Publications

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Holleufer, S. F., Hvidt, U. G., Kolasseri, I. A., Chen, Y. P., Li, Z., Lauritsen, J. V., Hornekær, L. & Cassidy, A. (2026). Formation and oxygen intercalation of vitreous 2D silica bilayer films on Ir(111). Physical Chemistry Chemical Physics. Advance online publication. https://doi.org/10.1039/d5cp04298d

Hopkinson, A. T., Wilson, A. M., Pitfield, J., Muiña, A. T., Rácz, R., Mifsud, D. V., Herczku, P., Lakatos, G., Sulik, B., Juhász, Z., Biri, S., McCullough, R. W., Mason, N. J., Scavenius, C., Hornekær, L. & Ioppolo, S. (2026). An interstellar energetic and non-aqueous pathway to peptide formation. Nature Astronomy. Advance online publication. https://doi.org/10.1038/s41550-025-02765-7

Hopkinson, A. T., Doktor, F. G., Pitfield, J., Moll, M., Thrower, J. D. & Hornekær, L. (2026). Formation of methane and cyclohexane through the hydrogenation of toluene. Astronomy and Astrophysics, 706, Artikel A135. https://doi.org/10.1051/0004-6361/202556920

Samarth, P., Fedoseev, G., Bulak, M., Ioppolo, S., Hornekær, L., Van Dishoeck, E. F., Linnartz, H. & Chuang, K. J. (2026). In situ characterization of volatile and refractory hydrocarbons produced by UV photolysis of interstellar C ₂H ₂ice. Astronomy and Astrophysics, 705, Artikel A229. https://doi.org/10.1051/0004-6361/202556672

Doktor, F. G., Mikkelsen, N. M., Kyrkjebø, S., Srivastava, P. K., Balog, R., Hammer, B., Morgenstern, K. & Hornekær, L. (2025). Water Nucleation via Transient Bonds to Oxygen-Functionalized Graphite. The Journal of Physical Chemistry Part C, 129(11), 5718-5727. https://doi.org/10.1021/acs.jpcc.4c08614

Holleufer, S. F., Hopkinson, A. T., Sutherland, D. S., Li, Z., Lauritsen, J. V., Hornekær, L. & Cassidy, A. (2025). Silicon oxide nanoparticles grown on graphite by co-deposition of the atomic constituents. Physical Chemistry Chemical Physics, 27(26), 13906-13916. https://doi.org/10.1039/d5cp01089f

Kanuchová, Z., Borchert, L. E., Mifsud, D. V., Traspas Muiña, A., Wilson, A. M., Prochal, M., Jones, N. C., Hoffmann, S. V., Cassidy, A., Hornekær, L., Mason, N. J., Strazzulla, G. & Ioppolo, S. (2025). Vacuum ultraviolet photoabsorption spectroscopy of space-related ices: Formation of (cyano)polyynes in 1 keV electron irradiated hydrocarbon-rich ices. Astronomy & Astrophysics (A&A), 700, Artikel A115. https://doi.org/10.1051/0004-6361/202554933

Slumstrup, L., Thrower, J. D., Hopkinson, A. T., Wenzel, G., Jaganathan, R., Schrauwen, J. G. M., Redlich, B., Ioppolo, S. & Hornekær, L. (2025). CO desorption from interstellar icy grains induced by infrared excitation of superhydrogenated polycyclic aromatic hydrocarbons. Astronomy and Astrophysics, 704, Artikel A74. https://doi.org/10.1051/0004-6361/202556399

Slumstrup, L., Thrower, J. D., Schrauwen, J. G. M., Lamberts, T., Ingman, E. R., Laurinavicius, D., DeVine, J., Terwisscha van Scheltinga, J., Santos, J. C., Noble, J. A., Wenzel, G., McCoustra, M. R. S., Brown, W. A., Linnartz, H., Hornekær, L., Cuppen, H. M., Redlich, B. & Ioppolo, S. (2025). IR-Induced CO Photodesorption from Pure CO Ice and CO on Amorphous Solid Water. ACS Earth and Space Chemistry, 9(6), 1607-1621. https://doi.org/10.1021/acsearthspacechem.5c00040

