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Physisorption controls the conformation and density of states of an adsorbed porphyrin (2015)
Journal Article
Jarvis, S. P., Taylor, S., Baran, J. D., Thompson, D., Saywell, A., Mangham, B., Champness, N. R., Larsson, J. A., & Moriarty, P. (2015). Physisorption controls the conformation and density of states of an adsorbed porphyrin. Journal of Physical Chemistry C, 119(50), 27982-27994. https://doi.org/10.1021/acs.jpcc.5b08350

Conformational changes caused by adsorption can dramatically affect a molecule’s properties. Despite extensive study, however, the exact mechanisms underpinning conformational switching are often unclear. Here we show that the conformation of a proto... Read More about Physisorption controls the conformation and density of states of an adsorbed porphyrin.

Vernier-Templated Synthesis, Crystal Structure, and Supramolecular Chemistry of a 12-Porphyrin Nanoring (2014)
Journal Article
Kondratuk, D. V., Sprafke, J. K., O'Sullivan, M. C., Perdigão, L. M., Saywell, A., Malfois, M., O'Shea, J. N., Beton, P. H., Thompson, A. L., & Anderson, H. L. (2014). Vernier-Templated Synthesis, Crystal Structure, and Supramolecular Chemistry of a 12-Porphyrin Nanoring. Chemistry - A European Journal, 20(40), 12826-12834. https://doi.org/10.1002/chem.201403714

Vernier templating exploits a mismatch between the number of binding sites in a template and a reactant to direct the formation of a product that is large enough to bind several template units. Here, we present a detailed study of the Vernier-templat... Read More about Vernier-Templated Synthesis, Crystal Structure, and Supramolecular Chemistry of a 12-Porphyrin Nanoring.

Manipulating the Conformation of Single Organometallic Chains on Au(111) (2013)
Journal Article
Saywell, A., Greń, W., Franc, G., Gourdon, A., Bouju, X., & Grill, L. (2014). Manipulating the Conformation of Single Organometallic Chains on Au(111). Journal of Physical Chemistry C, 118(3), 1719-1728. https://doi.org/10.1021/jp409323g

The conformations of organometallic polymers formed via the bottom-up assembly of monomer units on a metal surface are investigated, and the relationship between the adsorption geometry of the individual monomer units, the conformational structure of... Read More about Manipulating the Conformation of Single Organometallic Chains on Au(111).

Polymerization on Stepped Surfaces: Alignment of Polymers and Identification of Catalytic Sites (2012)
Journal Article
Saywell, A., Schwarz, J., Hecht, S., & Grill, L. (2012). Polymerization on Stepped Surfaces: Alignment of Polymers and Identification of Catalytic Sites. Angewandte Chemie International Edition, 51(21), 5096 - 5100. https://doi.org/10.1002/anie.201200543

Kinky catalysis: Surface defects, such as step edges and kinks, are thought to be the ‘active sites’ that induce site-specific chemical reactions on catalytic materials. The catalytic dissociation of a bromine atom from an organic molecule is shown t... Read More about Polymerization on Stepped Surfaces: Alignment of Polymers and Identification of Catalytic Sites.

Toward a Light-Driven Motorized Nanocar: Synthesis and Initial Imaging of Single Molecules (2011)
Journal Article
Chiang, P.-T., Mielke, J., Godoy, J., Guerrero, J. M., Alemany, L. B., Villagómez, C. J., Saywell, A., Grill, L., & Tour, J. M. (2012). Toward a Light-Driven Motorized Nanocar: Synthesis and Initial Imaging of Single Molecules. ACS Nano, 6(1), 592–597. https://doi.org/10.1021/nn203969b

A second generation motorized nanocar was designed, synthesized, and imaged. To verify structural integrity, NMR-based COSY, NOESY, DEPT, HSQC, and HMBC experiments were conducted on the intermediate motor. All signals in 1H NMR were unambiguously as... Read More about Toward a Light-Driven Motorized Nanocar: Synthesis and Initial Imaging of Single Molecules.

Haptic-STM: A human-in-the-loop interface to a scanning tunneling microscope (2011)
Journal Article
Perdigão, L. M., & Saywell, A. (2011). Haptic-STM: A human-in-the-loop interface to a scanning tunneling microscope. Review of Scientific Instruments, 82(7), Article 073704. https://doi.org/10.1063/1.3600572

The operation of a haptic device interfaced with a scanning tunneling microscope (STM) is presented here. The user moves the STM tip in three dimensions by means of a stylus attached to the haptic instrument. The tunneling current measured by the STM... Read More about Haptic-STM: A human-in-the-loop interface to a scanning tunneling microscope.

Vernier templating and synthesis of a 12-porphyrin nano-ring (2011)
Journal Article
O’Sullivan, M. C., Sprafke, J. K., Kondratuk, D. V., Rinfray, C., Claridge, T. D., Saywell, A., Blunt, M. O., O’Shea, J. N., Beton, P. H., Malfois, M., & Anderson, H. L. (2011). Vernier templating and synthesis of a 12-porphyrin nano-ring. Nature, 469, 72–75. https://doi.org/10.1038/nature09683

Templates are widely used to arrange molecular components so they can be covalently linked into complex molecules that are not readily accessible by classical synthetic methods1,2,3,4,5,6,7. Nature uses sophisticated templates such as the ribosome, w... Read More about Vernier templating and synthesis of a 12-porphyrin nano-ring.

Self-assembled aggregates formed by single-molecule magnets on a gold surface (2010)
Journal Article
Saywell, A., Magnano, G., Satterley, C. J., Perdigão, L. M., Britton, A. J., Taleb, N., Del Carmen Giménez-López, M., Champness, N. R., O'Shea, J. N., & Beton, P. H. (2010). Self-assembled aggregates formed by single-molecule magnets on a gold surface. Nature Communications, 1(6), Article 75. https://doi.org/10.1038/ncomms1075

The spontaneous ordering of molecules into two-dimensional self-assembled arrays is commonly stabilized by directional intermolecular interactions that may be promoted by the addition of specific chemical side groups to a molecule. In this paper, we... Read More about Self-assembled aggregates formed by single-molecule magnets on a gold surface.