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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.

Cyclometallated Platinum(II) Complexes Featuring an Unusual, C^N‐Coordinating Pyridyl‐pyridylidene Ligand and L X Coligands: Synthesis, Structures and Dual Luminescence Behavior (2023)
Journal Article
Montagu, J., Gontard, G., Williams, J. A. G., & Moussa, J. (2023). Cyclometallated Platinum(II) Complexes Featuring an Unusual, C^N‐Coordinating Pyridyl‐pyridylidene Ligand and L X Coligands: Synthesis, Structures and Dual Luminescence Behavior. European Journal of Inorganic Chemistry, 26(32), Article e202300487. https://doi.org/10.1002/ejic.202300487

Thanks to an unusual protodemethylation reaction, a series of luminescent cyclometallated platinum(II) complexes can be prepared, which incorporate a rare NC-chelating, pyridyl-pyridylidene ligand, in combination with OO-coordinating acetylacetonate... Read More about Cyclometallated Platinum(II) Complexes Featuring an Unusual, C^N‐Coordinating Pyridyl‐pyridylidene Ligand and L X Coligands: Synthesis, Structures and Dual Luminescence Behavior.

Platinum(II) Complexes of Nonsymmetrical NCN-Coordinating Ligands: Unimolecular and Excimeric Luminescence Properties and Comparison with Symmetrical Analogues (2023)
Journal Article
Salthouse, R. J., Sil, A., Gildea, L. F., Yufit, D. S., & Williams, J. A. G. (2023). Platinum(II) Complexes of Nonsymmetrical NCN-Coordinating Ligands: Unimolecular and Excimeric Luminescence Properties and Comparison with Symmetrical Analogues. Inorganic Chemistry, 62(31), 12356-12371. https://doi.org/10.1021/acs.inorgchem.3c01439

A series of seven new platinum(II) complexes PtLnCl have been prepared, where Ln is an NCN-coordinating ligand comprising a benzene ring 1,3-disubstituted with two different azaheterocycles. In PtL1–5Cl, one heterocycle is a simple pyridine ring, whi... Read More about Platinum(II) Complexes of Nonsymmetrical NCN-Coordinating Ligands: Unimolecular and Excimeric Luminescence Properties and Comparison with Symmetrical Analogues.

Enantiopure cycloplatinated pentahelicenic N-heterocyclic carbenic complexes that display long-lived circularly polarized phosphorescence (2023)
Journal Article
Kundu, D., del Rio, N., Cordier, M., Vanthuyne, N., Puttock, E. V., Meskers, S. C. J., …Crassous, J. (2023). Enantiopure cycloplatinated pentahelicenic N-heterocyclic carbenic complexes that display long-lived circularly polarized phosphorescence. Dalton Transactions, 52(19), 6484-6493. https://doi.org/10.1039/d3dt00577a

The preparation of the first enantiopure cycloplatinated complexes bearing a bidentate, helicenic N-heterocyclic carbene and a diketonate ancillary ligand is presented, along with their structural and spectroscopic characterization based on both expe... Read More about Enantiopure cycloplatinated pentahelicenic N-heterocyclic carbenic complexes that display long-lived circularly polarized phosphorescence.

Modulation of chiroptical and photophysical properties in helicenic rhenium(I) systems: the use of an N‐(aza[6]helicenyl)‐NHC ligand (2023)
Journal Article
Gauthier, E. S., Abella, L., Caytan, E., Roisnel, T., Vanthuyne, N., Favereau, L., …Crassous, J. (2023). Modulation of chiroptical and photophysical properties in helicenic rhenium(I) systems: the use of an N‐(aza[6]helicenyl)‐NHC ligand. Chemistry - A European Journal, 29(21), Article 202203477. https://doi.org/10.1002/chem.202203477

The photophysical and chiroptical properties of a novel, chiral helicene-NHC−Re(I) complex bearing an N-(aza[6]helicenyl)-benzimidazolylidene ligand are described, showing its ability to emit yellow circularly polarized luminescence. A comparative an... Read More about Modulation of chiroptical and photophysical properties in helicenic rhenium(I) systems: the use of an N‐(aza[6]helicenyl)‐NHC ligand.

Platinum(IV) Complexes with Tridentate, NNC-Coordinating Ligands: Synthesis, Structures, and Luminescence (2023)
Journal Article
Dikova, Y. M., Yufit, D. S., & Williams, J. G. (2023). Platinum(IV) Complexes with Tridentate, NNC-Coordinating Ligands: Synthesis, Structures, and Luminescence. Inorganic Chemistry, 62(4), 1306-1322. https://doi.org/10.1021/acs.inorgchem.2c04116

Platinum(II) complexes of NNC-cyclometalating ligands based on 6-phenyl-2,2′-bipyridine (HL1) have been widely investigated for their luminescence properties. We describe how PtL1Cl and five analogues with differently substituted aryl rings, PtL2–6Cl... Read More about Platinum(IV) Complexes with Tridentate, NNC-Coordinating Ligands: Synthesis, Structures, and Luminescence.

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.

Yellow-Emitting, Pseudo-Octahedral Zinc Complexes of Benzannulated N^N^O Pincer-Type Ligands (2022)
Journal Article
Lozada, I. B., Braun, J. D., Williams, J. G., & Herbert, D. E. (2022). Yellow-Emitting, Pseudo-Octahedral Zinc Complexes of Benzannulated N^N^O Pincer-Type Ligands. Inorganic Chemistry, 61(44), 17568-17578. https://doi.org/10.1021/acs.inorgchem.2c02585

A series of yellow-emitting, pseudo-octahedral Zn(II) complexes supported by monoanionic, tridentate acetylacetone-derived N^N–^O ligands incorporating phenanthridine (benzo[c]quinoline) units is presented. These species emit weakly in solution but e... Read More about Yellow-Emitting, Pseudo-Octahedral Zinc Complexes of Benzannulated N^N^O Pincer-Type Ligands.

Helicenic N-heterocyclic carbene copper(I) complex displaying circularly polarized blue fluorescence (2022)
Journal Article
Crassous, J., Gauthier, E. S., Kaczmarczyk, D., Fré, S. D., Favereau, L., Caytan, E., …Srebro-Hooper, M. (2022). Helicenic N-heterocyclic carbene copper(I) complex displaying circularly polarized blue fluorescence. Dalton Transactions, 51(40), 15571-15578. https://doi.org/10.1039/d2dt01925f

Enantiopure copper(I) chloride complexes bearing a monodentate N-(carbo[6]helicenyl)-NHC ligand have been prepared and characterized experimentally and computationally. Their high stability enables the stereochemistry to be probed by X-ray crystallog... Read More about Helicenic N-heterocyclic carbene copper(I) complex displaying circularly polarized blue fluorescence.

Synthesis and Coordination Chemistry of a Benzannulated Bipyridine: 6,6′-Biphenanthridine (2022)
Journal Article
Nemez, D. B., Lozada, I. B., Braun, J. D., Williams, J. G., & Herbert, D. E. (2022). Synthesis and Coordination Chemistry of a Benzannulated Bipyridine: 6,6′-Biphenanthridine. Inorganic Chemistry, 61(34), 13386-13398. https://doi.org/10.1021/acs.inorgchem.2c01514

The synthesis, characterization, and coordination chemistry of a doubly π-extended bipyridine analogue, 6,6′-biphenanthridine (biphe), is presented. The structure of the molecule has been determined in the solid state by X-ray diffraction, showing an... Read More about Synthesis and Coordination Chemistry of a Benzannulated Bipyridine: 6,6′-Biphenanthridine.

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., …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.

Synthesis, Mesomorphism, Photophysics, and Device Properties of Liquid-Crystalline Pincer Complexes of Gold(III) Containing Semiperfluorinated Chains (2022)
Journal Article
Parker, R. R., Stracey, R. F., McEllin, A. J., Chen, X., Wang, Y., Williams, J. G., …Bruce, D. W. (2022). Synthesis, Mesomorphism, Photophysics, and Device Properties of Liquid-Crystalline Pincer Complexes of Gold(III) Containing Semiperfluorinated Chains. ACS Omega, 7(28), 24903-24917. https://doi.org/10.1021/acsomega.2c03669

Gold(III) complexes of C∧N∧C-coordinating 2,6-diphenylpyridine pincer ligands with arylacetylide co-ligands are known triplet emitters at room temperature. We have reported previously that by functionalizing both the pincer ligand and the phenylacety... Read More about Synthesis, Mesomorphism, Photophysics, and Device Properties of Liquid-Crystalline Pincer Complexes of Gold(III) Containing Semiperfluorinated Chains.

