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Professor GRAHAM NEWTON's Outputs (60)

Tuning the electronic structure of organic–inorganic hybrid polyoxometalates: The crucial role of the covalent linkage (2018)
Journal Article
Kibler, A. J., & Newton, G. N. (2018). Tuning the electronic structure of organic–inorganic hybrid polyoxometalates: The crucial role of the covalent linkage. Polyhedron, 154, 1-20. https://doi.org/10.1016/j.poly.2018.06.027

The covalent organofunctionalization of polyoxometalates (POMs) has been widely used to both control and enhance their redox properties, particularly for applications in catalysis, energy storage, optics and molecular magnetism. The design of such sy... Read More about Tuning the electronic structure of organic–inorganic hybrid polyoxometalates: The crucial role of the covalent linkage.

Cobalt complexes with redox-active anthraquinone-type ligands (2018)
Journal Article
Shiga, T., Kumamaru, R., Newton, G. N., & Oshio, H. (2018). Cobalt complexes with redox-active anthraquinone-type ligands. Dalton Transactions, 47(23), https://doi.org/10.1039/C8DT00586A

Three anthraquinone-type multidentate ligands, HL1-3 (HL = 2-R-1H-anthra[1,2-d]imidazole6,11-dione, HL1; R = (2-pyridyl), HL2; R = (4,6-dimethyl-2-pyridyl), HL3; R = (6-methoxy-2pyridyl)), were prepared, and their complexation behaviour were investig... Read More about Cobalt complexes with redox-active anthraquinone-type ligands.

Post-functionalization of a photoactive hybrid polyoxotungstate (2018)
Journal Article
Cameron, J. M., Fujimoto, S., Wei, R.-J., Newton, G. N., & Oshio, H. (in press). Post-functionalization of a photoactive hybrid polyoxotungstate. Dalton Transactions, https://doi.org/10.1039/C8DT01253A

A new post-functionalization strategy for hybrid polyoxometalate (POM) clusters is presented, whereby the electronic properties and visible-light driven oxidative reactivity of the POM core can be altered by controlled addition of transition metal io... Read More about Post-functionalization of a photoactive hybrid polyoxotungstate.

3D printable photochromic molecular materials for reversible information storage (2018)
Journal Article
Wales, D. J., Cao, Q., Kastner, K., Karjalainen, E., Newton, G. N., & Sans, V. (2018). 3D printable photochromic molecular materials for reversible information storage. Advanced Materials, 30(26), Article 1800159. https://doi.org/10.1002/adma.201800159

The formulation of advanced molecular materials with bespoke polymeric ionic liquid matrices that stabilize and solubilize hybrid organic-inorganic polyoxometalates and allow their processing by additive manufacturing, is effectively demonstrated. Th... Read More about 3D printable photochromic molecular materials for reversible information storage.

Pre-programmed self-assembly of polynuclear clusters (2018)
Journal Article
Shiga, T., Newton, G. N., & Oshio, H. (in press). Pre-programmed self-assembly of polynuclear clusters. Dalton Transactions, https://doi.org/10.1039/C8DT00822A

This perspective reviews our recent efforts towards the self-assembly of polynuclear clusters with ditopic and tritopic multidentate ligands HL1 (2-phenyl-4,5-bis{6-(3,5-dimethylpyrazol-1-yl)pyrid-2-yl}-1H-imidazole) and H2L2 (2,6-bis-[5-(2-pyridinyl... Read More about Pre-programmed self-assembly of polynuclear clusters.

Shining a light on the photo-sensitisation of organic-inorganic hybrid polyoxometalates (2018)
Journal Article
Cameron, J. M., Wales, D. J., & Newton, G. (in press). Shining a light on the photo-sensitisation of organic-inorganic hybrid polyoxometalates. Dalton Transactions, https://doi.org/10.1039/C8DT00400E

Finding new ways of using visible light (or, more specifically, solar irradiation) to drive commercially significant and/or challenging chemical processes is an ongoing research goal. Polyoxometalates (POMs) are discrete, metal-oxide clusters which a... Read More about Shining a light on the photo-sensitisation of organic-inorganic hybrid polyoxometalates.

