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Luminescent bis-tridentate iridium(III) complexes: Overcoming the undesirable reactivity of trans-disposed metallated rings using –N^N^N–coordinating bis(1,2,4-triazolyl)pyridine ligands (2021)
Journal Article
Walden, M. T., Yufit, D. S., & Williams, J. G. (2022). Luminescent bis-tridentate iridium(III) complexes: Overcoming the undesirable reactivity of trans-disposed metallated rings using –N^N^N–coordinating bis(1,2,4-triazolyl)pyridine ligands. Inorganica Chimica Acta, 532, Article 120737. https://doi.org/10.1016/j.ica.2021.120737

Nine new iridium(III) complexes featuring two tridentate ligands have been synthesised of the form Ir(N^C^N)(–N^N^N–), where N^C^N represents a cyclometallating ligand based on 1,3-di(2-pyridyl)benzene and –N^N^N– is a doubly deprotonated bis(1,2,4-t... Read More about Luminescent bis-tridentate iridium(III) complexes: Overcoming the undesirable reactivity of trans-disposed metallated rings using –N^N^N–coordinating bis(1,2,4-triazolyl)pyridine ligands.

Tilting micromirror platform based on liquid dielectrophoresis (2021)
Journal Article
Frozanpoor, I., Cooke, M., Alvarez-Ruiz, D., Ambukan, V., Gallant, A., & Balocco, C. (2021). Tilting micromirror platform based on liquid dielectrophoresis. Sensors and Actuators A: Physical, 332(2), Article 113177. https://doi.org/10.1016/j.sna.2021.113177

This study presents an electrically actuated tilting micro platform based on liquid dielectrophoresis with three axes movement using three droplets situated 120° apart from each other. The interdigitated electrodes produce a non-uniform electric fiel... Read More about Tilting micromirror platform based on liquid dielectrophoresis.

Supramolecular Repair of Hydration Lubrication Surfaces (2021)
Journal Article
Wang, Y., Sun, Y., Avestro, A., McGonigal, P., & Zhang, H. (2022). Supramolecular Repair of Hydration Lubrication Surfaces. Chem, 8(2), 480-493. https://doi.org/10.1016/j.chempr.2021.11.001

Although advances in coating technologies have allowed us to match—or even exceed—the lubricity of Nature’s low-friction surfaces, the performance of synthetic materials inevitably diminish over time as the surfaces are worn and damaged by irreversib... Read More about Supramolecular Repair of Hydration Lubrication Surfaces.

Insights into the antibacterial mechanism of action of chelating agents by selective deprivation of iron, manganese and zinc (2021)
Journal Article
Paterson, J. R., Beecroft, M. S., Mulla, R. S., Osman, D., Reeder, N. L., Caserta, J. A., …Sharples, G. J. (2022). Insights into the antibacterial mechanism of action of chelating agents by selective deprivation of iron, manganese and zinc. Applied and Environmental Microbiology, https://doi.org/10.1128/aem.01641-21

Bacterial growth and proliferation can be restricted by limiting the availability of metal ions in their environment. Humans sequester iron, manganese and zinc to help prevent infection by pathogens, a system termed nutritional immunity. Commercially... Read More about Insights into the antibacterial mechanism of action of chelating agents by selective deprivation of iron, manganese and zinc.

Brightly Luminescent Platinum Complexes of N∧C–∧N Ligands Forming Six-Membered Chelate Rings: Offsetting Deleterious Ring Size Effects Using Site-Selective Benzannulation (2021)
Journal Article
Ortiz, R. J., Braun, J. D., Williams, J. G., & Herbert, D. E. (2021). Brightly Luminescent Platinum Complexes of N∧C–∧N Ligands Forming Six-Membered Chelate Rings: Offsetting Deleterious Ring Size Effects Using Site-Selective Benzannulation. Inorganic Chemistry, https://doi.org/10.1021/acs.inorgchem.1c02551

Brightly emissive platinum(II) complexes (λemission,max = 607–612 nm) of the type RLPtCl are reported, where RL is a cyclometalated N∧C–∧N-coordinating ligand derived from 1,3-di(2-trifluoromethyl-4-phenanthridinyl)benzene (CF3LH) or 1,3-di(2-tert-bu... Read More about Brightly Luminescent Platinum Complexes of N∧C–∧N Ligands Forming Six-Membered Chelate Rings: Offsetting Deleterious Ring Size Effects Using Site-Selective Benzannulation.

