Outputs (16)

Inter- and Intramolecular On-Surface Synthesis of Porphyrin-Based Nanostructures on Au(111) and Cu(111) (2025)
Journal Article
Frampton, E. S., Clarke, M., Edmondson, M., Gray, A., Bradford, J., Warwick, L., Pearce, N., Champness, N. R., & Saywell, A. (2025). Inter- and Intramolecular On-Surface Synthesis of Porphyrin-Based Nanostructures on Au(111) and Cu(111). ACS Applied Nano Materials, 8(24), 12608-12618. https://doi.org/10.1021/acsanm.5c01525

Surface-confined synthesis provides alternative reaction pathways to those utilized within solution-phase chemistry and offers a route to extended molecular architectures with nanoscale dimensions and fascinating magnetic, electronic, and catalytic p... Read More about Inter- and Intramolecular On-Surface Synthesis of Porphyrin-Based Nanostructures on Au(111) and Cu(111).

Asymmetric thiol-modified hybrid polyoxometalates: building blocks for hierarchical nanostructured redox materials (2025)
Journal Article
Newton, G. N., Hampson, E., Kibler, A. J., Cameron, J. M., Watts, J. A., Bellamy-Carter, A., Saywell, A., Johnson, L. R., & Walsh, D. A. (2025). Asymmetric thiol-modified hybrid polyoxometalates: building blocks for hierarchical nanostructured redox materials. Nanoscale, https://doi.org/10.1039/d5nr00544b

The development of hierarchical, redox-active nanostructures can drive new advances in fields ranging from energy storage to sensors and memristors. The self assembly of redox-active molecular building blocks into redox-active structures is especiall... Read More about Asymmetric thiol-modified hybrid polyoxometalates: building blocks for hierarchical nanostructured redox materials.

Experimental Demonstration of a Spectral Fingerprint for the Saddle and Inverted Conformations of Porphyrins on Copper (2025)
Journal Article
S. Frampton, E., Gray, A., Clarke, M., Edmondson, M., Bradford, J., A. Duncan, D., & Saywell, A. (2025). Experimental Demonstration of a Spectral Fingerprint for the Saddle and Inverted Conformations of Porphyrins on Copper. Journal of Physical Chemistry Letters, 16(20), 5012–5017. https://doi.org/10.1021/acs.jpclett.5c00498

Combined density functional theory (DFT) and X-ray standing wave (XSW) studies have previously provided evidence for the preferential adoption of an inverted conformation of 2H-TPP on Cu(111) in contrast to the saddle conformation usually favored by... Read More about Experimental Demonstration of a Spectral Fingerprint for the Saddle and Inverted Conformations of Porphyrins on Copper.

On-Surface Synthesis of Ni-Porphyrin-Doped Graphene Nanoribbons (2024)
Journal Article
Edmondson, M., Clarke, M., O’Shea, J. N., Chen, Q., Anderson, H. L., & Saywell, A. (2024). On-Surface Synthesis of Ni-Porphyrin-Doped Graphene Nanoribbons. ACS Nano, 18(49), 33390–33397. https://doi.org/10.1021/acsnano.4c09188

On-surface synthesis of functional molecular structures provides a route to the fabrication of materials tailored to exhibit bespoke catalytic, (opto)electronic, and magnetic properties. The fabrication of graphene nanoribbons via on-surface synthesi... Read More about On-Surface Synthesis of Ni-Porphyrin-Doped Graphene Nanoribbons.

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., Hart, J., O'Shea, J. N., Duarte, F., Saywell, A., & Anderson, H. L. (2024). Template‐Directed Synthesis of Strained meso‐meso‐Linked Porphyrin Nanorings. Angewandte Chemie, 136(14), Article e202400103. https://doi.org/10.1002/ange.202400103

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

Self-metalation of tetraphenyl porphyrin on Au(111): Structural characterisation via X-ray standing wave analysis (2023)
Journal Article
Frampton, E. S., Edmondson, M., Judd, C. J., Duncan, D. A., Jones, R. G., & Saywell, A. (2023). Self-metalation of tetraphenyl porphyrin on Au(111): Structural characterisation via X-ray standing wave analysis. Inorganica Chimica Acta, 558, Article 121718. https://doi.org/10.1016/j.ica.2023.121718

The study of surface-confined reactions provides a route towards characterising the mechanistic processes which underpin heterogeneous catalysis. On-surface reactions provide alternative pathways to solution phase synthesis, and can be studied by a r... Read More about Self-metalation of tetraphenyl porphyrin on Au(111): Structural characterisation via X-ray standing wave analysis.

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., Amabilino, D. B., & Saywell, A. (2023). On-surface polymerisation and self-assembly of DPP-based molecular wires. Molecular Systems Design and Engineering, 8(5), 681-689. 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.

Order, disorder, and metalation of tetraphenylporphyrin (2H-TPP) on Au(111) (2022)
Journal Article
Edmondson, M., Frampton, E. S., Judd, C. J., Champness, N. R., Jones, R. G., & Saywell, A. (2022). Order, disorder, and metalation of tetraphenylporphyrin (2H-TPP) on Au(111). Chemical Communications, 58(42), 6247–6250. https://doi.org/10.1039/d2cc00820c

A thermally induced order–disorder transition of tetraphenylporphyrin (2H-TPP) on Au(111) is characterised by scanning probe microscopy and X-ray photoelectron spectroscopy-based techniques. We observed that a transition from an ordered close-packed... Read More about Order, disorder, and metalation of tetraphenylporphyrin (2H-TPP) on Au(111).

Molecular Quantum Rings Formed from a π -Conjugated Macrocycle (2020)
Journal Article
Judd, C. J., Nizovtsev, A. S., Plougmann, R., Kondratuk, D. V., Anderson, H. L., Besley, E., & Saywell, A. (2020). Molecular Quantum Rings Formed from a π -Conjugated Macrocycle. Physical Review Letters, 125(20), Article 206803. https://doi.org/10.1103/PhysRevLett.125.206803

The electronic structure of a molecular quantum ring (stacks of 40-unit cyclic porphyrin polymers) is characterized via scanning tunneling microscopy and scanning tunneling spectroscopy. Our measurements access the energetic and spatial distribution... Read More about Molecular Quantum Rings Formed from a π -Conjugated Macrocycle.

Structural characterisation of molecular conformation and the incorporation of adatoms in an on-surface Ullmann-type reaction (2020)
Journal Article
Judd, C. J., Junqueira, F. L. Q., Haddow, S. L., Champness, N. R., Duncan, D. A., Jones, R. G., & Saywell, A. (2020). Structural characterisation of molecular conformation and the incorporation of adatoms in an on-surface Ullmann-type reaction. Communications Chemistry, 3(1), Article 166. https://doi.org/10.1038/s42004-020-00402-0

© 2020, The Author(s). The on-surface synthesis of covalently bonded materials differs from solution-phase synthesis in several respects. The transition from a three-dimensional reaction volume to quasi-two-dimensional confinement, as is the case for... Read More about Structural characterisation of molecular conformation and the incorporation of adatoms in an on-surface Ullmann-type reaction.