A Simple Approach to the Visible-Light Photoactivation of Molecular Metal Oxides (2017)
Journal Article
Fujimoto, S., Cameron, J. M., Wei, R. J., Kastner, K., Robinson, D., Sans, V., Newton, G. N., & Oshio, H. (2017). A Simple Approach to the Visible-Light Photoactivation of Molecular Metal Oxides. Inorganic Chemistry, 56(20), 12169-12177. https://doi.org/10.1021/acs.inorgchem.7b01499

© 2017 American Chemical Society. This study explores a new method to maximize the visible-light-driven photocatalytic performance of organic-inorganic hybrid polyoxometalates (POMs). Experimental and theoretical investigations of a family of phospho... Read More about A Simple Approach to the Visible-Light Photoactivation of Molecular Metal Oxides.

Synthesis, crystal structures and magnetic properties of composites incorporating an Fe(II) spin crossover complex and polyoxometalates (2017)
Journal Article
Kuramochi, S., Shiga, T., Cameron, J. M., Newton, G. N., & Oshio, H. (2017). Synthesis, crystal structures and magnetic properties of composites incorporating an Fe(II) spin crossover complex and polyoxometalates. Inorganics, 5(3), Article 48. https://doi.org/10.3390/inorganics5030048

[Fe(dppOH)2]2+ (dppOH = 2,6-di(pyrazol-1-yl)-4-(hydroxymethyl)pyridine) is known to show spin crossover (SCO) behavior and light-induced excited spin state transitions (LIESST). Here, we show that the SCO properties of the [Fe(dppOH)2]2+ complex can... Read More about Synthesis, crystal structures and magnetic properties of composites incorporating an Fe(II) spin crossover complex and polyoxometalates.

An antiferromagnetically coupled heterometal Cu6Fe wheel (2017)
Journal Article
Saiki, R., Yoshida, N., Hoshino, N., Newton, G. N., Shiga, T., & Oshio, H. (2017). An antiferromagnetically coupled heterometal Cu6Fe wheel. Chemistry Letters, 46(8), https://doi.org/10.1246/cl.170365

A heterometal Cu6Fe wheel molecule, [CuII6FeIII(HL)6- (OH)2(OCH3)4](NO3)3¢6H2O (1¢6H2O) (H2L = 1-(2-pyridine) 3-(2-pyrrole)acetylacetone) was synthesized by the one-pot reaction of H2L with copper and iron sources. X-ray structural analysis reveals t... Read More about An antiferromagnetically coupled heterometal Cu6Fe wheel.

Redox-active organic-inorganic hybrid polyoxometalate micelles (2017)
Journal Article
Kastner, K., Kibler, A. J., Karjalainen, E., Fernandes, J. A., Sans, V., & Newton, G. (in press). Redox-active organic-inorganic hybrid polyoxometalate micelles. Journal of Materials Chemistry A, 5, https://doi.org/10.1039/C7TA00408G

A redox-active hybrid organic-inorganic polyoxometalate surfactant showed solvent-dependent self-assembly to form nano-scale architectures. The supramolecular assemblies exhibited contrasting electronic structure and redox activity to their molecular... Read More about Redox-active organic-inorganic hybrid polyoxometalate micelles.

A multi-redox responsive cyanometalate-based metallogel (2017)
Journal Article
Mitsumoto, K., Cameron, J., Wei, R. J., Nishikawa, H., Shiga, T., Nihei, M., Newton, G., & Oshio, H. (2017). A multi-redox responsive cyanometalate-based metallogel. Chemistry - A European Journal, 23(7), 1502-1506. https://doi.org/10.1002/chem.201605542

A tetrathiafulvalene (TTF) based tridentate ligand (-(4’-methyl-4,5-di-n-dodecylthylthiotetrathiafulvalene-5’-ylthio)-’-[tris-2,2,2-(1-pyrazolyl)ethoxy]-p-xylene) (L) with long-chain alkyl moieties was prepared in order to obtain a new multi-redox... Read More about A multi-redox responsive cyanometalate-based metallogel.

Orbital engineering: photoactivation of an organofunctionalized polyoxotungstate (2016)
Journal Article
Newton, G., Oshio, H., Cameron, J., Fujimoto, S., Kastner, K., Wei, R. J., Robinson, D., & Sans, V. (2017). Orbital engineering: photoactivation of an organofunctionalized polyoxotungstate. Chemistry - A European Journal, 23(1), 47-50. https://doi.org/10.1002/chem.201605021

Tungsten-based polyoxometalates (POMs) are employed as UV-driven photo-catalysts for a range of organic transformations. Their photoactivity is dependent on electronic transitions between frontier orbitals, and thus manipulation of orbital energy lev... Read More about Orbital engineering: photoactivation of an organofunctionalized polyoxotungstate.