Dual-emission luminescence thermometry using LaGaO3:Cr3+, Nd3+ phosphors (2022)
Journal Article
Mullins, A. L., Ćirić, A., Zekovic, I., Williams, J. G., Dramicanin, M., & Evans, I. R. (2022). Dual-emission luminescence thermometry using LaGaO3:Cr3+, Nd3+ phosphors. Journal of Materials Chemistry C Materials for optical and electronic devices, 10(28), 10396-10403. https://doi.org/10.1039/d2tc02011d

A series of La1-xGa0.99O3: Cr0.01, Ndx phosphors (where x = 0.005, 0.01, 0.02) for luminescence thermometry have been synthesised by a solid-state method, structurally characterised using powder X-ray diffraction data, and investigated by ambient and... Read More about Dual-emission luminescence thermometry using LaGaO3:Cr3+, Nd3+ phosphors.

Double-deconvolution method for the separation of thermalised emissions from chromium-doped lanthanum gallate and its potential in luminescence-based thermometry (2022)
Journal Article
Mullins, A. L., Ćirić, A., Ristić, Z., Williams, J. G., Radosavljević Evans, I., & Dramićanin, M. D. (2022). Double-deconvolution method for the separation of thermalised emissions from chromium-doped lanthanum gallate and its potential in luminescence-based thermometry. Journal of Luminescence, 246, https://doi.org/10.1016/j.jlumin.2022.118847

A series of LaGa1–xO3:Cr3+x phosphors (x = 0.002, 0.005, 0.01, 0.02, 0.04) were synthesised by solid-state reaction and structurally characterised by Rietveld refinement from powder X-ray diffraction data. Amongst the five compounds, that with x = 0.... Read More about Double-deconvolution method for the separation of thermalised emissions from chromium-doped lanthanum gallate and its potential in luminescence-based thermometry.

Donor-Acceptor Boron-Ketoiminate Complexes with Pendent N-Heterocyclic Arms: Switched-on Luminescence through N-Heterocycle Methylation (2021)
Journal Article
Lozada, I. B., Ortiz, R. J., Braun, J. D., Williams, J. G., & Herbert, D. E. (2022). Donor-Acceptor Boron-Ketoiminate Complexes with Pendent N-Heterocyclic Arms: Switched-on Luminescence through N-Heterocycle Methylation. Journal of Organic Chemistry, 87(1), 184-196. https://doi.org/10.1021/acs.joc.1c02138

A series of intramolecular, donor-stabilized BF2 complexes supported by phenanthridinyl-decorated, β-ketoiminate chelating ligand scaffolds is described, along with their characterization by spectroscopy and X-ray diffraction. In solution, the relati... Read More about Donor-Acceptor Boron-Ketoiminate Complexes with Pendent N-Heterocyclic Arms: Switched-on Luminescence through N-Heterocycle Methylation.

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.

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.

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.

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.

Triskelion-shaped iridium-helicene NHC complex (2021)
Journal Article
Crassous, J., Gauthier, E. S., Hellou, N., Caytan, E., Fré, S. D., Vanthuyne, N., …Srebro-Hooper, M. (2021). Triskelion-shaped iridium-helicene NHC complex. Inorganic Chemistry Frontiers, 8(16), 3916-3925. https://doi.org/10.1039/d1qi00527h

Enantiopure tris-helicenic chiral-at-iridium complexes have been prepared, constituting the first examples of organometallic metal-tris-helicenes. They have the mer- or fac-Ir(C^C:)3 form, where (C^C:) is an N-heterocyclic carbene ligand N-substitute... Read More about Triskelion-shaped iridium-helicene NHC complex.

Narrow-band red phosphors of high colour purity based on Eu3+-activated apatite-type Gd9.33(SiO4)6O2 (2021)
Journal Article
Rodriguez-Garcia, M. M., Ćirić, A., Ristić, Z., Williams, J. G., Dramicanin, M., & Evans, I. R. (2021). Narrow-band red phosphors of high colour purity based on Eu3+-activated apatite-type Gd9.33(SiO4)6O2. Journal of Materials Chemistry C Materials for optical and electronic devices, 9(23), 7474-7484. https://doi.org/10.1039/d1tc01330k

A series of new red phosphors based on apatite-type gadolinium silicate host, Gd9.33−xEux(SiO4)6O2 (0.03 < x < 1.87), have been synthesised and analysed. The phosphors show excellent chemical and thermal stability, losing only 10% of their emission i... Read More about Narrow-band red phosphors of high colour purity based on Eu3+-activated apatite-type Gd9.33(SiO4)6O2.

Platinum(II) Complexes of Tridentate ‐Coordinating Ligands Based on Imides, Amides, and Hydrazides: Synthesis and Luminescence Properties (2020)
Journal Article
Puttock, E. V., Sturala, J., Kistemaker, J. C., & Williams, J. G. (2021). Platinum(II) Complexes of Tridentate ‐Coordinating Ligands Based on Imides, Amides, and Hydrazides: Synthesis and Luminescence Properties. European Journal of Inorganic Chemistry, 2021(4), 335-347. https://doi.org/10.1002/ejic.202000879

Five Pt(II) complexes are described in which the metal ion is bound to anionic urn:x-wiley:14341948:media:ejic202000879:ejic202000879-math-0003 ‐coordinating ligands. The central, deprotonated N atom is derived from an imide Ar−C(=O)−NH−C(=O)−Ar {PtL... Read More about Platinum(II) Complexes of Tridentate ‐Coordinating Ligands Based on Imides, Amides, and Hydrazides: Synthesis and Luminescence Properties.

Extended ligand conjugation and dinuclearity as a route to efficient platinum-based near-infrared (NIR) triplet emitters and solution-processed NIR-OLEDs (2020)
Journal Article
Shafikov, M. Z., Pander, P., Zaytsev, A. V., Daniels, R., Martinscroft, R., Dias, F. B., …Kozhevnikov, V. N. (2021). Extended ligand conjugation and dinuclearity as a route to efficient platinum-based near-infrared (NIR) triplet emitters and solution-processed NIR-OLEDs. Journal of Materials Chemistry C Materials for optical and electronic devices, 9(1), 127-135. https://doi.org/10.1039/d0tc04881j

Near infrared (NIR) emission from molecular materials is typically targeted by using more extended conjugated systems compared to visible-emitting materials. But efficiencies usually fall off due to the combined effects of increasing non-radiative an... Read More about Extended ligand conjugation and dinuclearity as a route to efficient platinum-based near-infrared (NIR) triplet emitters and solution-processed NIR-OLEDs.

Designing magnesium-selective ligands using coordination chemistry principles (2020)
Journal Article
Walter, E. R., Hogg, C., Parker, D., & Gareth Williams, J. (2021). Designing magnesium-selective ligands using coordination chemistry principles. Coordination Chemistry Reviews, 428, Article 213622. https://doi.org/10.1016/j.ccr.2020.213622

Progress in the selective binding and detection of magnesium ions has been slower than other biologically important divalent metal ions like calcium and zinc. The most widely used ligands for Mg2+ are by no means optimal, as they are not selective fo... Read More about Designing magnesium-selective ligands using coordination chemistry principles.

Synthesis, structure, photophysical and chiroptical properties of dinuclear rhenium complexes with a bridging helicene‐bis‐bipyridine ligand (2020)
Journal Article
Crassous, J., Saleh, N., Kundu, D., Vanthuyne, N., Olesiak, J., Pniakowska, A., …Autschbach, J. (2020). Synthesis, structure, photophysical and chiroptical properties of dinuclear rhenium complexes with a bridging helicene‐bis‐bipyridine ligand. ChemPlusChem, 85(11), 2446-2454. https://doi.org/10.1002/cplu.202000559

By attaching pyridine groups to a diaza[6]helicene, a helical, bis‐ditopic, bis‐N^N‐coordinating ligand can be accessed. Dinuclear rhenium complexes featuring this bridging ligand, of the form [{Re(CO)3Cl}2(N^N–N^N)], have been prepared and resolved... Read More about Synthesis, structure, photophysical and chiroptical properties of dinuclear rhenium complexes with a bridging helicene‐bis‐bipyridine ligand.

Deep-Red Luminescence from Platinum(II) Complexes of N^N–^N-Amido Ligands with Benzannulated N-Heterocyclic Donor Arms (2020)
Journal Article
Mandapati, P., Braun, J. D., Lozada, I. B., Williams, J. G., & Herbert, D. E. (2020). Deep-Red Luminescence from Platinum(II) Complexes of N^N–^N-Amido Ligands with Benzannulated N-Heterocyclic Donor Arms. Inorganic Chemistry, 59(17), 12504-12517. https://doi.org/10.1021/acs.inorgchem.0c01584

A synthetic methodology for accessing narrow-band, deep-red phosphorescence from mononuclear Pt(II) complexes is presented. These charge-neutral complexes have the general structure (N^N–^N)PtCl, in which the Pt(II) centers are supported by benzannul... Read More about Deep-Red Luminescence from Platinum(II) Complexes of N^N–^N-Amido Ligands with Benzannulated N-Heterocyclic Donor Arms.

