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Four Redox Isomers of a [3 × 3] Copper–Iron Heterometal Grid (2023)
Journal Article
Sato, H., Onuki, T., Newton, G. N., Shiga, T., & Oshio, H. (2023). Four Redox Isomers of a [3 × 3] Copper–Iron Heterometal Grid. Inorganic Chemistry, 62(44), 18003-18008. https://doi.org/10.1021/acs.inorgchem.3c02498

A mixed-valence heterometallic nonanuclear [3 × 3] grid complex, [CuI2CuII6FeIII(L)6](BF4)5·MeOH·9H2O (1; MeOH = methanol), was synthesized by a one-pot reaction of copper and iron ions with multidentate ligand 2,6-bis[5-(2-pyridinyl)-1H-pyrazol-3-yl... Read More about Four Redox Isomers of a [3 × 3] Copper–Iron Heterometal Grid.

Silver(I)-Catalyzed Synthesis of Cuneanes from Cubanes and their Investigation as Isosteres (2023)
Journal Article
Smith, E., Jones, K. D., O’Brien, L., Argent, S. P., Salome, C., Lefebvre, Q., …Lam, H. W. (2023). Silver(I)-Catalyzed Synthesis of Cuneanes from Cubanes and their Investigation as Isosteres. Journal of the American Chemical Society, 145(30), 16365-16373. https://doi.org/10.1021/jacs.3c03207

Bridged or caged polycyclic hydrocarbons have rigid structures that project substituents into precise regions of 3D space, making them attractive as linking groups in materials science and as building blocks for medicinal chemistry. The efficient syn... Read More about Silver(I)-Catalyzed Synthesis of Cuneanes from Cubanes and their Investigation as Isosteres.

A lithium-air battery and gas handling system demonstrator (2023)
Journal Article
Jordan, J. W., Vailaya, G., Holc, C., Jenkins, M., McNulty, R. C., Puscalau, C., …Johnson, L. R. (2024). A lithium-air battery and gas handling system demonstrator. Faraday Discussions, 248, 381-391. https://doi.org/10.1039/d3fd00137g

The lithium-air (Li-air) battery offers one of the highest practical specific energy densities of any battery system at >400 W h kgsystem−1. The practical cell is expected to operate in air, which is flowed into the positive porous electrode where it... Read More about A lithium-air battery and gas handling system demonstrator.

Application of a Synthetic Ferredoxin‐Inspired [4Fe4S]‐Peptide Maquette as the Redox Partner for an [FeFe]‐Hydrogenase (2023)
Journal Article
Bombana, A., Shanmugam, M., Collison, D., Kibler, A. J., Newton, G. N., Jäger, C. M., …Mitchell, N. J. (2023). Application of a Synthetic Ferredoxin‐Inspired [4Fe4S]‐Peptide Maquette as the Redox Partner for an [FeFe]‐Hydrogenase. ChemBioChem, 24(18), Article e202300250. https://doi.org/10.1002/cbic.202300250

‘Bacterial-type’ ferredoxins host a cubane [4Fe4S]2+/+ cluster that enables these proteins to mediate electron transfer and facilitate a broad range of biological processes. Peptide maquettes based on the conserved cluster-forming motif have previous... Read More about Application of a Synthetic Ferredoxin‐Inspired [4Fe4S]‐Peptide Maquette as the Redox Partner for an [FeFe]‐Hydrogenase.

Diphosphoryl‐functionalized Polyoxometalates: Structurally and Electronically Tunable Hybrid Molecular Materials (2023)
Journal Article
Amin, S. S., Jones, K. D., Kibler, A. J., Damian, H. A., Cameron, J. M., Butler, K. S., …Newton, G. N. (2023). Diphosphoryl‐functionalized Polyoxometalates: Structurally and Electronically Tunable Hybrid Molecular Materials. Angewandte Chemie International Edition, 62(23), Article e202302446. https://doi.org/10.1002/anie.202302446

Herein, we report the synthesis and characterization of a new class of hybrid Wells–Dawson polyoxometalate (POM) containing a diphosphoryl group (P2O6X) of the general formula [P2W17O57(P2O6X)]6− (X=O, NH, or CR1R2). Modifying the bridging unit X was... Read More about Diphosphoryl‐functionalized Polyoxometalates: Structurally and Electronically Tunable Hybrid Molecular Materials.

Voltammetric Evidence of Proton Transport through the Sidewalls of Single-Walled Carbon Nanotubes (2023)
Journal Article
Jordan, J. W., Mortiboy, B., Khlobystov, A. N., Johnson, L. R., Newton, G. N., & Walsh, D. A. (2023). Voltammetric Evidence of Proton Transport through the Sidewalls of Single-Walled Carbon Nanotubes. Journal of the American Chemical Society, 145(16), 9052–9058. https://doi.org/10.1021/jacs.3c00554

Understanding ion transport in solid materials is crucial in the design of electrochemical devices. Of particular interest in recent years is the study of ion transport across 2-dimensional, atomically thin crystals. In this contribution, we describe... Read More about Voltammetric Evidence of Proton Transport through the Sidewalls of Single-Walled Carbon Nanotubes.