Solvent-induced on/off switching of intramolecular electron transfer in a cyanide-bridged trigonal bipyramidal complex (2016)
Journal Article
Wei, R. J., Nakahara, R., Cameron, J. M., Newton, G., Shiga, T., Sagayama, H., Kumai, R., Murakami, Y., & Oshio, H. (2016). Solvent-induced on/off switching of intramolecular electron transfer in a cyanide-bridged trigonal bipyramidal complex. Dalton Transactions, 45(43), 17104-17107. https://doi.org/10.1039/C6DT03416K

A cyanide-bridged [Co3Fe2] cluster with trigonal bipyramidal geometry shows solvent-driven reversible on/off switching of its thermally induced electron-transfer-coupled spin transition (ETCST) behaviour.

Oxalate-bridged heterometallic chains with monocationic dabco derivatives (2016)
Journal Article
Sakurai, T., Saiki, R., Wei, R. J., Newton, G., Shiga, T., & Oshio, H. (in press). Oxalate-bridged heterometallic chains with monocationic dabco derivatives. Dalton Transactions, 45, https://doi.org/10.1039/C6DT02955H

A series of bimetallic oxalate-bridged one-dimensional chains with monocationic dabco derivatives, ({R-dabco}[M(solv)2][Cr(ox)3]·n(solv)) (dabco = 1,4-diazabicyclo[2.2.2]octane, H2ox = oxalate; R = H, M = Co (1); R = H, M = Zn (2); R = Bu, M = Co (3)... Read More about Oxalate-bridged heterometallic chains with monocationic dabco derivatives.

Studies on the magnetic ground state of a spin Möbius strip (2016)
Journal Article
Newton, G., Hoshino, N., Matsumoto, T., Shiga, T., Nakano, M., Nojiri, H., Furukawa, Y., & Oshio, H. (2016). Studies on the magnetic ground state of a spin Möbius strip. Chemistry - A European Journal, 22(40), 14205-14212. https://doi.org/10.1002/chem.201602439

Here we report the synthesis, structure and detailed characterisation of three n-membered oxovanadium rings, Nan[(V=O)nNan(H2O)n(α, β, or γ-CD)2]⋅mH2O (n = 6, 7, or 8), prepared by the reactions of (V=O)SO4⋅xH2O with α, β, or γ-cyclodextrins(CDs) and... Read More about Studies on the magnetic ground state of a spin Möbius strip.

Controlled reactivity tuning of metal-functionalized vanadium oxide clusters (2015)
Journal Article
Kastner, K., Forster, J., Ida, H., Newton, G. N., Oshio, H., & Streb, C. (2015). Controlled reactivity tuning of metal-functionalized vanadium oxide clusters. Chemistry - A European Journal, 21(21), 7686-7689. https://doi.org/10.1002/chem.201501049

Controlling the assembly and functionalization of molecular metal oxides [MxOy]n− (M=Mo, W, V) allows the targeted design of functional molecular materials. While general methods exist that enable the predetermined functionalization of tungstates and... Read More about Controlled reactivity tuning of metal-functionalized vanadium oxide clusters.

Cyanide-Bridged Decanuclear Cobalt–Iron Cage (2014)
Journal Article
Oshio, H., Shiga, T., Newton, G. N., Tetsuka, T., Nihei, M., Sakai, K., & Sekine, Y. (2014). Cyanide-Bridged Decanuclear Cobalt–Iron Cage. Inorganic Chemistry, 53(12), 5899-5901. https://doi.org/10.1021/ic500964m

A cyanide-bridged decanuclear [Co6Fe4] cluster was synthesized by a one-pot reaction, and the magnetic properties and electronic configuration were investigated. The complex displayed thermally controlled electron-transfer-coupled spin transition (ET... Read More about Cyanide-Bridged Decanuclear Cobalt–Iron Cage.

Programmable spin-state switching in a mixed-valence spin-crossover iron grid (2014)
Journal Article
Matsumoto, T., Newton, G. N., Shiga, T., Hayami, S., Matsui, Y., Okamoto, H., Kumai, R., Murakami, Y., & Oshio, H. (2014). Programmable spin-state switching in a mixed-valence spin-crossover iron grid. Nature Communications, 5, 1-8. https://doi.org/10.1038/ncomms4865

Photo-switchable systems, such as discrete spin-crossover complexes and bulk iron–cobalt Prussian blue analogues, exhibit, at a given temperature, a bistability between low- and high-spin states, allowing the storage of binary data. Grouping differen... Read More about Programmable spin-state switching in a mixed-valence spin-crossover iron grid.