Mono and dinuclear iridium(iii) complexes featuring bis-tridentate coordination and Schiff-base bridging ligands: the beneficial effect of a second metal ion on luminescence (2020)
Journal Article
Puttock, E. V., Sil, A., Yufit, D. S., & Williams, J. G. (2020). Mono and dinuclear iridium(iii) complexes featuring bis-tridentate coordination and Schiff-base bridging ligands: the beneficial effect of a second metal ion on luminescence. Dalton Transactions, 49(30), 10463-10476. https://doi.org/10.1039/d0dt01964j

The synthesis and photophysical properties of a set of iridium(III) complexes featuring tridentate N^N^O-coordinating ligands are described, of generic structure [Ir(N^C^N-dpyx)(N^N^O-Ln)]+ (n = 1 to 4) (dpyx = 1,3-dipyridyl-4,6-dimethylbenzene). The... Read More about Mono and dinuclear iridium(iii) complexes featuring bis-tridentate coordination and Schiff-base bridging ligands: the beneficial effect of a second metal ion on luminescence.

Long‐lived circularly‐polarized phosphorescence in helicene‐NHC‐rhenium(I) complexes: the influence of helicene, halogen and stereochemistry on emission properties (2020)
Journal Article
Crassous, J., Gauthier, E. S., Abella, L., Hellou, N., Darquié, B., Caytan, E., …Autschbach, J. (2020). Long‐lived circularly‐polarized phosphorescence in helicene‐NHC‐rhenium(I) complexes: the influence of helicene, halogen and stereochemistry on emission properties. Angewandte Chemie International Edition, 59(22), 8394-8400. https://doi.org/10.1002/anie.202002387

First enantiopure, chiral‐at‐rhenium complexes of the form fac ‐ReX(CO) 3 (:C^N) have been prepared, where:C^N is a helicene N‐heterocyclic carbene ligand and X = Cl or I. They have shown strong changes in the emission characteristics, notably strong... Read More about Long‐lived circularly‐polarized phosphorescence in helicene‐NHC‐rhenium(I) complexes: the influence of helicene, halogen and stereochemistry on emission properties.

Rotaxane Pt(II)-Complexes: Mechanical Bonding for Chemically Robust Luminophores and Stimuli Responsive Behaviour (2020)
Journal Article
Zhang, Z., Tizzard, G. J., Williams, J. G., & Goldup, S. (2020). Rotaxane Pt(II)-Complexes: Mechanical Bonding for Chemically Robust Luminophores and Stimuli Responsive Behaviour. Chemical Science, 7(11), 1839-1847. https://doi.org/10.1039/c9sc05507j

We report an approach to rotaxanes in which the metal ion of a cyclometallated PtII luminophore is embedded in the space created by the mechanical bond. Our results show that the interlocked ligand environment stabilises a normally labile PtII–triazo... Read More about Rotaxane Pt(II)-Complexes: Mechanical Bonding for Chemically Robust Luminophores and Stimuli Responsive Behaviour.

Luminescent Platinum(II) Complexes of N^N–^N Amido Ligands with Benzannulated N-Heterocyclic Donor Arms: Quinolines Offer Unexpectedly Deeper Red Phosphorescence than Phenanthridines (2019)
Journal Article
Mandapati, P., Braun, J. D., Killeen, C., Davis, R. L., Williams, J. G., & Herbert, D. E. (2019). Luminescent Platinum(II) Complexes of N^N–^N Amido Ligands with Benzannulated N-Heterocyclic Donor Arms: Quinolines Offer Unexpectedly Deeper Red Phosphorescence than Phenanthridines. Inorganic Chemistry, 58(21), 14808-14817. https://doi.org/10.1021/acs.inorgchem.9b02480

A platform for investigating the impact of π-extension in benzannulated, anionic pincer-type N^N–^N-coordinating amido ligands and their Pt(II) complexes is presented. Based on bis(8-quinolinyl)amine, symmetric and asymmetric proligands bearing quino... Read More about Luminescent Platinum(II) Complexes of N^N–^N Amido Ligands with Benzannulated N-Heterocyclic Donor Arms: Quinolines Offer Unexpectedly Deeper Red Phosphorescence than Phenanthridines.

A family of readily synthesised phosphorescent platinum(II) complexes based on tridentate N^N^O-coordinating Schiff-base ligands (2019)
Journal Article
Puttock, E., Fradgley, J., Yufit, D., & Williams, J. (2019). A family of readily synthesised phosphorescent platinum(II) complexes based on tridentate N^N^O-coordinating Schiff-base ligands. Dalton Transactions, 48(40), 15012-15028. https://doi.org/10.1039/c9dt03156a

The synthesis and photophysical properties of 22 platinum(II) complexes featuring N^N^O-coordinating ligands are described. The complexes have the form Pt(N^N^O-Ln)Cl (n = 1 to 20). The tridentate ligands comprise lateral pyridine and phenolate rings... Read More about A family of readily synthesised phosphorescent platinum(II) complexes based on tridentate N^N^O-coordinating Schiff-base ligands.

Fluorenylporphyrins functionalized by electrochromic ruthenium units as redox-triggered fluorescence switches (2019)
Journal Article
Zhang, X., Abid, S., Shi, L., Williams, J. G., Fox, M. A., Miomandre, F., …Paul-Roth, C. O. (2019). Fluorenylporphyrins functionalized by electrochromic ruthenium units as redox-triggered fluorescence switches. Dalton Transactions, 48(31), 11897-11911. https://doi.org/10.1039/c9dt02087j

Two dyads containing tris- and tetrakis-meso-fluorenyl-substituted porphyrin and ethynylruthenium units, 1 and 2, were investigated by emission spectro-electrochemical (SEC) methods for their potential use as fluorescence switches. The ruthenium grou... Read More about Fluorenylporphyrins functionalized by electrochromic ruthenium units as redox-triggered fluorescence switches.

Single-Phase White-Emitting Phosphors Based on Apatite-Type Gadolinium Silicate, Gd9.33(SiO4)6O2 Doped with Dy3+, Eu3+ and Tb3+ (2019)
Journal Article
Rodriguez-Garcia, M. M., Williams, J. G., & Evans, I. R. (2019). Single-Phase White-Emitting Phosphors Based on Apatite-Type Gadolinium Silicate, Gd9.33(SiO4)6O2 Doped with Dy3+, Eu3+ and Tb3+. Journal of Materials Chemistry C Materials for optical and electronic devices, 7(25), 7779-7787. https://doi.org/10.1039/c9tc02336d

Two series of new apatite-type silicate materials were synthesised and characterised with the aim of achieving white light emission from single-phase phosphors. The Gd9.33(SiO4)6O2 host was doped systematically with Dy3+, Tb3+ and Eu3+ to tune the em... Read More about Single-Phase White-Emitting Phosphors Based on Apatite-Type Gadolinium Silicate, Gd9.33(SiO4)6O2 Doped with Dy3+, Eu3+ and Tb3+.

A highly luminescent tetrahydrocurcumin Ir(III) complex with remarkable photoactivated anticancer activity (2019)
Journal Article
Dragonetti, C., Colombo, A., Fontani, M., Roberto, D., Williams, G., Scotto di Perrotolo, R., …Polo, S. (2019). A highly luminescent tetrahydrocurcumin Ir(III) complex with remarkable photoactivated anticancer activity. Chemistry - A European Journal, 25(33), 7948-7952. https://doi.org/10.1002/chem.201901527

Curcumin has chemopreventive properties against a variety of tumours, but it has poor bioavailability. Two new bis‐cyclometallated iridium(III) complexes have been prepared, featuring the natural product curcumin (CUR) or its reduced form, tetrahydro... Read More about A highly luminescent tetrahydrocurcumin Ir(III) complex with remarkable photoactivated anticancer activity.

Homoleptic platinum(ii) complexes with pyridyltriazole ligands: excimer-forming phosphorescent emitters for solution-processed OLEDs (2019)
Journal Article
Walden, M. T., Pander, P., Yufit, D. S., Dias, F. B., & Williams, J. G. (2019). Homoleptic platinum(ii) complexes with pyridyltriazole ligands: excimer-forming phosphorescent emitters for solution-processed OLEDs. Journal of Materials Chemistry C Materials for optical and electronic devices, 7(22), 6592--6606. https://doi.org/10.1039/c9tc00768g

Two new homoleptic platinum(II) complexes are reported that feature aryl-appended 5-(2-pyridyl)-1,2,4- triazole chelates acting as N^N ligating ions, PtL1 2 and PtL2 2. Readily prepared from easily accessible proligands, they offer good solubility in... Read More about Homoleptic platinum(ii) complexes with pyridyltriazole ligands: excimer-forming phosphorescent emitters for solution-processed OLEDs.

An enantiopure cyclometallated iridium complex displaying long-lived phosphorescence both in solution and in the solid state (2019)
Journal Article
Crassous, J., Macé, A., Hellou, N., Hammoud, J., Martin, C., Nasser, G., …Carboni, B. (2019). An enantiopure cyclometallated iridium complex displaying long-lived phosphorescence both in solution and in the solid state. Helvetica Chimica Acta, 102(4), https://doi.org/10.1002/hlca.201900044

A new enantiopure cyclometallated iridium complex bearing a [4]helicenic :C^C– and two :N^C– dfppy (2‐(2,4‐difluorophenyl)‐pyridyl) ligands was prepared. This complex revealed a long‐lived phosphorescence both in solution and in the solid state. Its... Read More about An enantiopure cyclometallated iridium complex displaying long-lived phosphorescence both in solution and in the solid state.