Tang, Z., Doktor, F. G., Jaganathan, R., Palotás, J., Oomens, J., Hornekær, L. & Hammer, B. (2025). Anharmonic infrared spectra of cationic pyrene and superhydrogenated derivatives. Journal of Chemical Physics, 163(4), Artikel 044304. https://doi.org/10.1063/5.0276133

Chown, R., Sidhu, A., Peeters, E., Tielens, A. G. G. M., Cami, J., Berné, O., Habart, E., Alarcón, F., Canin, A., Schroetter, I., Trahin, B., Van De Putte, D., Abergel, A., Bergin, E. A., Bernard-Salas, J., Boersma, C., Bron, E., Cuadrado, S., Dartois, E. ... Zhen, J. (2024). PDRs4All: IV. An embarrassment of riches: Aromatic infrared bands in the Orion Bar. Astronomy and Astrophysics, 685, Artikel A75. https://doi.org/10.1051/0004-6361/202346662

De Putte, D. V., Meshaka, R., Trahin, B., Habart, E., Peeters, E., Berné, O., Alarcón, F., Canin, A., Chown, R., Schroetter, I., Sidhu, A., Boersma, C., Bron, E., Dartois, E., Goicoechea, J. R., Gordon, K. D., Onaka, T., Tielens, A. G. G. M., Verstraete, L. ... Zhen, J. (2024). PDRs4All VIII. Mid-infrared emission line inventory of the Orion Bar. Astronomy and Astrophysics, 687, Artikel A86. https://doi.org/10.1051/0004-6361/202449295

Habart, E., Peeters, E., Berné, O., Trahin, B., Canin, A., Chown, R., Sidhu, A., De Putte, D. V., Alarcón, F., Schroetter, I., Dartois, E., Vicente, S., Abergel, A., Bergin, E. A., Bernard-Salas, J., Boersma, C., Bron, E., Cami, J., Cuadrado, S. ... Zhen, J. (2024). PDRs4All II. JWST’s NIR and MIR imaging view of the Orion Nebula. Astronomy and Astrophysics, 685, Artikel A73. https://doi.org/10.1051/0004-6361/202346747

Liu, L., Ji, Y., Bianchi, M., Hus, S. M., Li, Z., Balog, R., Miwa, J. A., Hofmann, P., Li, A. P., Zemlyanov, D. Y., Li, Y. & Chen, Y. P. (2024). A metastable pentagonal 2D material synthesized by symmetry-driven epitaxy. Nature Materials, 23(10), 1339-1346. https://doi.org/10.1038/s41563-024-01987-w

Peeters, E., Habart, E., Berné, O., Sidhu, A., Chown, R., Van De Putte, D., Trahin, B., Schroetter, I., Canin, A., Alarcón, F., Schefter, B., Khan, B., Pasquini, S., Tielens, A. G. G. M., Wolfire, M. G., Dartois, E., Goicoechea, J. R., Maragkoudakis, A., Onaka, T. ... Zhen, J. (2024). PDRs4All: III. JWST's NIR spectroscopic view of the Orion Bar. Astronomy and Astrophysics, 685, Artikel A74. https://doi.org/10.1051/0004-6361/202348244

Simonsen, F. D. S., Jaganathan, R., Palotás, J., Tang, Z., Hammer, B., Oomens, J. & Hornekær, L. (2024). Molecular Hydrogen Formation via Vibrational Excitation of Partially Superhydrogenated Pyrenes. Astrophysical Journal, 972(1), Artikel 42. https://doi.org/10.3847/1538-4357/ad5bd8

Zhang, J., Traspas Muiña, A., Mifsud, D. V., Kaňuchová, Z., Cielinska, K., Herczku, P., Rahul, K. K., Kovács, S. T. S., Rácz, R., Santos, J. C., Hopkinson, A. T., Craciunescu, L., Jones, N. C., Hoffmann, S. V., Biri, S., Vajda, I., Rajta, I., Dawes, A., Sivaraman, B. ... Ioppolo, S. (2024). A systematic IR and VUV spectroscopic investigation of ion, electron, and thermally processed ethanolamine ice. Monthly Notices of the Royal Astronomical Society, 533(1), 826-840. https://doi.org/10.1093/mnras/stae1860

