work describes the synthesis and characterisation of new tetrahedral boron complexes, incorporating bromine- or iodine-substituted 8-quinolinolato chelate chromophores connected to 9-borafluoren-9-yl or diphenylboron orthogonal fragments. The mo... Read More about 9-Borafluoren-9-yl and diphenylboron tetracoordinate complexes of 8-quinolinolato ligands with heavy-atoms substituents: synthesis, fluorescence and application in OLED devices.

Nanostructured Channel for Improving Emission Efficiency of Hybrid Light-Emitting Field-Effect Transistors (2023)
Journal Article
Galán-González, A., Pander, P., MacKenzie, R. C. I., Bowen, L., Zeze, D. A., Borthwick, R. J., …Chaudhry, M. U. (2023). Nanostructured Channel for Improving Emission Efficiency of Hybrid Light-Emitting Field-Effect Transistors. ACS Photonics, 10(12), 4315-4321. https://doi.org/10.1021/acsphotonics.3c01080

We report on the mechanism of enhancing the luminance and external quantum efficiency (EQE) by developing nanostructured channels in hybrid (organic/inorganic) light-emitting transistors (HLETs) that combine a solution-processed oxide and a polymer h... Read More about Nanostructured Channel for Improving Emission Efficiency of Hybrid Light-Emitting Field-Effect Transistors.

Thermally activated delayed fluorescence in a deep red dinuclear iridium( iii ) complex: a hidden mechanism for short luminescence lifetimes † (2023)
Journal Article
Pander, P., Zaytsev, A. V., Sil, A., Baryshnikov, G. V., Siddique, F., Williams, J. A. G., …Kozhevnikov, V. N. (2023). Thermally activated delayed fluorescence in a deep red dinuclear iridium( iii ) complex: a hidden mechanism for short luminescence lifetimes †. Chemical Science, 14, 13934-13943. https://doi.org/10.1039/d3sc04450e

The high luminescence efficiency of cyclometallated iridium(iii) complexes, including those widely used in OLEDs, is typically attributed solely to the formally spin-forbidden phosphorescence process being facilitated by spin–orbit coupling with the... Read More about Thermally activated delayed fluorescence in a deep red dinuclear iridium( iii ) complex: a hidden mechanism for short luminescence lifetimes †.

Unusual Excimer/Dimer Behavior of a Highly Soluble C,N Platinum(II) Complex with a Spiro-Fluorene Motif. (2023)
Journal Article
Pander, P., Zaytsev, A. V., Franca, L. G., Dias, F. B., & Kozhevnikov, V. N. (2023). Unusual Excimer/Dimer Behavior of a Highly Soluble C,N Platinum(II) Complex with a Spiro-Fluorene Motif. Inorganic Chemistry, 62, 18465 - 18473. https://doi.org/10.1021/acs.inorgchem.3c02667

In this work, we introduce a spiro-fluorene unit into a phenylpyridine (CN)-type ligand as a simple way to deplanarize the structure and increase the solubility of the final platinum(II)···complex. Using a spiro-fluorene unit, orthogonal to the main... Read More about Unusual Excimer/Dimer Behavior of a Highly Soluble C,N Platinum(II) Complex with a Spiro-Fluorene Motif..

Rigidly linked dinuclear platinum( ii ) complexes showing intense, excimer-like, near-infrared luminescence (2023)
Journal Article
Pander, P., Walden, M. T., Salthouse, R. J., Sil, A., Yufit, D. S., Dias, F. B., & Williams, J. A. G. (2023). Rigidly linked dinuclear platinum( ii ) complexes showing intense, excimer-like, near-infrared luminescence. Journal of Materials Chemistry C Materials for optical and electronic devices, 11(43), 15335-15346. https://doi.org/10.1039/d3tc03432a

Many luminescent platinum(ii) complexes undergo face-to-face interactions between neighbouring molecules, leading to bimolecular excited states that may emit at lower energy (dimers and/or excimers). Detailed photophysical studies are reported on din... Read More about Rigidly linked dinuclear platinum( ii ) complexes showing intense, excimer-like, near-infrared luminescence.

Electroluminescence of Tetradentate Pt(II) Complexes: O^N^N^O versus C^N^N^O Coordination (2023)
Journal Article
Pander, P., *Gomes Franca, L., Dias, F. B., & Kozhevnikov, V. N. (2023). Electroluminescence of Tetradentate Pt(II) Complexes: O^N^N^O versus C^N^N^O Coordination. Inorganic Chemistry, 62(14), https://doi.org/10.1021/acs.inorgchem.3c00364

Alkylation of one of the phenolic hydroxyl groups in a salen-type tetradentate ligand changes the coordination mode from O^N^N^O to the cyclometallating C^N^N^O type. The ligand was used to synthesize a new cyclometalated luminescent Pt(II) complex 2... Read More about Electroluminescence of Tetradentate Pt(II) Complexes: O^N^N^O versus C^N^N^O Coordination.