Dinuclear Design of a Pt(II) Complex Affording Highly Efficient Red Emission: Photophysical Properties and Application in Solution-Processible OLEDs (2019)
Journal Article
Shafikov, M. Z., Daniels, R., Pander, P., Dias, F. B., Williams, J. G., & Kozhevnikov, V. N. (2019). Dinuclear Design of a Pt(II) Complex Affording Highly Efficient Red Emission: Photophysical Properties and Application in Solution-Processible OLEDs. ACS Applied Materials and Interfaces, 11(8), 8182-8193. https://doi.org/10.1021/acsami.8b18928

The light-emitting efficiency of luminescent materials is invariably compromised on moving to the red and near-infrared regions of the spectrum due to the transfer of electronic excited-state energy into vibrations. We describe how this undesirable “... Read More about Dinuclear Design of a Pt(II) Complex Affording Highly Efficient Red Emission: Photophysical Properties and Application in Solution-Processible OLEDs.

Exploiting synergy between ligand design and counterion interactions to boost room temperature phosphorescence from Cu(i) compounds (2019)
Journal Article
Mondal, R., Lozada, I. B., Davis, R. L., Williams, J. G., & Herbert, D. E. (2019). Exploiting synergy between ligand design and counterion interactions to boost room temperature phosphorescence from Cu(i) compounds. Journal of Materials Chemistry C Materials for optical and electronic devices, 7(13), 3772-3778. https://doi.org/10.1039/c9tc00040b

The structural and photophysical properties of three sets of luminescent copper complexes of the form [(P^N)2Cu]X are presented. Here, P^N represents a bidentate ligand based on phenanthridine (3,4-benzoquinoline) incorporating a phosphine unit at th... Read More about Exploiting synergy between ligand design and counterion interactions to boost room temperature phosphorescence from Cu(i) compounds.

Quantification of energy transfer in bimetallic Pt(ii)–Ln(iii) complexes featuring an N^C^N-cyclometallating ligand (2019)
Journal Article
Etchells, I. M., Pfrunder, M. C., Williams, J. G., & Moore, E. G. (2019). Quantification of energy transfer in bimetallic Pt(ii)–Ln(iii) complexes featuring an N^C^N-cyclometallating ligand. Dalton Transactions, 48(6), 2142-2149. https://doi.org/10.1039/c8dt04640a

Cyclometallated Pt(II) complexes with arylpolypyridyl ligands have impressive photophysical properties (high quantum yields, long lifetimes and tuneable emission) which can be readily tuned by modification of the organic ligand. Despite this, few exa... Read More about Quantification of energy transfer in bimetallic Pt(ii)–Ln(iii) complexes featuring an N^C^N-cyclometallating ligand.

Synthesis, Mesomorphism, and Photophysics of 2,5-Bis(dodecyloxyphenyl)pyridine Complexes of Platinum(IV) (2018)
Journal Article
Parker, R. R., Sarju, J. P., Whitwood, A. C., Williams, J. G., Lynam, J. M., & Bruce, D. W. (2018). Synthesis, Mesomorphism, and Photophysics of 2,5-Bis(dodecyloxyphenyl)pyridine Complexes of Platinum(IV). Chemistry - A European Journal, 24(71), 19010-19023. https://doi.org/10.1002/chem.201804026

It has been shown for the first time that the PtIV complex cis‐[Pt(N^C‐tolpy)2Cl2] (tolpy=2‐(4‐tolyl)pyridinyl) can be prepared in a one‐pot reaction from K2[PtCl4], although analogous complexes containing 2,5‐bis(4‐dodecyloxyphenyl)pyridine (=HL) co... Read More about Synthesis, Mesomorphism, and Photophysics of 2,5-Bis(dodecyloxyphenyl)pyridine Complexes of Platinum(IV).

The luminescence properties of multinuclear platinum complexes (2018)
Journal Article
Puttock, E. V., Walden, M. T., & Williams, J. G. (2018). The luminescence properties of multinuclear platinum complexes. Coordination Chemistry Reviews, 367, 127-162. https://doi.org/10.1016/j.ccr.2018.04.003

Platinum(II) complexes featuring conjugated aromatic ligands are widely studied in the context of luminescence. Many such compounds have been discovered that display intense phosphorescence from triplet excited states, offering potential applicabilit... Read More about The luminescence properties of multinuclear platinum complexes.

Site-Selective Benzannulation of N-Heterocycles in Bidentate Ligands Leads to Blue-Shifted Emission from [(P^N)Cu]2(μ-X)2 Dimers (2018)
Journal Article
Mondal, R., Lozada, I. B., Davis, R. L., Williams, J. G., & Herbert, D. E. (2018). Site-Selective Benzannulation of N-Heterocycles in Bidentate Ligands Leads to Blue-Shifted Emission from [(P^N)Cu]2(μ-X)2 Dimers. Inorganic Chemistry, 57(9), 4966-4978. https://doi.org/10.1021/acs.inorgchem.7b03223

Benzannulated bidentate pyridine/phosphine (P^N) ligands bearing quinoline or phenanthridine (3,4-benzoquinoline) units have been prepared, along with their halide-bridged, dimeric Cu(I) complexes of the form [(P^N)Cu]2(μ-X)2. The copper complexes ar... Read More about Site-Selective Benzannulation of N-Heterocycles in Bidentate Ligands Leads to Blue-Shifted Emission from [(P^N)Cu]2(μ-X)2 Dimers.

On the antibacterial activity of azacarboxylate ligands: lowered metal ion affinities for bis-amide derivatives of EDTA do not mean reduced activity (2018)
Journal Article
Mulla, R., Beecroft, M., Pal, R., Aguilar, J., Pitarch-Jarque, J., García‐España, E., …Williams, J. (2018). On the antibacterial activity of azacarboxylate ligands: lowered metal ion affinities for bis-amide derivatives of EDTA do not mean reduced activity. Chemistry - A European Journal, 24(28), 7137-7148. https://doi.org/10.1002/chem.201800026

EDTA is widely used as an inhibitor of bacterial growth, affecting the uptake and control of metal ions by microorganisms. We describe the synthesis and characterisation of two symmetrical bis‐amide derivatives of EDTA, featuring glycyl or pyridyl su... Read More about On the antibacterial activity of azacarboxylate ligands: lowered metal ion affinities for bis-amide derivatives of EDTA do not mean reduced activity.

APTRA-based luminescent lanthanide complexes displaying enhanced selectivity for Mg2+ (2018)
Journal Article
Parker, D., Walter, E., & Williams, J. (2018). APTRA-based luminescent lanthanide complexes displaying enhanced selectivity for Mg2+. Chemistry - A European Journal, 24(30), 7724-7733. https://doi.org/10.1002/chem.201800745

A series of three europium(III) complexes has been created in which an APTRA moiety has been integrated into the sensitising chromophore (APTRA = o‐aminophenol‐N,N,N‐triacetate). The constitutionally isomeric complexes EuL1 and EuL2 feature the APTRA... Read More about APTRA-based luminescent lanthanide complexes displaying enhanced selectivity for Mg2+.

Tuning Mg2+ selectivity: comparative analysis of the photophysical properties of four fluorescent probes with an alkynyl-naphthalene fluorophore (2018)
Journal Article
Parker, D., Williams, J., & Walter, E. (2018). Tuning Mg2+ selectivity: comparative analysis of the photophysical properties of four fluorescent probes with an alkynyl-naphthalene fluorophore. Chemistry - A European Journal, 24(24), 6432-6441. https://doi.org/10.1002/chem.201800013

Four alkynyl‐1‐naphthyl fluorophores have been synthesised with tri‐ or pentadentate ligating groups suited to the binding of magnesium. Their photophysical and binding properties for magnesium, calcium and zinc ions have been assessed using absorpti... Read More about Tuning Mg2+ selectivity: comparative analysis of the photophysical properties of four fluorescent probes with an alkynyl-naphthalene fluorophore.

Enhanced selectivity for Mg2+ with a phosphinate-based chelate: APDAP versus APTRA (2018)
Journal Article
Walter, E. R., Fox, M. A., Parker, D., & Williams, J. G. (2018). Enhanced selectivity for Mg2+ with a phosphinate-based chelate: APDAP versus APTRA. Dalton Transactions, 47(6), 1755-1763. https://doi.org/10.1039/c7dt04698g

o-Aminophenol-N,N,O-triacetate, known as APTRA, is one of the most well-established ligands for targeting magnesium ions but, like other aminocarboxylate ligands, it binds Ca2+ much more strongly than Mg2+. The synthesis of an O-phosphinate analogue... Read More about Enhanced selectivity for Mg2+ with a phosphinate-based chelate: APDAP versus APTRA.