Cassidy, A., McCoustra, M. R. S. & Field, D. (2023). A Spontaneously Electrical State of Matter. Accounts of Chemical Research, 56(14), 1909-1919. https://doi.org/10.1021/acs.accounts.3c00094

Cassidy, A., Pijpers, F. P. & Field, D. (2023). Hidden singularities in spontaneously polarized molecular solids. Journal of Chemical Physics, 158(14), Artikel 144501. https://doi.org/10.1063/5.0138642

Kyrkjebø, S., Cassidy, A., Lambrick, S., Jardine, A., Holst, B. & Hornekær, L. (2023). ³He spin-echo scattering indicates hindered diffusion of isolated water molecules on graphene-covered Ir(111). Frontiers in Chemistry, 11, Artikel 1229546. https://doi.org/10.3389/fchem.2023.1229546

Leccese, M., Jaganathan, R., Slumstrup, L., Thrower, J. D., Hornekær, L. & Martinazzo, R. (2023). Bending the rules of PAH hydrogenation: the case of corannulene. Monthly Notices of the Royal Astronomical Society, 519(4), 5567-5578. https://doi.org/10.1093/mnras/stad054

Rasmussen, A. P., Wenzel, G., Hornekær, L. & Andersen, L. H. (2023). Gas-phase electronic action absorption spectra of protonated oxygen-functionalized polycyclic aromatic hydrocarbons (OPAHs). Astronomy and Astrophysics, 674, Artikel A103. https://doi.org/10.1051/0004-6361/202346003

Berné, O., Habart, É., Peeters, E., Abergel, A., Bergin, E. A., Bernard-Salas, J., Bron, E., Cami, J., Dartois, E., Fuente, A., Goicoechea, J. R., Gordon, K. D., Okada, Y., Onaka, T., Robberto, M., Röllig, M., Tielens, A. G. G. M., Vicente, S., Wolfire, M. G. ... Zhen, J. (2022). PDRs4All: A JWST Early Release Science Program on Radiative Feedback from Massive Stars. Publications of the Astronomical Society of the Pacific, 134(1035), Artikel 054301. https://doi.org/10.1088/1538-3873/ac604c

Brodszkij, E., Westensee, I. N., Holleufer, S. F., Ade, C., Andres, P. D. D., Pedersen, J. S. & Städler, B. (2022). Membrane composition of polymer-lipid hybrid vesicles. Applied Materials Today, 29, Artikel 101549. https://doi.org/10.1016/j.apmt.2022.101549

Cassidy, A., James, R. L., Dawes, A. & Field, D. (2022). The rise of an exciton in solid ammonia. Chemical Communications, 58(6), 815-818. https://doi.org/10.1039/d1cc05520h

Jaganathan, R., Simonsen, F. D. S., Thrower, J. D. & Hornekaer, L. (2022). Enhanced reactivity of oxygen-functionalised PAHs with atomic hydrogen - A route to the formation of small oxygen-carrying molecules. Astronomy & Astrophysics (A&A), 663, Artikel A136. https://doi.org/10.1051/0004-6361/202243312

Kastorp, C. F. P., Duncan, D. A., Jorgensen, A. L., Scheffler, M., Thrower, J. D., Lee, T.-L., Hornekaer, L. & Balog, R. (2022). Selective hydrogenation of graphene on Ir(111): an X-ray standing wave study. Faraday Discussions, 236, 178-190. https://doi.org/10.1039/d1fd00122a

Tang, Z., Simonsen, F. D. S., Jaganathan, R., Palotas, J., Oomens, J., Hornekaer, L. & Hammer, B. (2022). Top-down formation of ethylene from fragmentation of superhydrogenated polycyclic aromatic hydrocarbons. Astronomy & Astrophysics (A&A), 663, Artikel A150. https://doi.org/10.1051/0004-6361/202243202

Cassidy, A., Jørgensen, M. R. V., Glavic, A., Lauter, V., Plekan, O. & Field, D. (2021). A mechanism for ageing in a deeply supercooled molecular glass. Chemical Communications, 57(52), 6368-6371. https://doi.org/10.1039/d1cc01639c

