All Outputs (31)

Selective Photocatalytic Reduction of CO2 to CH4 over NU-1000 Metal-Organic Frameworks (2024)
Preprint / Working Paper
Korhonen, P., Thangamuthu, M., Castaldelli, E., Diego-Lopez, A., Weilhard, A., Clowes, R., O'Shea, J., Laybourn, A., & Lanterna, A. Selective Photocatalytic Reduction of CO2 to CH4 over NU-1000 Metal-Organic Frameworks

CO2 adsorption and its subsequent utilization represent a promising avenue for mitigating climate change. The conver-sion of CO2 into valuable and useful products like carbon monoxide, methane, and methanol offers significant economic benefits. Howev... Read More about Selective Photocatalytic Reduction of CO2 to CH4 over NU-1000 Metal-Organic Frameworks.

Epitaxy of GaSe Coupled to Graphene: From In Situ Band Engineering to Photon Sensing (2024)
Journal Article
Bradford, J., Dewes, B. T., Shiffa, M., Cottam, N. D., Rahman, K., Cheng, T. S., Novikov, S. V., Makarovsky, O., O'Shea, J. N., Beton, P. H., Lara-Avila, S., Harknett, J., Greenaway, M. T., & Patanè, A. (2024). Epitaxy of GaSe Coupled to Graphene: From In Situ Band Engineering to Photon Sensing. Small, 20(40), Article 2404809. https://doi.org/10.1002/smll.202404809

2D semiconductors can drive advances in quantum science and technologies. However, they should be free of any contamination; also, the crystallographic ordering and coupling of adjacent layers and their electronic properties should be well‐controlled... Read More about Epitaxy of GaSe Coupled to Graphene: From In Situ Band Engineering to Photon Sensing.

Porphyrin-fused graphene nanoribbons (2024)
Journal Article
Chen, Q., Lodi, A., Zhang, H., Gee, A., Wang, H. I., Kong, F., Clarke, M., Edmondson, M., Hart, J., O’Shea, J. N., Stawski, W., Baugh, J., Narita, A., Saywell, A., Bonn, M., Müllen, K., Bogani, L., & Anderson, H. L. (2024). Porphyrin-fused graphene nanoribbons. Nature Chemistry, 16, 1133-1140. https://doi.org/10.1038/s41557-024-01477-1

Graphene nanoribbons (GNRs), nanometre-wide strips of graphene, are promising materials for fabricating electronic devices. Many GNRs have been reported, yet no scalable strategies are known for synthesizing GNRs with metal atoms and heteroaromatic u... Read More about Porphyrin-fused graphene nanoribbons.

Structure and chemical composition of the Mg electrode during cycling in a simple glyme electrolyte (2024)
Journal Article
Dimogiannis, K., Sankowski, A., Holc, C., Parmenter, C. D., Newton, G. N., Walsh, D. A., …Johnson, L. R. (2024). Structure and chemical composition of the Mg electrode during cycling in a simple glyme electrolyte. Energy Storage Materials, 67, Article 103280. https://doi.org/10.1016/j.ensm.2024.103280

The volumetric energy density of magnesium exceeds that of lithium, making magnesium batteries particularly promising for next-generation energy storage. However, electrochemical cycling of magnesium electrodes in common battery electrolytes is coulo... Read More about Structure and chemical composition of the Mg electrode during cycling in a simple glyme electrolyte.

Template‐Directed Synthesis of Strained meso‐meso‐Linked Porphyrin Nanorings (2024)
Journal Article
Van Raden, J. M., Deng, J., Gotfredsen, H., Hergenhahn, J., Clarke, M., Edmondson, M., …Anderson, H. L. (2024). Template‐Directed Synthesis of Strained meso‐meso‐Linked Porphyrin Nanorings. Angewandte Chemie International Edition, Article e202400103. https://doi.org/10.1002/anie.202400103

Strained macrocycles display interesting properties, such as conformational rigidity, often resulting in enhance π‐conjugation or enhanced affinity for non‐covalent guest binding, yet they can be difficult to synthesize. Here we use computational mod... Read More about Template‐Directed Synthesis of Strained meso‐meso‐Linked Porphyrin Nanorings.