Electronic Structure and Photoactivity of Organoarsenic Hybrid Polyoxometalates (2023)
Journal Article
Kibler, A. J., Tsang, N., Winslow, M., Argent, S. P., Lam, H. W., Robinson, D., & Newton, G. N. (2023). Electronic Structure and Photoactivity of Organoarsenic Hybrid Polyoxometalates. Inorganic Chemistry, 62(8), 3585-3591. https://doi.org/10.1021/acs.inorgchem.2c04249

Organofunctionalization of polyoxometalates (POMs) allows the preparation of hybrid molecular systems with tunable electronic properties. Currently, there are only a handful of approaches that allow for the fine-tuning of POM frontier molecular orbit... Read More about Electronic Structure and Photoactivity of Organoarsenic Hybrid Polyoxometalates.

Host–Guest Chemistry in Boron Nitride Nanotubes: Interactions with Polyoxometalates and Mechanism of Encapsulation (2022)
Journal Article
Jordan, J. W., Chernov, A. I., Rance, G. A., Stephen Davies, E., Lanterna, A. E., Alves Fernandes, J., …Khlobystov, A. N. (2023). Host–Guest Chemistry in Boron Nitride Nanotubes: Interactions with Polyoxometalates and Mechanism of Encapsulation. Journal of the American Chemical Society, 145(2), 1206-1215. https://doi.org/10.1021/jacs.2c10961

Boron nitride nanotubes (BNNTs) are an emerging class of molecular container offering new functionalities and possibilities for studying molecules at the nanoscale. Herein, BNNTs are demonstrated as highly effective nanocontainers for polyoxometalate... Read More about Host–Guest Chemistry in Boron Nitride Nanotubes: Interactions with Polyoxometalates and Mechanism of Encapsulation.

Enflurane Additive for Sodium Negative Electrodes (2022)
Journal Article
Akkisetty, B., Dimogiannis, K., Searle, J., Rogers, D., Newton, G. N., & Johnson, L. R. (2022). Enflurane Additive for Sodium Negative Electrodes. ACS Applied Materials and Interfaces, 14(32), 36551-36556. https://doi.org/10.1021/acsami.2c06502

Development of sodium anodes, both hard carbon (HC) and metallic, is dependent on the discovery of electrolyte formations and additives able to stabilize the interphase and support Na+ transport. Halogen salt additives are known to lower the energy b... Read More about Enflurane Additive for Sodium Negative Electrodes.

Synthesis of New Morphinan Opioids by TBADT‐Catalyzed Photochemical Functionalization at the Carbon Skeleton (2022)
Journal Article
Gorbachev, D., Smith, E., Argent, S. P., Newton, G. N., & Lam, H. W. (2022). Synthesis of New Morphinan Opioids by TBADT‐Catalyzed Photochemical Functionalization at the Carbon Skeleton. Chemistry - A European Journal, 28(50), Article e202201478. https://doi.org/10.1002/chem.202201478

The synthesis of new morphinan opioids by the addition of photochemically generated carbon-centered radicals to substrates containing an enone in the morphinan C-ring, is described. Using tetrabutylammonium decatungstate (TBADT) as a hydrogen atom tr... Read More about Synthesis of New Morphinan Opioids by TBADT‐Catalyzed Photochemical Functionalization at the Carbon Skeleton.

A ring of grids: a giant spin-crossover cluster (2021)
Journal Article
Shiga, T., Tachibana, M., Sagayama, H., Kumai, R., Newton, G. N., Oshio, H., & Nihei, M. (2021). A ring of grids: a giant spin-crossover cluster. Chemical Communications, 57(79), 10162-10165. https://doi.org/10.1039/d1cc04346c

Mononuclear and icosanuclear spin-crossover complexes, [FeII(HL)2](BF4)2(1) and [FeII 20(L)24](BF4)16(2), were synthesized using an asymmetric multidentate ligand (HL).1has a bis-chelate structure with two protonated ligands, while2has a ring-shape s... Read More about A ring of grids: a giant spin-crossover cluster.

Organic–Inorganic Hybrid Polyoxotungstates As Configurable Charge Carriers for High Energy Redox Flow Batteries (2021)
Journal Article
Peake, C. L., Kibler, A. J., Newton, G. N., & Walsh, D. A. (2021). Organic–Inorganic Hybrid Polyoxotungstates As Configurable Charge Carriers for High Energy Redox Flow Batteries. ACS Applied Energy Materials, 4(9), 8765-8773. https://doi.org/10.1021/acsaem.1c00800

We describe the synthesis and electrochemical analysis of the phenyl siloxane-hybridized phosphotungstate Keggin-type polyoxometalate (POM) TBA3[PW11O39(SiC6H5)2O] (TBA3W11SiPh) and its performance as the charge carrier in nonaqueous redox flow batte... Read More about Organic–Inorganic Hybrid Polyoxotungstates As Configurable Charge Carriers for High Energy Redox Flow Batteries.