Halogenation of a twisted non-polar π-system as a tool to modulate phosphorescence at room temperature (2021)
Journal Article
Farias, G., Salla, C. A., Aydemir, M., Sturm, L., Dechambenoit, P., Durola, F., …Bechtold, I. H. (2021). Halogenation of a twisted non-polar π-system as a tool to modulate phosphorescence at room temperature. Chemical Science, 12(45), https://doi.org/10.1039/d1sc04936d

Halogenation of a twisted three-fold symmetric hydrocarbon with F, Cl or Br leads to strong modulation of triplet–triplet annihilation and dual phosphorescence, one thermally activated and the other very persistent and visible by eye, with different... Read More about Halogenation of a twisted non-polar π-system as a tool to modulate phosphorescence at room temperature.

Platinum(ii) complexes of benzannulated N∧N−∧O-amido ligands: bright orange phosphors with long-lived excited states (2021)
Journal Article
Lozada, I. B., Williams, J. G., & Herbert, D. E. (2022). Platinum(ii) complexes of benzannulated N∧N−∧O-amido ligands: bright orange phosphors with long-lived excited states. Inorganic Chemistry Frontiers, 9(1), 10-22. https://doi.org/10.1039/d1qi01120k

The synthesis, structural characterization and photophysical properties of a series of platinum(II) complexes of benzannulated pincer-type diarylamido ligands are described. The ligands all contain tricyclic phenanthridine (3,4-benzoquinoline) rings... Read More about Platinum(ii) complexes of benzannulated N∧N−∧O-amido ligands: bright orange phosphors with long-lived excited states.

Differing Impacts of Blended Fullerene Acceptors on the Performance of Ternary Organic Solar Cells (2021)
Journal Article
Palacios-Gómez, D. A., Huerta Flores, A. M., MacKenzie, R. C., Pearson, C., Alanazi, F., Mendis, B. G., & Groves, C. (2021). Differing Impacts of Blended Fullerene Acceptors on the Performance of Ternary Organic Solar Cells. ACS Applied Energy Materials, 4(10), 10867-10876. https://doi.org/10.1021/acsaem.1c01833

Organic photovoltaic (OPV) devices offer the ability to tune the electronic and optical properties of the active layer by selection of a wide range of molecules; however, their power conversion efficiencies currently lag other competing photovoltaic... Read More about Differing Impacts of Blended Fullerene Acceptors on the Performance of Ternary Organic Solar Cells.

A semi-classical theory of magnetic inelastic scattering in transmission electron energy loss spectroscopy (2021)
Journal Article
Mendis, B. (2021). A semi-classical theory of magnetic inelastic scattering in transmission electron energy loss spectroscopy. Ultramicroscopy, 230, Article 113390. https://doi.org/10.1016/j.ultramic.2021.113390

The feasibility of detecting magnetic excitations using monochromated electron energy loss spectroscopy in the transmission electron microscope is examined. Inelastic scattering cross-sections are derived using a semi-classical electrodynamic model,... Read More about A semi-classical theory of magnetic inelastic scattering in transmission electron energy loss spectroscopy.

Biphasic epoxy-ionic liquid structural electrolytes: minimising feature size through cure cycle and multifunctional block-copolymer addition (2021)
Journal Article
Wendong, Q., Dent, J., Arrighi, V., Cavalcanti, L., Shaffer, M. S., & Shirshova, N. (2021). Biphasic epoxy-ionic liquid structural electrolytes: minimising feature size through cure cycle and multifunctional block-copolymer addition. Multifunctional materials, 4(3), Article 035003. https://doi.org/10.1088/2399-7532/ac1ea7

Structural electrolytes provide mechanical properties approaching structural resin combined with a high degree of ionic conductivity. Here, structural electrolytes based on bisphenol A diglycidyl ether and the ionic liquid 1-ethyl-3-methylimidazolium... Read More about Biphasic epoxy-ionic liquid structural electrolytes: minimising feature size through cure cycle and multifunctional block-copolymer addition.

Surface Core Hole Electron Energy-Loss Fine Structure in MgO: Experiment and Theory (2021)
Journal Article
Mendis, B. (2021). Surface Core Hole Electron Energy-Loss Fine Structure in MgO: Experiment and Theory. Microscopy and Microanalysis, 27(6), 1316-1327. https://doi.org/10.1017/s1431927621012691

Core holes are an important contributing factor to the core-loss fine structure in electron energy-loss spectroscopy (EELS). While there has been much work on bulk materials, less is known about core hole screening in more complex dielectric environm... Read More about Surface Core Hole Electron Energy-Loss Fine Structure in MgO: Experiment and Theory.