Wafer-Scale Two-Dimensional Semiconductors for Deep UV Sensing (2023)
Journal Article
Shiffa, M., Dewes, B. T., Bradford, J., Cottam, N. D., Cheng, T. S., Mellor, C. J., …Patanè, A. (2024). Wafer-Scale Two-Dimensional Semiconductors for Deep UV Sensing. Small, 20(7), Article 2305865. https://doi.org/10.1002/smll.202305865

2D semiconductors (2SEM) can transform many sectors, from information and communication technology to healthcare. To date, top‐down approaches to their fabrication, such as exfoliation of bulk crystals by “scotch‐tape,” are widely used, but have limi... Read More about Wafer-Scale Two-Dimensional Semiconductors for Deep UV Sensing.

The adsorption and XPS of triphenylamine-based organic dye molecules on rutile TiO2(110) prepared by UHV-compatible electrospray deposition (2023)
Journal Article
Alharbi, N., Hart, J., & O'Shea, J. N. (2023). The adsorption and XPS of triphenylamine-based organic dye molecules on rutile TiO2(110) prepared by UHV-compatible electrospray deposition. Surface Science, 735, Article 122323. https://doi.org/10.1016/j.susc.2023.122323

We present an X-ray photoelectron spectroscopy (XPS) study of a series of organic triphenylamine-based organic dye molecules (D5, SC4 and R6) deposited onto an atomically clean TiO2(110) single crystal surface by vacuum-compatible electrospray deposi... Read More about The adsorption and XPS of triphenylamine-based organic dye molecules on rutile TiO2(110) prepared by UHV-compatible electrospray deposition.

Self-assembly and tiling of a prochiral hydrogen-bonded network: bi-isonicotinic acid on coinage metal surfaces (2023)
Journal Article
Allen, A., Abdur Rashid, M., Rahe, P., Jarvis, S. P., O'Shea, J. N., Dunn, J. L., & Moriarty, P. (2023). Self-assembly and tiling of a prochiral hydrogen-bonded network: bi-isonicotinic acid on coinage metal surfaces. Molecular Physics, 121(7-8), Article e2192824. https://doi.org/10.1080/00268976.2023.2192824

Submolecular resolution scanning tunnelling microscopy and qPlus atomic force microscopy reveal that, close to thermal equilibrium, bi-isonicotinic acid (4,4'-COOH-2,2'-bpy) assembles into extended molecular rows on both Au(111) and Ag(100) surfaces,... Read More about Self-assembly and tiling of a prochiral hydrogen-bonded network: bi-isonicotinic acid on coinage metal surfaces.

Covalent Template-Directed Synthesis of a Spoked 18-Porphyrin Nanoring** (2023)
Journal Article
Majewski, M. A., Stawski, W., Van Raden, J., Clarke, M., Hart, J., O'Shea, J., …Anderson, H. L. (2023). Covalent Template-Directed Synthesis of a Spoked 18-Porphyrin Nanoring**. Angewandte Chemie International Edition, Article 202302114. https://doi.org/10.1002/anie.202302114

Rings of porphyrins mimic natural light-harvesting chlorophyll arrays and offer insights into electronic delocalization, providing a motivation for creating larger nanorings with closely spaced porphyrin units. Here, we demonstrate the first synthesi... Read More about Covalent Template-Directed Synthesis of a Spoked 18-Porphyrin Nanoring**.

On-surface polymerisation and self-assembly of DPP-based molecular wires (2023)
Journal Article
Clarke, M., Bellamy-Carter, A., Malagreca, F., Hart, J., Argent, S. P., O'Shea, J. N., …Saywell, A. (2023). On-surface polymerisation and self-assembly of DPP-based molecular wires. Molecular Systems Design and Engineering, https://doi.org/10.1039/d2me00232a

The incorporation of organic semiconducting materials within solid-state electronic devices provides a potential route to highly efficient photovoltaics, transistors, and light emitting diodes. Key to the realisation of such devices is efficient intr... Read More about On-surface polymerisation and self-assembly of DPP-based molecular wires.