9-Borafluoren-9-yl and diphenylboron tetracoordinate complexes of F- and Cl-substituted 8-quinolinolato ligands: synthesis, molecular and electronic structures, fluorescence and application in OLED devices (2023)
Journal Article
Fialho, C. B., Cruz, T. F. C., Rodrigues, A. I., Calhorda, M. J., Vieira Ferreira, L. F., Dias, F. B., …Gomes, P. T. (2023). 9-Borafluoren-9-yl and diphenylboron tetracoordinate complexes of F- and Cl-substituted 8-quinolinolato ligands: synthesis, molecular and electronic structures, fluorescence and application in OLED devices. Dalton Transactions, 52(15), 4933-4953. https://doi.org/10.1039/d3dt00496a

Six new four-coordinate tetrahedral boron complexes, containing 9-borafluoren-9-yl and diphenylboron cores attached to orthogonal fluorine- and chlorine-substituted 8-quinolinolato ligand chromophores, have been synthesised, characterised, and applie... Read More about 9-Borafluoren-9-yl and diphenylboron tetracoordinate complexes of F- and Cl-substituted 8-quinolinolato ligands: synthesis, molecular and electronic structures, fluorescence and application in OLED devices.

Zinc Phthalocyanine Sensing Mechanism Quantification for Potential Application in Chemical Warfare Agent Detectors (2022)
Journal Article
Powroźnik, P., Solecka, B., Pander, P., Jakubik, W., Dias, F. B., & Krzywiecki, M. (2022). Zinc Phthalocyanine Sensing Mechanism Quantification for Potential Application in Chemical Warfare Agent Detectors. Sensors, 22(24), Article 9947. https://doi.org/10.3390/s22249947

Rapid and accurate detection of lethal volatile compounds is an emerging requirement to ensure the security of the current and future society. Since the threats are becoming more complex, the assurance of future sensing devices’ performance can be ob... Read More about Zinc Phthalocyanine Sensing Mechanism Quantification for Potential Application in Chemical Warfare Agent Detectors.

Near-infrared electroluminescence beyond 940 nm in Pt(N^C^N)X complexes: influencing aggregation with the ancillary ligand X (2022)
Journal Article
Salthouse, R. J., Pander, P., Yufit, D. S., Dias, F. B., & Williams, J. G. (2022). Near-infrared electroluminescence beyond 940 nm in Pt(N^C^N)X complexes: influencing aggregation with the ancillary ligand X. Chemical Science, 13(45), 13600-13610. https://doi.org/10.1039/d2sc05023d

We present a study of aggregate excited states formed by complexes of the type Pt(N^C^N)X, where N^C^N represents a tridentate cyclometallating ligand, and X = SCN or I. These materials display near-infrared (NIR) photoluminescence in film and electr... Read More about Near-infrared electroluminescence beyond 940 nm in Pt(N^C^N)X complexes: influencing aggregation with the ancillary ligand X.

Excimer or aggregate? Near infrared electro- and photoluminescence from multimolecular excited states of N^C^N-coordinated platinum(ii) complexes (2022)
Journal Article
Pander, P., Sil, A., Salthouse, R. J., Harris, C. W., Walden, M. T., Yufit, D. S., Williams, J. G., & Dias, F. B. (2022). Excimer or aggregate? Near infrared electro- and photoluminescence from multimolecular excited states of N^C^N-coordinated platinum(ii) complexes. Journal of Materials Chemistry C Materials for optical and electronic devices, 10(40), 15084-15095. https://doi.org/10.1039/d2tc01511k

We present an experimental and theoretical study of aggregate excited states formed by complexes of the type Pt(N^C^N)Cl, which display near-infrared (NIR) photoluminescence in film and NIR electroluminescence in OLED devices. Here, N^C^N represents... Read More about Excimer or aggregate? Near infrared electro- and photoluminescence from multimolecular excited states of N^C^N-coordinated platinum(ii) complexes.

Novel Easy to Synthesize Benzonitrile Compounds with Mixed Carbazole and Phenoxazine Substituents Exhibiting Dual Emission and TADF Properties (2022)
Journal Article
Maggiore, A., Qu, Y., Guillot, R., Pander, P., Vasylieva, M., Data, P., Dias, F. B., Audebert, P., Clavier, G., & Miomandre, F. (2022). Novel Easy to Synthesize Benzonitrile Compounds with Mixed Carbazole and Phenoxazine Substituents Exhibiting Dual Emission and TADF Properties. Journal of Physical Chemistry B (Soft Condensed Matter and Biophysical Chemistry), 126(14), 2740-2753. https://doi.org/10.1021/acs.jpcb.2c00219

The photophysical and electrochemical properties of a new class of fluorinated benzonitrile compounds substituted with mixed phenoxazine and carbazole units have been investigated. When absorbing in a large range of the UV–vis spectrum due to both lo... Read More about Novel Easy to Synthesize Benzonitrile Compounds with Mixed Carbazole and Phenoxazine Substituents Exhibiting Dual Emission and TADF Properties.