Supramolecular oligourethane gels as light-harvesting antennae: achieving multicolour luminescence and white-light emission through FRET (2021)
Journal Article
Jiang, N., Wang, R., You, X., Geng, Y., Zhu, D., Zhang, N., & Bryce, M. R. (2021). Supramolecular oligourethane gels as light-harvesting antennae: achieving multicolour luminescence and white-light emission through FRET. Journal of Materials Chemistry C Materials for optical and electronic devices, 9(38), https://doi.org/10.1039/d1tc03105h

Soft luminescent gel materials have many practical applications due to their excellent solution processability, thixotropic, soft and facile coating performance. Here we have prepared a series of oligourethane (OU)-based gelators with fine-tuned opti... Read More about Supramolecular oligourethane gels as light-harvesting antennae: achieving multicolour luminescence and white-light emission through FRET.

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., …Pålsson, L. (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.

Heteroatom Effects on Quantum Interference in Molecular Junctions: Modulating Antiresonances by Molecular Design (2021)
Journal Article
O’Driscoll, L. J., Sangtarash, S., Xu, W., Daaoub, A., Hong, W., Sadeghi, H., & Bryce, M. R. (2021). Heteroatom Effects on Quantum Interference in Molecular Junctions: Modulating Antiresonances by Molecular Design. Journal of Physical Chemistry C, 125(31), 17385-17391. https://doi.org/10.1021/acs.jpcc.1c04242

Controlling charge transport through molecular wires by utilizing quantum interference (QI) is a growing topic in single-molecular electronics. In this article, scanning tunneling microscopy-break junction techniques and density functional theory cal... Read More about Heteroatom Effects on Quantum Interference in Molecular Junctions: Modulating Antiresonances by Molecular Design.

Synthesis, structures and luminescence properties of N^C^N-coordinated platinum(II) complexes based on an anthracene core: a red shift and a twist (2021)
Journal Article
Wood, E. A., Gildea, L. F., Yufit, D. S., & Williams, J. G. (2021). Synthesis, structures and luminescence properties of N^C^N-coordinated platinum(II) complexes based on an anthracene core: a red shift and a twist. Polyhedron, 207, Article 115401. https://doi.org/10.1016/j.poly.2021.115401

1,8-Bis(2-pyridyl)anthracene HL2 is shown to act as a tridentate, N^C^N-coordinating ligand to platinum(II), undergoing metallation at position 9 of the anthracene. The structures of Pt(N^C^N-L2)Cl and of HL2 have been determined by X-ray diffraction... Read More about Synthesis, structures and luminescence properties of N^C^N-coordinated platinum(II) complexes based on an anthracene core: a red shift and a twist.

Helically chiral NHC‐gold(I) complexes: synthesis, chiroptical properties and electronic features of the [5]helicene‐imidazolylidene ligand (2021)
Journal Article
Gauthier, E. S., Cordier, M., Dorcet, V., Vanthuyne, N., Favereau, L., Williams, J. G., & Crassous, J. (2021). Helically chiral NHC‐gold(I) complexes: synthesis, chiroptical properties and electronic features of the [5]helicene‐imidazolylidene ligand. European Journal of Organic Chemistry, 2021(34), 4769-4776. https://doi.org/10.1002/ejoc.202100722

The golden twist: Monodentate [5]helicene-imidazolylidene gold(I) complexes were prepared in good yields and structurally characterized. Benefiting from the presence of the configurationally stable [5]helicenic unit, they exhibit appealing chiroptica... Read More about Helically chiral NHC‐gold(I) complexes: synthesis, chiroptical properties and electronic features of the [5]helicene‐imidazolylidene ligand.

Enantioenriched Ruthenium-Tris-Bipyridine Complexes Bearing One Helical Bipyridine Ligand: Access to Fused Multihelicenic Systems and Chiroptical Redox Switches (2021)
Journal Article
Kos, M., Rodríguez, R., Storch, J., Sýkora, J., Caytan, E., Cordier, M., …Crassous, J. (2021). Enantioenriched Ruthenium-Tris-Bipyridine Complexes Bearing One Helical Bipyridine Ligand: Access to Fused Multihelicenic Systems and Chiroptical Redox Switches. Inorganic Chemistry, https://doi.org/10.1021/acs.inorgchem.1c01379

The synthesis and photophysical and chiroptical properties of novel aza[n]helicenes (6a–d, 10a,b, n = 4–7) substituted with one or two 2-pyridyl groups are described. The preparation was performed via an adapted Mallory reaction using aromatic imines... Read More about Enantioenriched Ruthenium-Tris-Bipyridine Complexes Bearing One Helical Bipyridine Ligand: Access to Fused Multihelicenic Systems and Chiroptical Redox Switches.

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., 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.