Nanostructured, Alkaline Titanate‐Converted, and Heat‐Treated Ti6Al4V Microspheres via Wet‐Chemical Alkaline Modification and their ORR Electrocatalytic Response (2022)
Journal Article
Wadge, M. D., Bird, M. A., Sankowski, A., Constantin, H., Fay, M. W., Cooper, T. P., …Grant, D. M. (2023). Nanostructured, Alkaline Titanate‐Converted, and Heat‐Treated Ti6Al4V Microspheres via Wet‐Chemical Alkaline Modification and their ORR Electrocatalytic Response. Advanced Materials Interfaces, 10(5), Article 2201523. https://doi.org/10.1002/admi.202201523

This study describes the chemical conversion and heat treatment of Ti6Al4V microspheres (Ti6_MS), and the resulting effects on their electrocatalytic properties. The wet-chemical conversion (5.0m NaOH, 60°C, 24h; Sample label: Ti6_TC) converts the to... Read More about Nanostructured, Alkaline Titanate‐Converted, and Heat‐Treated Ti6Al4V Microspheres via Wet‐Chemical Alkaline Modification and their ORR Electrocatalytic Response.

Bending a photonic wire into a ring (2022)
Journal Article
Gotfredsen, H., Deng, J. R., Van Raden, J. M., Righetto, M., Hergenhahn, J., Clarke, M., …Anderson, H. L. (2022). Bending a photonic wire into a ring. Nature Chemistry, 14(12), 1436–1442. https://doi.org/10.1038/s41557-022-01032-w

Natural light-harvesting systems absorb sunlight and transfer its energy to the reaction centre, where it is used for photosynthesis. Synthetic chromophore arrays provide useful models for understanding energy migration in these systems. Research has... Read More about Bending a photonic wire into a ring.

A soft x-ray probe of a titania photoelectrode sensitized with a triphenylamine dye (2021)
Journal Article
Temperton, R. H., Hart, J., Verykokkos, N., Gibson, E., & O’Shea, J. N. (2021). A soft x-ray probe of a titania photoelectrode sensitized with a triphenylamine dye. Journal of Chemical Physics, 154(23), 1-9. https://doi.org/10.1063/5.0050531

We present a thorough soft x-ray photoelectron spectroscopy (XPS) study of a mesoporous titanium dioxide electrode sensitized with the dye 4-(diphenylamino)phenylcyanoacrylic acid, referred to as “L0.” Supported by calculations, the suite of XPS, x-r... Read More about A soft x-ray probe of a titania photoelectrode sensitized with a triphenylamine dye.

Additively manufactured ultra-high vacuum chamber for portable quantum technologies (2021)
Journal Article
Cooper, N., Coles, L., Everton, S., Maskery, I., Campion, R., Madkhaly, S., …Hackermüller, L. (2021). Additively manufactured ultra-high vacuum chamber for portable quantum technologies. Additive Manufacturing, 40, Article 101898. https://doi.org/10.1016/j.addma.2021.101898

© 2021 Additive manufacturing is having a dramatic impact on research and industry across multiple sectors, but the production of additively manufactured systems for ultra-high vacuum applications has so far proved elusive and widely been considered... Read More about Additively manufactured ultra-high vacuum chamber for portable quantum technologies.

An in situ exploration of subsurface defect migration to a liquid water‐exposed rutile TiO2(110) surface by XPS (2020)
Journal Article
Ahmed, M. H. M., Temperton, R. H., & O'Shea, J. N. (2021). An in situ exploration of subsurface defect migration to a liquid water‐exposed rutile TiO2(110) surface by XPS. Surface and Interface Analysis, 53(12), 1013-1019. https://doi.org/10.1002/sia.6906

The ability of titanium dioixide to split water into OH− and H+ species is heavily dependent on the behaviour of defects in the crystal structure at or near the surface. We present an in situ study of defect migration in rutile TiO2(110) conducted us... Read More about An in situ exploration of subsurface defect migration to a liquid water‐exposed rutile TiO2(110) surface by XPS.