Solvent polarity and oxygen sensitivity, rather than viscosity, determine lifetimes of biaryl-sensitised terbium luminescence (2017)
Journal Article
Walter, E. R., Williams, J. G., & Parker, D. (2017). Solvent polarity and oxygen sensitivity, rather than viscosity, determine lifetimes of biaryl-sensitised terbium luminescence. Chemical Communications, 53(100), 13344-13347. https://doi.org/10.1039/c7cc08361k

In a macrocyclic terbium complex incorporating a biaryl sensitiser, the observed variation of emission lifetime is shown to be determined by the solubility of oxygen in the solvent system and the relative energy of the chromophore excited state, rath... Read More about Solvent polarity and oxygen sensitivity, rather than viscosity, determine lifetimes of biaryl-sensitised terbium luminescence.

Monothiatruxene: a new versatile core for functional materials (2017)
Journal Article
Maciejczyk, M. R., Williams, J. G., Robertson, N., & Pietraszkiewicz, M. (2017). Monothiatruxene: a new versatile core for functional materials. RSC Advances, 7(78), 49532-49535. https://doi.org/10.1039/c7ra07671a

A truxene molecule incorporating a sulfur atom at one of the three bridgehead positions has been prepared through an efficient route, together with its oxidized analogue (featuring an SO2 unit) and brominated derivatives. The photophysical, electroch... Read More about Monothiatruxene: a new versatile core for functional materials.

Photon Funnels for One-Way Energy Transfer: Multimetallic Assemblies Incorporating Cyclometallated Iridium or Rhodium Units Accessed by Sequential Cross-Coupling and Bromination (2017)
Journal Article
Knuckey, K. J., & Williams, J. G. (2017). Photon Funnels for One-Way Energy Transfer: Multimetallic Assemblies Incorporating Cyclometallated Iridium or Rhodium Units Accessed by Sequential Cross-Coupling and Bromination. European Journal of Inorganic Chemistry, 2017(44), 5205-5214. https://doi.org/10.1002/ejic.201701020

The generation of multimetallic assemblies is a widely explored theme, owing to the relevance of controlling energy and electron transfer between metal centres to many fields of contemporary importance. Boronic acid substituted coordination and organ... Read More about Photon Funnels for One-Way Energy Transfer: Multimetallic Assemblies Incorporating Cyclometallated Iridium or Rhodium Units Accessed by Sequential Cross-Coupling and Bromination.

Strategies for the synthesis of HBGl3, a glutamic acid derived ligand bearing phenolic and azacarboxylate donor groups at the nitrogen atom (2017)
Journal Article
Mulla, R. S., Walden, M. T., Yufit, D. S., Desa, T., Lurie-Luke, E., & Williams, J. G. (2017). Strategies for the synthesis of HBGl3, a glutamic acid derived ligand bearing phenolic and azacarboxylate donor groups at the nitrogen atom. Tetrahedron, 73(45), 6410-6420. https://doi.org/10.1016/j.tet.2017.09.032

The development of a route applicable to the preparation of acyclic glutamic acid-based chelating ligands bearing two different auxiliary donor groups linked to the nitrogen atom by methylene spacers is described and applied to the synthesis of the n... Read More about Strategies for the synthesis of HBGl3, a glutamic acid derived ligand bearing phenolic and azacarboxylate donor groups at the nitrogen atom.

Enantiopure cycloiridiated complexes bearing a pentahelicenic N-heterocyclic carbene and displaying long-lived circularly-polarized phosphorescence (2017)
Journal Article
Crassous, J., Hellou, N., Srebro-Hooper, M., Favereau, L., Zinna, F., Caytan, E., …Autschbach, J. (2017). Enantiopure cycloiridiated complexes bearing a pentahelicenic N-heterocyclic carbene and displaying long-lived circularly-polarized phosphorescence. Angewandte Chemie International Edition, 56(28), 8236-8239. https://doi.org/10.1002/anie.201704263

A fused pi-helical N-heterocyclic (NHC) system has been prepared and examined through its diastereoisomerically pure cycloiridiated complexes. The latter display light-green phosphorescence with i) unusually long lifetimes and ii) circular polarizati... Read More about Enantiopure cycloiridiated complexes bearing a pentahelicenic N-heterocyclic carbene and displaying long-lived circularly-polarized phosphorescence.

Monoamide Derivatives of EDTA Incorporating Pendent Carboxylates or Pyridyls: Synthesis, Metal Binding, and Crystal Structure of a Dinuclear Ca2+ Complex Featuring Bridging Na+ Ions (2017)
Journal Article
Mulla, R., Pitarch-Jarque, J., Garcia-Espana, E., Desa, T., Lurie-Luke, E., & Williams, J. (2017). Monoamide Derivatives of EDTA Incorporating Pendent Carboxylates or Pyridyls: Synthesis, Metal Binding, and Crystal Structure of a Dinuclear Ca2+ Complex Featuring Bridging Na+ Ions. ChemistrySelect, 2(18), 5045-5050. https://doi.org/10.1002/slct.201700995

EDTA is a powerful, cheap and widely-used chelating unit for a large range of metal ions. To link it covalently to other molecules, the formation of an amide bond using one of the carboxylates is an attractive and simple approach, even though it may... Read More about Monoamide Derivatives of EDTA Incorporating Pendent Carboxylates or Pyridyls: Synthesis, Metal Binding, and Crystal Structure of a Dinuclear Ca2+ Complex Featuring Bridging Na+ Ions.

Rigidly linking cyclometallated Ir(III) and Pt(II) centres: an efficient approach to strongly absorbing and highly phosphorescent red emitters (2017)
Journal Article
Turnbull, G., Williams, J., & Kozhevnikov, V. (2017). Rigidly linking cyclometallated Ir(III) and Pt(II) centres: an efficient approach to strongly absorbing and highly phosphorescent red emitters. Chemical Communications, 53(18), 2729-2732. https://doi.org/10.1039/c7cc00656j

The synthesis and photophysical properties of an unprecedented tetranuclear complex are described, in which a fac-tris-cyclometallated Ir(III) centre is rigidly connected to three cyclometallated Pt(II) centres. The complex absorbs strongly up to ∼60... Read More about Rigidly linking cyclometallated Ir(III) and Pt(II) centres: an efficient approach to strongly absorbing and highly phosphorescent red emitters.

Synthesis and Luminescence Properties of Cycloplatinated Complexes with a Chelating N∧C Pyridine-Derived N-Heterocyclic Carbene - Influence of 2,4,6-Triphenyl­phosphinine versus Triphenylphosphine (2016)
Journal Article
Moussa, J., Freeman, G. R., Williams, J. G., Chamoreau, L., Herson, P., & Amouri, H. (2016). Synthesis and Luminescence Properties of Cycloplatinated Complexes with a Chelating N∧C Pyridine-Derived N-Heterocyclic Carbene - Influence of 2,4,6-Triphenyl­phosphinine versus Triphenylphosphine. European Journal of Inorganic Chemistry, 2016(5), https://doi.org/10.1002/ejic.201500879

Tuning the dipolar second-order nonlinear optical properties of 5-π-delocalized-donor-1,3-di(2-pyridyl) benzenes, related cyclometallated platinum(II) complexes and methylated salts (2016)
Journal Article
Nisic, F., Cariati, E., Colombo, A., Dragonetti, C., Fantacci, S., Garoni, E., …Williams, J. (2017). Tuning the dipolar second-order nonlinear optical properties of 5-π-delocalized-donor-1,3-di(2-pyridyl) benzenes, related cyclometallated platinum(II) complexes and methylated salts. Dalton Transactions, 46(4), 1179-1185. https://doi.org/10.1039/c6dt04359c

The synthesis and characterization of three 5-π-delocalized-donor-1,3-di(2-pyridyl)benzenes is reported along with that of their related cyclometallated platinum(II) complexes and N,N-dimethylated iodide salts. The second-order nonlinear optical (NLO... Read More about Tuning the dipolar second-order nonlinear optical properties of 5-π-delocalized-donor-1,3-di(2-pyridyl) benzenes, related cyclometallated platinum(II) complexes and methylated salts.

Synthesis and Chiroptical Properties of Hexa-, Octa-, and Decaazaborahelicenes: Influence of Helicene Size and of the Number of Boron Atoms (2016)
Journal Article
Shen, C., Srebro-Hooper, M., Jean, M., Vanthuyne, N., Toupet, L., Williams, J., …Crassous, J. (2017). Synthesis and Chiroptical Properties of Hexa-, Octa-, and Decaazaborahelicenes: Influence of Helicene Size and of the Number of Boron Atoms. Chemistry - A European Journal, 23(2), 407-418. https://doi.org/10.1002/chem.201604398

Four members of a new class of cycloborylated hexa-, octa-, and deca-helicenes (1 a–d) have been prepared in enantiopure form, along with two cycloplatinated deca-helicenes (1 d′, 1 d1), further extending the family of cycloplatinated hexa- and octa-... Read More about Synthesis and Chiroptical Properties of Hexa-, Octa-, and Decaazaborahelicenes: Influence of Helicene Size and of the Number of Boron Atoms.