Electrochemistry of redox-active molecules confined within narrow carbon nanotubes (2021)
Journal Article
Jordan, J. W., Townsend, W. J. V., Johnson, L. R., Walsh, D. A., Newton, G. N., & Khlobystov, A. N. (2021). Electrochemistry of redox-active molecules confined within narrow carbon nanotubes. Chemical Society Reviews, 50(19), 10895-10916. https://doi.org/10.1039/d1cs00478f

Confinement of molecules within nanocontainers can be a powerful tool for controlling the states of guest-molecules, tuning properties of host-nanocontainers and triggering the emergence of synergistic properties within the host–guest systems. Among... Read More about Electrochemistry of redox-active molecules confined within narrow carbon nanotubes.

A Cooperative Photoactive Class-I Hybrid Polyoxometalate With Benzothiadiazole–Imidazolium Cations (2021)
Journal Article
Kibler, A. J., Souza, V. S., Fernandes, J. A., Lewis, W., Argent, S. P., Dupont, J., & Newton, G. N. (2021). A Cooperative Photoactive Class-I Hybrid Polyoxometalate With Benzothiadiazole–Imidazolium Cations. Frontiers in Chemistry, 8, Article 612535. https://doi.org/10.3389/fchem.2020.612535

An organic–inorganic hybrid species based on the Wells–Dawson polyoxotungstate [P2W18O62]6− and novel fluorescent benzothiadiazole–imidazolium cations, [BTD-4,7-ImH]2+, has been synthesized. X-ray crystallographic analysis shows that the inorganic an... Read More about A Cooperative Photoactive Class-I Hybrid Polyoxometalate With Benzothiadiazole–Imidazolium Cations.

Functionalization of Carbon Surfaces Tunes the Redox Stability of Polyoxometalate@Carbon Electrodes (2020)
Journal Article
Mughal, N. S., Walsh, D. A., & Newton, G. N. (2020). Functionalization of Carbon Surfaces Tunes the Redox Stability of Polyoxometalate@Carbon Electrodes. ACS Applied Energy Materials, 3(12), 12308-12315. https://doi.org/10.1021/acsaem.0c02360

The use of redox-active polyoxometalates (POMs) offers unique opportunities for the development of advanced functional materials, but the use of such systems is often limited by their instability in operando. To enhance the functional stability of PO... Read More about Functionalization of Carbon Surfaces Tunes the Redox Stability of Polyoxometalate@Carbon Electrodes.

Redox‐Active Hybrid Polyoxometalate‐Stabilised Gold Nanoparticles (2020)
Journal Article
Martin, C., Kastner, K., Cameron, J. M., Hampson, E., Alves Fernandes, J., Gibson, E. K., …Newton, G. N. (2020). Redox‐Active Hybrid Polyoxometalate‐Stabilised Gold Nanoparticles. Angewandte Chemie International Edition, 59(34), 14331-14335. https://doi.org/10.1002/anie.202005629

We report the design and preparation of multifunctional hybrid nanomaterials through the stabilization of gold nanoparticles with thiol‐functionalised hybrid organic–inorganic polyoxometalates (POMs). The covalent attachment of the hybrid POM forms n... Read More about Redox‐Active Hybrid Polyoxometalate‐Stabilised Gold Nanoparticles.

Heteroleptic iron(ii) complexes with naphthoquinone-type ligands (2020)
Journal Article
Shiga, T., Kumamaru, R., Newton, G. N., & Oshio, H. (2020). Heteroleptic iron(ii) complexes with naphthoquinone-type ligands. Dalton Transactions, 49(5), 1485-1491. https://doi.org/10.1039/c9dt03946e

Heteroleptic iron complexes with a naphthoquinone-type ligand, 2-(pyridin-2-yl)-1H-naphtho[2,3-d]imidazole-4,9-dione (HL), were synthesized, and their structures and magnetic properties were investigated. Two spin-crossover complexes, [Fe(L)2(L1)] (1... Read More about Heteroleptic iron(ii) complexes with naphthoquinone-type ligands.

Substituent dependence on the spin crossover behaviour of mononuclear Fe(ii) complexes with asymmetric tridentate ligands (2019)
Journal Article
Saiki, R., Miyamoto, H., Sagayama, H., Kumai, R., Newton, G. N., Shiga, T., & Oshio, H. (2019). Substituent dependence on the spin crossover behaviour of mononuclear Fe(ii) complexes with asymmetric tridentate ligands. Dalton Transactions, 48(10), 3231-3236. https://doi.org/10.1039/c9dt00204a

Three mononuclear iron(II) complexes of the formula [FeII(H2L1-3)2](BF4)2.x(solv.) (H2L1-3 = 2-[5-(R-phenyl)-1H-pyrazole-3-yl] 6-benzimidazole pyridine; H2L1: R = 4-methylphenyl, H2L2, R = 2,4,6-trimethylphenyl, H2L3, R = 2,3,4,5,6pentamethylphenyl)... Read More about Substituent dependence on the spin crossover behaviour of mononuclear Fe(ii) complexes with asymmetric tridentate ligands.