Highly efficient hydrogen evolution reaction, plasmon-enhanced by AuNP-l-TiO2NP photocatalysts (2020)
Journal Article
Castillo-Rodriguez, J., Ortiz, P. D., Isaacs, M., Martinez, N. P., O’Shea, J. N., Hart, J., …Schott, E. (2020). Highly efficient hydrogen evolution reaction, plasmon-enhanced by AuNP-l-TiO2NP photocatalysts. New Journal of Chemistry, 44(38), 16491-16500. https://doi.org/10.1039/d0nj03250f

A set of AuNPs-l-TiO2NP nanoaggregates which showed efficient covering of the semiconductor's surface by AuNPs, as well as appropriate AuNP sizes for effective sensibilization were used as photocatalysts for the hydrogen evolution reaction (HER). Thr... Read More about Highly efficient hydrogen evolution reaction, plasmon-enhanced by AuNP-l-TiO2NP photocatalysts.

Resonant inelastic X-ray scattering of a Ru photosensitizer: Insights from individual ligands to the electronic structure of the complete molecule (2019)
Journal Article
Temperton, R. H., Skowron, S. T., Handrup, K., Gibson, A. J., Nicolaou, A., Jaouen, N., …O’Shea, J. N. (2019). Resonant inelastic X-ray scattering of a Ru photosensitizer: Insights from individual ligands to the electronic structure of the complete molecule. Journal of Chemical Physics, 151(7), 1-9. https://doi.org/10.1063/1.5114692

N 1s Resonant Inelastic X-ray Scattering (RIXS) was used to probe the molecular electronic structure of the ruthenium photosensitizer complex cis-bis(isothiocyanato) bis(2,2′-bipyridyl-4,4′-dicarboxylato) ruthenium(II), known as “N3.” In order to int... Read More about Resonant inelastic X-ray scattering of a Ru photosensitizer: Insights from individual ligands to the electronic structure of the complete molecule.

Hybrid light emitting diodes based on stable, high brightness all-inorganic CsPbI 3 perovskite nanocrystals and InGaN (2019)
Journal Article
Zhang, C., Turyanska, L., Cao, H., Zhao, L., Fay, M. W., Temperton, R., …Patanè, A. (2019). Hybrid light emitting diodes based on stable, high brightness all-inorganic CsPbI 3 perovskite nanocrystals and InGaN. Nanoscale, 11(28), 13450-13457. https://doi.org/10.1039/C9NR03707A

Despite important advances in the synthesis of inorganic perovskite nanocrystals (NCs), the long-term instability and degradation of their quantum yield (QY) over time need to be addressed to enable the further development and exploitation of these n... Read More about Hybrid light emitting diodes based on stable, high brightness all-inorganic CsPbI 3 perovskite nanocrystals and InGaN.

Direct synthesis of multiplexed metal nanowire based devices using carbon nanotubes as vector templates (2019)
Journal Article
Clément, P., Xu, X., Stoppiello, C. T., Rance, G. A., Attanzio, A., O’Shea, J. N., …Palma, M. (2019). Direct synthesis of multiplexed metal nanowire based devices using carbon nanotubes as vector templates. Angewandte Chemie International Edition, 58(29), 9928-9932. https://doi.org/10.1002/anie.201902857

We present the synthesis of metal nanowires in a multiplexed device configuration using single-walled carbon nanotubes (SWNTs) as nanoscale vector templates. The SWNT templates control the dimensionality of the wires, allowing precise control of thei... Read More about Direct synthesis of multiplexed metal nanowire based devices using carbon nanotubes as vector templates.

In-situ XPS analysis of the atomic layer deposition of aluminium oxide on titanium dioxide (2018)
Journal Article
Temperton, R., Gibson, A., & O'Shea, J. (2018). In-situ XPS analysis of the atomic layer deposition of aluminium oxide on titanium dioxide. Physical Chemistry Chemical Physics, 21(3), 1393-1398. https://doi.org/10.1039/c8cp06912c

Ultra-thin aluminium oxide was grown on a rutile titanium dioxide surface by atomic layer deposition using trimethylaluminium and water precursors. This process, carried out using realistic temperatures and pressures (1 mbar, 450 K), was monitored in... Read More about In-situ XPS analysis of the atomic layer deposition of aluminium oxide on titanium dioxide.