Metal Complexes for Two-Photon Photodynamic Therapy: A Cyclometallated Iridium Complex Induces Two-Photon Photosensitization of Cancer Cells under Near-IR Light (2016)
Journal Article
McKenzie, L., Sazanovich, I., Baggaley, E., Bonneau, M., Guerchais, V., Williams, J., …Bryant, H. (2017). Metal Complexes for Two-Photon Photodynamic Therapy: A Cyclometallated Iridium Complex Induces Two-Photon Photosensitization of Cancer Cells under Near-IR Light. Chemistry - A European Journal, 23(2), 234-238. https://doi.org/10.1002/chem.201604792

Photodynamic therapy (PDT) uses photosensitizers (PS) which only become cytotoxic upon light-irradiation. Transition-metal complexes are highly promising PS due to long excited-state lifetimes, and high photo-stabilities. However, these complexes usu... Read More about Metal Complexes for Two-Photon Photodynamic Therapy: A Cyclometallated Iridium Complex Induces Two-Photon Photosensitization of Cancer Cells under Near-IR Light.

New N^C^N-coordinated Pd(ii) and Pt(ii) complexes of a tridentate N-heterocyclic carbene ligand featuring a 6-membered central ring: synthesis, structures and luminescence (2016)
Journal Article
Moussa, J., Haddouche, K., Chamoreau, L., Amouri, H., & Williams, J. (2016). New N^C^N-coordinated Pd(ii) and Pt(ii) complexes of a tridentate N-heterocyclic carbene ligand featuring a 6-membered central ring: synthesis, structures and luminescence. Dalton Transactions, 45(32), https://doi.org/10.1039/c6dt02415g

We describe Pd(II) and Pt(II) complexes of an N^C^N-coordinating pincer-like ligand featuring two lateral pyridine rings and a 6-membered carbene core. Their crystal structures display 1-dimensional chains with short π–π and M(II)⋯M(II) interactions.... Read More about New N^C^N-coordinated Pd(ii) and Pt(ii) complexes of a tridentate N-heterocyclic carbene ligand featuring a 6-membered central ring: synthesis, structures and luminescence.

Conformational changes and chiroptical switching of enantiopure bis-helicenic terpyridine upon Zn2+binding (2016)
Journal Article
Isla, H., Srebro-Hooper, M., Jean, M., Vanthuyne, N., Roisnel, T., Lunkley, J. L., …Crassous, J. (2016). Conformational changes and chiroptical switching of enantiopure bis-helicenic terpyridine upon Zn2+binding. Chemical Communications, 52(35), 5932-5935. https://doi.org/10.1039/c6cc01748g

The molecular conformation of a bis-helicenic terpyridine system is strongly modified upon binding to Zn(II) ion, a process that is accompanied by large changes in the optical and chiroptical properties. This system affords a new type of helicene-bas... Read More about Conformational changes and chiroptical switching of enantiopure bis-helicenic terpyridine upon Zn2+binding.

Bimetallic Gold(I) Complexes with Ethynyl-Helicene and Bis-Phosphole Ligands: Understanding the Role of Aurophilic Interactions in their Chiroptical Properties (2016)
Journal Article
El Sayed Moussa, M., Chen, H., Wang, Z., Srebro-Hooper, M., Vanthuyne, N., Chevance, S., …Crassous, J. (2016). Bimetallic Gold(I) Complexes with Ethynyl-Helicene and Bis-Phosphole Ligands: Understanding the Role of Aurophilic Interactions in their Chiroptical Properties. Chemistry - A European Journal, 22(17), 6075-6086. https://doi.org/10.1002/chem.201600126

Monometallic gold(I)-alkynyl-helicene complexes (1 a,b) and bimetallic gold(I)-alkynyl-helicene architectures featuring the presence (2 a,b) or absence (3 a,b) of aurophilic intramolecular interactions were prepared by using different types of phosph... Read More about Bimetallic Gold(I) Complexes with Ethynyl-Helicene and Bis-Phosphole Ligands: Understanding the Role of Aurophilic Interactions in their Chiroptical Properties.

When two are better than one: bright phosphorescence from non-stereogenic dinuclear iridium(III) complexes (2016)
Journal Article
Daniels, R., Culham, S., Hunter, M., Durrant, M., Probert, M., Clegg, W., …Kozhevnikov, V. (2016). When two are better than one: bright phosphorescence from non-stereogenic dinuclear iridium(III) complexes. Dalton Transactions, 45(16), 6949-6962. https://doi.org/10.1039/c6dt00881j

A new family of eight dinuclear iridium(III) complexes has been prepared, featuring 4,6-diarylpyrimidines Ly as bis-N^C-coordinating bridging ligands. The metal ions are also coordinated by a terminal N^C^N-cyclometallating ligand LX based on 1,3-di(... Read More about When two are better than one: bright phosphorescence from non-stereogenic dinuclear iridium(III) complexes.

Pressure-induced variations of MLCT and ligand-centered luminescence spectra in square-planar platinum(II) complexes (2016)
Journal Article
Rodrigue-Witchel, A., Rochester, D. L., Zhao, S., Lavelle, K. B., Williams, J. G., Wang, S., …Reber, C. (2016). Pressure-induced variations of MLCT and ligand-centered luminescence spectra in square-planar platinum(II) complexes. Polyhedron, 108, 151-155. https://doi.org/10.1016/j.poly.2015.12.011

Solid-state luminescence spectra of five crystalline platinum(II) complexes at variable pressure and temperature are presented and compared. Maxima occur between 14 000 cm−1 and 15 600 cm−1 (approximately 700–640 nm) at ambient temperature and pressu... Read More about Pressure-induced variations of MLCT and ligand-centered luminescence spectra in square-planar platinum(II) complexes.

Acid/base-triggered switching of circularly polarized luminescence and electronic circular dichroism in organic and organometallic helicenes (2014)
Journal Article
Saleh, S., Moore, B., Srebro, M., Vanthuyne, N., Toupet, L., Williams, J., …Crassous, C. (2015). Acid/base-triggered switching of circularly polarized luminescence and electronic circular dichroism in organic and organometallic helicenes. Chemistry - A European Journal, 21(4), 1673-1681. https://doi.org/10.1002/chem.201405176

Electronic circular dichroism and circularly polarized luminescence acid/base switching activity has been demonstrated in helicene-bipyridine proligand 1 a and in its “rollover” cycloplatinated derivative 2 a. Whereas proligand 1 a displays a strong... Read More about Acid/base-triggered switching of circularly polarized luminescence and electronic circular dichroism in organic and organometallic helicenes.

Time-resolved emission imaging microscopy using phosphorescent metal complexes: taking FLIM and PLIM to new lengths (2014)
Journal Article
Baggaley, E., Weinstein, J., & Williams, J. (2014). Time-resolved emission imaging microscopy using phosphorescent metal complexes: taking FLIM and PLIM to new lengths. Structure and bonding, https://doi.org/10.1007/430_2014_168

Luminescent metal complexes are increasingly being investigated as emissive probes and sensors for cell imaging using what is traditionally termed fluorescence microscopy. The nature of the emission in the case of second- and third-row metal complexe... Read More about Time-resolved emission imaging microscopy using phosphorescent metal complexes: taking FLIM and PLIM to new lengths.

A heterotrimetallic Ir(III), Au(III) and Pt(II) complex incorporating cyclometallating bi- and tridentate ligands : simultaneous emission from different luminescent metal centres leads to broad-band light emission (2014)
Journal Article
Muñoz-Rodríguez, R., Buñuel, E., Fuentes, N., Williams, J., & Cárdenas, D. (2015). A heterotrimetallic Ir(III), Au(III) and Pt(II) complex incorporating cyclometallating bi- and tridentate ligands : simultaneous emission from different luminescent metal centres leads to broad-band light emission. Dalton Transactions, 44(18), 8394-8405. https://doi.org/10.1039/c4dt02761b

Di- and tri-nuclear metal complexes incorporating gold(III), iridium(III) and platinum(II) units linked via a 1,3,5-triethynylbenzene core are reported, together with the corresponding mononuclear complexes as models. The gold(III) and platinum(II) u... Read More about A heterotrimetallic Ir(III), Au(III) and Pt(II) complex incorporating cyclometallating bi- and tridentate ligands : simultaneous emission from different luminescent metal centres leads to broad-band light emission.

Platinum(II) Complexes of N^C^N‑Coordinating 1,3-Bis(2-pyridyl)benzene Ligands: Thiolate Coligands Lead to Strong Red Luminescence from Charge-Transfer States (2014)
Journal Article
Tarran, W., Freeman, G., Murphy, L., Benham, A., Kataky, R., & Williams, J. (2014). Platinum(II) Complexes of N^C^N‑Coordinating 1,3-Bis(2-pyridyl)benzene Ligands: Thiolate Coligands Lead to Strong Red Luminescence from Charge-Transfer States. Inorganic Chemistry, 53(11), 5738-5749. https://doi.org/10.1021/ic500555w

A new family of platinum(II) complexes of the form PtLnSR have been prepared, where Ln represents a cyclometalating, NCN-bound tridentate ligand and SR is a monodentate thiolate ligand. The complexes fall into two groups, those of PtL1SR where HL1 =... Read More about Platinum(II) Complexes of N^C^N‑Coordinating 1,3-Bis(2-pyridyl)benzene Ligands: Thiolate Coligands Lead to Strong Red Luminescence from Charge-Transfer States.