TADF dendronized polymer with vibrationally enhanced direct spin-flip between charge-transfer states for efficient non-doped solution-processed OLEDs (2022)
Journal Article
Li, C., Harrison, A. K., Liu, Y., Zhao, Z., Dias, F. B., Zeng, C., Yan, S., Bryce, M. R., & Ren, Z. (2022). TADF dendronized polymer with vibrationally enhanced direct spin-flip between charge-transfer states for efficient non-doped solution-processed OLEDs. Chemical Engineering Journal, 435, Article 134924. https://doi.org/10.1016/j.cej.2022.134924

A novel type of thermally activated delayed fluorescence (TADF) dendronized polymer was designed and synthesized. Firstly, one side of the asymmetric TADF unit was encapsulated by 3,6-di-tert-butylcarbazole via a conjugated linkage with strong twiste... Read More about TADF dendronized polymer with vibrationally enhanced direct spin-flip between charge-transfer states for efficient non-doped solution-processed OLEDs.

Asymmetrical‐Dendronized TADF Emitters for Efficient Non‐doped Solution‐Processed OLEDs by Eliminating Degenerate Excited States and Creating Solely Thermal Equilibrium Routes (2022)
Journal Article
Li, C., Harrison, A. K., Liu, Y., Zhao, Z., Zeng, C., Dias, F. B., Ren, Z., Yan, S., & Bryce, M. R. (2022). Asymmetrical‐Dendronized TADF Emitters for Efficient Non‐doped Solution‐Processed OLEDs by Eliminating Degenerate Excited States and Creating Solely Thermal Equilibrium Routes. Angewandte Chemie International Edition, 61(19), Article e202115140. https://doi.org/10.1002/anie.202115140

Two asymmetric “half-dendronized” and “half-dendronized-half-encapsulated” TADF emitters eliminate degenerate excited states, assuring a solely thermal equilibrium route for an effective spin-flip process. AEE properties can minimize the exciton quen... Read More about Asymmetrical‐Dendronized TADF Emitters for Efficient Non‐doped Solution‐Processed OLEDs by Eliminating Degenerate Excited States and Creating Solely Thermal Equilibrium Routes.

Applying TADF Emitters in Bioimaging and Sensing—A Novel Approach Using Liposomes for Encapsulation and Cellular Uptake (2021)
Journal Article
Smith, P. O., Black, D. J., Pal, R., Avó, J., Dias, F. B., Linthwaite, V. L., Cann, M. J., & Pålsson, L.-O. (2021). Applying TADF Emitters in Bioimaging and Sensing—A Novel Approach Using Liposomes for Encapsulation and Cellular Uptake. Frontiers in Chemistry, 9, Article 743928. https://doi.org/10.3389/fchem.2021.743928

A new method for facilitating the delivery, uptake and intracellular localisation of thermally activated delayed fluorescence (TADF) complexes was developed. First, confinement of TADF complexes in liposomes was demonstrated, which were subsequently... Read More about Applying TADF Emitters in Bioimaging and Sensing—A Novel Approach Using Liposomes for Encapsulation and Cellular Uptake.

The Role of Dinuclearity in Promoting Thermally Activated Delayed Fluorescence (TADF) in Cyclometallated, N^C^N-coordinated Platinum(II) Complexes (2021)
Journal Article
Pander, P. H., Zaytsev, A., Sil, A., Williams, J. G., Lanoë, P.-H., Kozhevnikov, V. N., & Dias, F. B. (2021). The Role of Dinuclearity in Promoting Thermally Activated Delayed Fluorescence (TADF) in Cyclometallated, N^C^N-coordinated Platinum(II) Complexes. Journal of Materials Chemistry C Materials for optical and electronic devices, 9(32), 10276-10287. https://doi.org/10.1039/d1tc02562g

In this work we present synthesis and an in-depth photophysical analysis of a di-Pt(II) complex with a ditopic bis-N^C^N ligand. The complex exhibits a dual luminescent behaviour by emitting simultaneously delayed fluorescence and phosphorescence. By... Read More about The Role of Dinuclearity in Promoting Thermally Activated Delayed Fluorescence (TADF) in Cyclometallated, N^C^N-coordinated Platinum(II) Complexes.

Intramolecular interchromophore singlet-singlet and triplet-singlet energy transfer in a metal-free donor-acceptor emitter (2021)
Journal Article
Tavares, I. G., Enkvist, E., Kaimre, J., Uri, A., & Dias, F. B. (2021). Intramolecular interchromophore singlet-singlet and triplet-singlet energy transfer in a metal-free donor-acceptor emitter. Journal of Luminescence, 237, Article 118183. https://doi.org/10.1016/j.jlumin.2021.118183

In this work we demonstrate the occurrence of singlet to singlet, and triplet to singlet, intramolecular energy transfer between two thiophene-comprising donors (D) and a central perylene bisimide acceptor (A) covalently linked to each other trough a... Read More about Intramolecular interchromophore singlet-singlet and triplet-singlet energy transfer in a metal-free donor-acceptor emitter.