Dr David Duncan's Outputs (6)

Using polycyclic aromatic hydrocarbons for graphene growth on Cu(111) under ultra-high vacuum (2022)
Journal Article
Klein, B. P., Stoodley, M. A., Edmondson, M., Rochford, L. A., Walker, M., Sattler, L., Weber, S. M., Hilt, G., Williams, L. B. S., Lee, T.-L., Saywell, A., Maurer, R. J., & Duncan, D. A. (2022). Using polycyclic aromatic hydrocarbons for graphene growth on Cu(111) under ultra-high vacuum. Applied Physics Letters, 121(19), Article 191603. https://doi.org/10.1063/5.0122914

Ultra-high vacuum deposition of the polycyclic aromatic hydrocarbons azupyrene and pyrene onto a Cu(111) surface held at a temperature of 1000 K is herein shown to result in the formation of graphene. The presence of graphene was proven using scannin... Read More about Using polycyclic aromatic hydrocarbons for graphene growth on Cu(111) under ultra-high vacuum.

N-Heterocyclic Carbenes: Molecular Porters of Surface Mounted Ru-Porphyrins (2022)
Journal Article
Knecht, P., Meier, D., Reichert, J., Duncan, D. A., Schwarz, M., Küchle, J. T., Lee, T., Deimel, P. S., Feulner, P., Allegretti, F., Auwärter, W., Médard, G., Seitsonen, A. P., Barth, J. V., & Papageorgiou, A. C. (2022). N-Heterocyclic Carbenes: Molecular Porters of Surface Mounted Ru-Porphyrins. Angewandte Chemie International Edition, 61(49), Article e202211877. https://doi.org/10.1002/anie.202211877

Ru-porphyrins act as convenient pedestals for the assembly of N-heterocyclic carbenes (NHCs) on solid surfaces. Upon deposition of a simple NHC ligand on a close packed Ru-porphyrin monolayer, an extraordinary phenomenon can be observed: Ru-porphyrin... Read More about N-Heterocyclic Carbenes: Molecular Porters of Surface Mounted Ru-Porphyrins.

Silicene’s pervasive surface alloy on Ag(111): a scaffold for two-dimensional growth (2022)
Journal Article
Küchle, J. T., Baklanov, A., Seitsonen, A. P., Ryan, P. T. P., Feulner, P., Pendem, P., Lee, T.-L., Muntwiler, M., Schwarz, M., Haag, F., Barth, J. V., Auwärter, W., Duncan, D. A., & Allegretti, F. (2022). Silicene’s pervasive surface alloy on Ag(111): a scaffold for two-dimensional growth. 2D Materials, 9(4), Article 045021. https://doi.org/10.1088/2053-1583/ac8a01

Silicene, the two-dimensional (2D) allotrope of silicon, is a promising material for electronics. So far, the most direct synthesis strategy has been to grow it epitaxially on metal surfaces; however, the effect of the strong silicon-metal interactio... Read More about Silicene’s pervasive surface alloy on Ag(111): a scaffold for two-dimensional growth.

Direct Experimental Evidence for Substrate Adatom Incorporation into a Molecular Overlayer (2022)
Journal Article
Mousley, P. J., Rochford, L. A., Ryan, P. T. P., Blowey, P., Lawrence, J., Duncan, D. A., Hussain, H., Sohail, B., Lee, T.-L., Bell, G. R., Costantini, G., Maurer, R. J., Nicklin, C., & Woodruff, D. P. (2022). Direct Experimental Evidence for Substrate Adatom Incorporation into a Molecular Overlayer. Journal of Physical Chemistry C, 126(16), 7346-7355. https://doi.org/10.1021/acs.jpcc.2c01432

While the phenomenon of metal substrate adatom incorporation into molecular overlayers is generally believed to occur in several systems, the experimental evidence for this relies on the interpretation of scanning tunneling microscopy (STM) images, w... Read More about Direct Experimental Evidence for Substrate Adatom Incorporation into a Molecular Overlayer.

Thermodynamic Driving Forces for Substrate Atom Extraction by Adsorption of Strong Electron Acceptor Molecules (2022)
Journal Article
Ryan, P., Blowey, P. J., Sohail, B. S., Rochford, L. A., Duncan, D. A., Lee, T.-L., Starrs, P., Costantini, G., Maurer, R. J., & Woodruff, D. P. (2022). Thermodynamic Driving Forces for Substrate Atom Extraction by Adsorption of Strong Electron Acceptor Molecules. Journal of Physical Chemistry C, 126(13), 6082-6090. https://doi.org/10.1021/acs.jpcc.2c00711

A quantitative structural investigation is reported, aimed at resolving the issue of whether substrate adatoms are incorporated into the monolayers formed by strong molecular electron acceptors deposited onto metallic electrodes. A combination of nor... Read More about Thermodynamic Driving Forces for Substrate Atom Extraction by Adsorption of Strong Electron Acceptor Molecules.

Spatial variation of geometry, binding, and electronic properties in the moiré superstructure of MoS2 on Au(111) (2022)
Journal Article
Silva, C. C., Dombrowski, D., Atodiresei, N., Jolie, W., Farwick zum Hagen, F., Cai, J., Ryan, P. T. P., Thakur, P. K., Caciuc, V., Blügel, S., Duncan, D. A., Michely, T., Lee, T.-L., & Busse, C. (2022). Spatial variation of geometry, binding, and electronic properties in the moiré superstructure of MoS2 on Au(111). 2D Materials, 9(2), Article 025003. https://doi.org/10.1088/2053-1583/ac4958

The lattice mismatch between a monolayer of MoS2 and its Au(111) substrate induces a moiré superstructure. The local variation of the registry between sulfur and gold atoms at the interface leads to a periodic pattern of strongly and weakly interacti... Read More about Spatial variation of geometry, binding, and electronic properties in the moiré superstructure of MoS2 on Au(111).