An unprecedented cyclometallated platinum(II)complex incorporating a phosphinine co-ligand: synthesis and photoluminescence behaviour (2014)
Journal Article
Moussa, J., Cheminel, T., Freeman, G., Chamoreau, L., Williams, J., & Amouri, H. (2014). An unprecedented cyclometallated platinum(II)complex incorporating a phosphinine co-ligand: synthesis and photoluminescence behaviour. Dalton Transactions, 43(22), 8162-8165. https://doi.org/10.1039/c4dt00589a

The first luminescent cyclometallated platinum(II) complex bearing phosphinine co-ligands is reported. The long-lived luminescence, which it displays at 77 K, is assigned to a phosphinine-localised triplet excited state on the basis of electrochemica... Read More about An unprecedented cyclometallated platinum(II)complex incorporating a phosphinine co-ligand: synthesis and photoluminescence behaviour.

Platinum(II) complexes with cyclometallated 5-pi-delocalized-donor-1,3-di(2-pyridyl)benzene ligands as efficient phosphors for NIR-OLEDs (2014)
Journal Article
Nisic, F., Colombo, A., Dragonetti, C., Roberto, D., Valore, A., Malicka, J., …Williams, J. (2014). Platinum(II) complexes with cyclometallated 5-pi-delocalized-donor-1,3-di(2-pyridyl)benzene ligands as efficient phosphors for NIR-OLEDs. Journal of Materials Chemistry C Materials for optical and electronic devices, 2(10), 1791-1800. https://doi.org/10.1039/c3tc32086c

Two new pincer proligands, namely 5-(p-(N,N-diphenylamino)phenylethynyl)-1,3-di(2-pyridyl)benzene (HL1) and trans-5-(p-(N,N-diphenylamino)styryl-1,3-di(2-pyridyl)benzene (HL2) were prepared together with their N^C^N-coordinated cyclometallated platin... Read More about Platinum(II) complexes with cyclometallated 5-pi-delocalized-donor-1,3-di(2-pyridyl)benzene ligands as efficient phosphors for NIR-OLEDs.

Straightforward access to mono- and biscycloplatinated helicenes displaying circularly polarized phosphorescence by using crystallization resolution methods (2014)
Journal Article
Shen, C., Anger, E., Srebro, M., Vanthuyne, N., Deol, K., Jefferson, T., …Crassous, J. (2014). Straightforward access to mono- and biscycloplatinated helicenes displaying circularly polarized phosphorescence by using crystallization resolution methods. Chemical Science, 5(5), 1915-1927. https://doi.org/10.1039/c3sc53442a

Enantiopure mono-cycloplatinated-[8]helicene and bis-cycloplatinated-[6]helicene derivatives were prepared through column chromatography combined with crystallization of diastereomeric complexes using a chiral ancillary sulfoxide ligand. The UV-visib... Read More about Straightforward access to mono- and biscycloplatinated helicenes displaying circularly polarized phosphorescence by using crystallization resolution methods.

Long-lived metal complexes open up microsecond lifetime imaging microscopy under multiphoton excitation: from FLIM to PLIM and beyond (2013)
Journal Article
Baggaley, E., Botchway, S. W., Haycock, J. W., Morris, H., Sazanovich, I. V., Williams, J. G., & Weinstein, J. A. (2013). Long-lived metal complexes open up microsecond lifetime imaging microscopy under multiphoton excitation: from FLIM to PLIM and beyond. Chemical Science, 5(3), 879-886. https://doi.org/10.1039/c3sc51875b

Lifetime imaging microscopy with sub-micron resolution provides essential understanding of living systems by allowing both the visualisation of their structure, and the sensing of bio-relevant analytes in vivo using external probes. Chemistry is pivo... Read More about Long-lived metal complexes open up microsecond lifetime imaging microscopy under multiphoton excitation: from FLIM to PLIM and beyond.

Multifunctional and Reactive Enantiopure Organometallic Helicenes: Tuning Chiroptical Properties by Structural Variations of Mono- and Bis(platinahelicene)s (2011)
Journal Article
Anger, E., Rudolph, M., Norel, L., Zrig, S., Shen, C., Vanthuyne, N., …Réau, R. (2011). Multifunctional and Reactive Enantiopure Organometallic Helicenes: Tuning Chiroptical Properties by Structural Variations of Mono- and Bis(platinahelicene)s. Chemistry - A European Journal, 17(50), 14178-14198. https://doi.org/10.1002/chem.201101866

Evidence for electric field dependent dissociation of exciplexes in electron donor-acceptor organic solid films (2006)
Journal Article
Kalinowski, J., Cocchi, M., Virgili, D., Fattori, V., & Williams, J. (2006). Evidence for electric field dependent dissociation of exciplexes in electron donor-acceptor organic solid films. Chemical Physics Letters, 432(1-3), 110-115. https://doi.org/10.1016/j.cplett.2006.10.059

Electric field effect on time-resolved exciplex luminescence has been examined in electron donor–acceptor organic solid films of undoped and an organic phosphor PtL2Cl-doped (m-MTDATA:BPT:PC) blends. The applied field leads to a decrease of the initi... Read More about Evidence for electric field dependent dissociation of exciplexes in electron donor-acceptor organic solid films.

Highly efficient exciplex phosphorescence from organic light-emitting diodes (2006)
Journal Article
Virgili, D., Cocchi, M., Fattori, V., Sabatini, C., Kalinowski, J., & Williams, J. (2006). Highly efficient exciplex phosphorescence from organic light-emitting diodes. Chemical Physics Letters, 433(1-3), 145-149. https://doi.org/10.1016/j.cplett.2006.11.033

The efficiency of organic exciplex light-emitting-devices (EXLEDs) can be greatly improved by introduction of a phosphorescent sensitizer with a high electronic affinity. In the electron–hole combination process at the electron donor/acceptor interfa... Read More about Highly efficient exciplex phosphorescence from organic light-emitting diodes.

An introduction to thiol redox proteins in the endoplasmic reticulum and a review of current electrochemical methods of detection of thiols (2006)
Journal Article
Kruusma, J., Benham, A. M., Gareth Williams, J., & Kataky, R. (2006). An introduction to thiol redox proteins in the endoplasmic reticulum and a review of current electrochemical methods of detection of thiols. Analyst, 131(4), 459-473. https://doi.org/10.1039/b515874e

This aim of this paper is to expound the complexity of thiol redox systems in the endoplasmic reticulum of eukaryotic cells to the electroanalytical community. A summary of the state of the art in electrochemical methods for detection of thiols gives... Read More about An introduction to thiol redox proteins in the endoplasmic reticulum and a review of current electrochemical methods of detection of thiols.

Luminescent Complexes of Iridium(III) Containing N∧C∧N-Coordinating Terdentate Ligands (2006)
Journal Article
Wilkinson, A., Puschman, H., Howard, J., Foster, C., & Williams, J. (2006). Luminescent Complexes of Iridium(III) Containing N∧C∧N-Coordinating Terdentate Ligands. Inorganic Chemistry, 45(21), 8685-8699. https://doi.org/10.1021/ic061172l

A family of bis-terdentate iridium(III) complexes is reported which contain a cyclometalated, NCN-coordinating 1,3-di(2-pyridyl)benzene derivative. This coordination mode is favored by blocking competitive cyclometalation at the C4 and C6 positions o... Read More about Luminescent Complexes of Iridium(III) Containing N∧C∧N-Coordinating Terdentate Ligands.

Synthesis, structure, and photophysical properties of luminescent platinum(II) complexes containing cyclometalated 4-styryl-functionalized 2-phenylpyridine ligands (2006)
Journal Article
Yin, B., Niemeyer, F., Williams, J., Jiang, J., Boucekkine, A., Toupet, L., …Guerchais, V. (2006). Synthesis, structure, and photophysical properties of luminescent platinum(II) complexes containing cyclometalated 4-styryl-functionalized 2-phenylpyridine ligands. Inorganic Chemistry, 45(21), 8584-8596. https://doi.org/10.1021/ic0607282

Mutations in the FAD binding domain cause stress-induced misoxidation of the endoplasmic reticulum oxidoreductase Ero1b (2006)
Journal Article
Dias-Gunasekara, S., van Lith, M., Williams, J., Kataky, R., & Benham, A. (2006). Mutations in the FAD binding domain cause stress-induced misoxidation of the endoplasmic reticulum oxidoreductase Ero1b. Journal of Biological Chemistry, 281(35), 25018-25025. https://doi.org/10.1074/jbc.m602354200

Disulfide bond catalysis is an essential component of protein biogenesis in the secretory pathway, from yeast through to man. In the endoplasmic reticulum (ER), protein-disulfide isomerase (PDI) catalyzes the oxidation and isomerization of disulfide... Read More about Mutations in the FAD binding domain cause stress-induced misoxidation of the endoplasmic reticulum oxidoreductase Ero1b.

