Outputs (39)

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.

Defect-Induced Doping and Chemisorption of O2 in Se Deficient GaSe Monolayers (2024)
Journal Article
Bradford, J., Rahman, K., Felton, J., Shiffa, M., Cheng, T. S., Beton, P. H., Saywell, A., Greenaway, M., Novikov, S. V., O'Shea, J. N., & Patane, A. (2024). Defect-Induced Doping and Chemisorption of O2 in Se Deficient GaSe Monolayers. 2D Materials, 12(1), Article 015019. https://doi.org/10.1088/2053-1583/ad9d57

Owing to their atomically thin nature, structural defects in two-dimensional materials often play a dominating role in their electronic and optical properties. Here, we grow epitaxial GaSe monolayers on graphene/SiC by molecular beam epitaxy and char... Read More about Defect-Induced Doping and Chemisorption of O2 in Se Deficient GaSe Monolayers.

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.

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.

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 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.

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.

Adsorption structure of iron phthalocyanine and titanyl phthalocyanine on Cu(1 1 1) (2023)
Journal Article
Stoodley, M. A., Klein, B. P., Clarke, M., Williams, L. B., Rochford, L. A., Ferrer, P., Grinter, D. C., Saywell, A., & Duncan, D. A. (2023). Adsorption structure of iron phthalocyanine and titanyl phthalocyanine on Cu(1 1 1). Inorganica Chimica Acta, 557, Article 121679. https://doi.org/10.1016/j.ica.2023.121679

The adsorption structure of iron phthalocyanine (FePc) and titanyl phthalocyanine (TiOPc) was studied by a combination of near edge X-ray absorption fine structure (NEXAFS) spectroscopy and normal incidence X-ray standing waves (NIXSW) technique. The... Read More about Adsorption structure of iron phthalocyanine and titanyl phthalocyanine on Cu(1 1 1).