Synthesis, structural studies, theoretical calculations, and linear and nonlinear optical properties of terpyridyl lanthanide complexes: New evidence for the contribution of f electrons to the NLO activity (2006)
Journal Article
Sénéchal-David, K., Hemeryck, A., Tancrez, N., Toupet, L., Williams, J., Ledoux, I., …Maury, O. (2006). Synthesis, structural studies, theoretical calculations, and linear and nonlinear optical properties of terpyridyl lanthanide complexes: New evidence for the contribution of f electrons to the NLO activity. Journal of the American Chemical Society, 128(37), 12243-12255. https://doi.org/10.1021/ja063586j

The synthesis and structural, photophysical, and second-order nonlinear optical (NLO) properties of a novel lanthanide terpyridyl-like complex family LLn(NO3)3 (Ln = La, Gd, Dy, Yb, and Y) are reported. The isostructural character of this series in s... Read More about Synthesis, structural studies, theoretical calculations, and linear and nonlinear optical properties of terpyridyl lanthanide complexes: New evidence for the contribution of f electrons to the NLO activity.

A cross-coupling strategy for the synthesis of dimetallic assemblies containing mixed bipyridine–terpyridine bridging ligands: luminescence and energy transfer properties. (2006)
Journal Article
Arm, K., & Williams, J. (2006). A cross-coupling strategy for the synthesis of dimetallic assemblies containing mixed bipyridine–terpyridine bridging ligands: luminescence and energy transfer properties. Dalton Transactions, 2172-2174. https://doi.org/10.1039/b602022d

Tris-bidentate complexes of the form [Ir(N^C)2(N^N)]+ and [Ru(N^N)3]2+ incorporating a boronic acid substituent (N^C = 2-phenylpyridyl, N^N = a 2,2′-bipyridyl ligand), are cross-coupled with bromo-substituted bis-terpyridyl ruthenium and iridium comp... Read More about A cross-coupling strategy for the synthesis of dimetallic assemblies containing mixed bipyridine–terpyridine bridging ligands: luminescence and energy transfer properties..

A novel luminescence-based colorimetric oxygen sensor with a "traffic light" response. (2006)
Journal Article
Evans, R., Douglas, P., Williams, J., & Rochester, D. (2006). A novel luminescence-based colorimetric oxygen sensor with a "traffic light" response. Journal of Fluorescence, 16(2), 201-206. https://doi.org/10.1007/s10895-005-0037-9

We report a novel dual-lumophore oxygen sensor incorporating two lumophores: (1) the platinum(II) cyclometalated complex of the N^C^N-coordinating ligand 1,3,5-tri-(2-pyridyl)benzene and (2) Platinum octaethylporphyrin, which differ in both their emi... Read More about A novel luminescence-based colorimetric oxygen sensor with a "traffic light" response..

Controlling emission energy, self-quenching, and excimer formation in highly luminescent N C N-coordinated platinum(II) complexes (2005)
Journal Article
Farley, S., Rochester, D., Thompson, A., Howard, J., & Williams, J. (2005). Controlling emission energy, self-quenching, and excimer formation in highly luminescent N C N-coordinated platinum(II) complexes. Inorganic Chemistry, 44(26), 9690-9703. https://doi.org/10.1021/ic051049e

A series of cyclometalated platinum(II) complexes have been prepared, [PtLnCl], containing NCN-coordinating, terdentate ligands based on 1,3-dipyridylbenzene (HL1), incorporating aryl substituents at the central 5 position of the ligand. All of the n... Read More about Controlling emission energy, self-quenching, and excimer formation in highly luminescent N C N-coordinated platinum(II) complexes.

Boronic acid-substituted metal complexes: versatile building blocks for the synthesis of multimetallic assemblies (2005)
Journal Article
Arm, K., & Williams, J. (2005). Boronic acid-substituted metal complexes: versatile building blocks for the synthesis of multimetallic assemblies. Chemical Communications, 230-232. https://doi.org/10.1039/b414929g

Polypyridyl complexes of Ru(II) and Ir(III) incorporating a boronic acid substituent undergo cross-coupling with bromo-substituted complexes, and a sequential coupling-bromination coupling strategy permits the controlled synthesis of a luminescent Y-... Read More about Boronic acid-substituted metal complexes: versatile building blocks for the synthesis of multimetallic assemblies.

Synthesis and pH-sensitive luminescence of bis-terpyridyl iridium(III) complexes incorporating pendent pyridyl groups. (2005)
Journal Article
Arm, K., Leslie, W., & Williams, J. (2006). Synthesis and pH-sensitive luminescence of bis-terpyridyl iridium(III) complexes incorporating pendent pyridyl groups. Inorganica Chimica Acta, 359(4), 1222-1232. https://doi.org/10.1016/j.ica.2005.09.021

A series of iridium(III) bis-terpyridine complexes have been prepared which incorporate pendent pyridyl groups at the 4′-positions of one or both of the terpyridine (tpy) ligands. These include: three mutually isomeric homoleptic complexes, in which... Read More about Synthesis and pH-sensitive luminescence of bis-terpyridyl iridium(III) complexes incorporating pendent pyridyl groups..

Tissue-specific expression and dimerization of the endoplasmic reticulum oxidoreductase Erolb (2005)
Journal Article
Dias-Gunasekara, S., Gubbens, J., van Lith, M., Dunne, C., Williams, J., Kataky, R., …Benham, A. (2005). Tissue-specific expression and dimerization of the endoplasmic reticulum oxidoreductase Erolb. Journal of Biological Chemistry, 280(38), 33066-33075. https://doi.org/10.1074/jbc.m505023200

Endoplasmic reticulum oxidoreductases (Eros) are essential for the formation of disulfide bonds. Understanding disulfide bond catalysis in mammals is important because of the involvement of protein misfolding in conditions such as diabetes, arthritis... Read More about Tissue-specific expression and dimerization of the endoplasmic reticulum oxidoreductase Erolb.

Sensitised luminescence from phenanthridine appended lanthanide complexes: analysis of triplet mediated energy transfer processes in terbium, europium and neodymium complexes (2001)
Journal Article
Beeby, A., Faulkner, S., Parker, D., & Williams, J. (2001). Sensitised luminescence from phenanthridine appended lanthanide complexes: analysis of triplet mediated energy transfer processes in terbium, europium and neodymium complexes. Journal of the Chemical Society-Perkin Transactions 2, 1268-1273

Time resolved luminescence spectroscopy and laser flash photolysis have been used to probe the energy transfer processes in the europium, neodymium and terbium complexes of ligand, 1. The ligand, chosen because of the high kinetic stability of lantha... Read More about Sensitised luminescence from phenanthridine appended lanthanide complexes: analysis of triplet mediated energy transfer processes in terbium, europium and neodymium complexes.

Palladium-catalysed cross-coupling reactions of ruthenium bis- terpyridyl complexes: strategies for the incorporation and exploitation of boronic acid functionality (2001)
Journal Article
Aspley, C., & Williams, J. (2001). Palladium-catalysed cross-coupling reactions of ruthenium bis- terpyridyl complexes: strategies for the incorporation and exploitation of boronic acid functionality. New Journal of Chemistry, 25(9), 1136-1147. https://doi.org/10.1039/b103062k

The palladium catalysed Miyaura cross-coupling reactions of 4'- (4-bromophenyl)-2,2': 6',2"-terpyridine (tpy-phi -Br) and 4'- bromo-2,2':6',2"-terpyridine (tpy-Br) with bis(neopentyl glycolato)diboron (B(2)neo(2)) lead to the first reported examples... Read More about Palladium-catalysed cross-coupling reactions of ruthenium bis- terpyridyl complexes: strategies for the incorporation and exploitation of boronic acid functionality.

Chiroptical, ESMS and NMR spectroscopic study of the interaction of enantiopure lanthanide complexes with selected self-complementary dodecamer oligonucleotides (2001)
Journal Article
Bobba, G., Dickins, R., Kean, S., Mathieu, C., Parker, D., Peacock, R., …Geraldes, C. (2001). Chiroptical, ESMS and NMR spectroscopic study of the interaction of enantiopure lanthanide complexes with selected self-complementary dodecamer oligonucleotides. Journal of the Chemical Society-Perkin Transactions 2, 1729-1737

The interaction of Delta- and Lambda -Eu and Yb cationic complexes bearing an N-methylphenanthridinium chromophore with [(CG)(6)](2), [(AT)(6)], and [CGCGAATTCGCG](2) has been interrogated by ESMS, H-1 NMR, absorption, difference circular dichroism,... Read More about Chiroptical, ESMS and NMR spectroscopic study of the interaction of enantiopure lanthanide complexes with selected self-complementary dodecamer oligonucleotides.