Cassidy, A., Jørgensen, M. R. V., Glavic, A., Lauter, V., Plekan, O. & Field, D. (2021). Low temperature aging in a molecular glass: The case of: cis -methyl formate. Physical Chemistry Chemical Physics, 23(29), 15719-15726. https://doi.org/10.1039/d1cp01332g

Kyrkjebø, S., Cassidy, A., Akhtar, N., Balog, R., Scheffler, M., Hornekær, L., Holst, B. & Flatabø, R. (2021). Graphene and graphene oxide on Ir(111) are transparent to wetting but not to icing. Carbon, 174, 396-403. https://doi.org/10.1016/j.carbon.2020.12.030

Mennella, V., Suhasaria, T., Hornekær, L., Thrower, J. D. & Mulas, G. (2021). Lyα irradiation of superhydrogenated coronene films: Implications for h₂ formation. Astrophysical Journal Letters, 908(1), Artikel L18. https://doi.org/10.3847/2041-8213/abddb9

Campisi, D., Simonsen, F. D. S., Thrower, J. D., Jaganathan, R., Hornekær, L., Martinazzo, R. & Tielens, A. G. G. M. (2020). Superhydrogenation of pentacene: The reactivity of zigzag-edges. Physical Chemistry Chemical Physics, 22(3), 1557-1565. https://doi.org/10.1039/c9cp05440e

Cassidy, A., James, R. L., Dawes, A. & Field, D. (2020). Crystallites and Electric Fields in Solid Ammonia. ChemistryOpen, 9(10), 983-990. https://doi.org/10.1002/open.202000118

Kastorp, C. F. P., Duncan, D. A., Scheffler, M., Thrower, J. D., Jørgensen, A. L., Hussain, H., Lee, T. L., Hornekær, L. & Balog, R. (2020). Growth and electronic properties of bi- And trilayer graphene on Ir(111). Nanoscale, 12(38), 19776-19786. https://doi.org/10.1039/d0nr04788k

Rizzo, D. J., Dai, Q., Bronner, C., Veber, G., Smith, B. J., Matsumoto, M., Thomas, S., Nguyen, G. D., Forrester, P. R., Zhao, W., Jørgensen, J. H., Dichtel, W. R., Fischer, F. R., Li, H., Bredas, J. L. & Crommie, M. F. (2020). Revealing the Local Electronic Structure of a Single-Layer Covalent Organic Framework through Electronic Decoupling. Nano Letters, 20(2), 963-970. https://doi.org/10.1021/acs.nanolett.9b03998

Spadaro, M. C., Cao, L., Terry, W., Balog, R., Yin, F. & Palmer, R. E. (2020). Size control of Au nanoparticles from the scalable and solvent-free matrix assembly cluster source. Journal of Nanoparticle Research, 22(6), Artikel 139. https://doi.org/10.1007/s11051-020-04869-9

Balog, R., Cassidy, A., Jørgensen, J. H., Hansen, L. K., Andersen, M., Grubisic Cabo, A., Ravani, F., Bignardi, L., Lacovig, P., Lizzit, S. & Hornekær, L. (2019). Hydrogen interaction with graphene on Ir(1 1 1): a combined intercalation and functionalization study. Journal of Physics: Condensed Matter, 31(8), Artikel 085001. https://doi.org/10.1088/1361-648X/aaf76b

Camilli, L., Yu, F., Cassidy, A., Hornekær, L. & Bøggild, P. (2019). Challenges for continuous graphene as a corrosion barrier. 2D materials, 6(2), Artikel 022002. https://doi.org/10.1088/2053-1583/ab04d4

Cassidy, A., Tsud, N., Bercha, S., Feyer, V., Prince, K. C. & Plekan, O. (2019). Adsorption of 5-Fluorouracil on Au(111) and Cu(111) surfaces. AIP Advances, 9(8), Artikel 5108801. https://doi.org/10.1063/1.5108801

Cassidy, A., James, R. L., Dawes, A., Lasne, J. & Field, D. (2019). The optical absorption spectra of spontaneously electrical solids: The case of nitrous oxide. Physical Chemistry Chemical Physics, 21(3), 1190-1197. https://doi.org/10.1039/c8cp05746j

Gronborg, S. S., Thorarinsdottir, K., Kyhl, L., Rodriguez-Fernández, J., Sanders, C. E., Bianchi, M., Hofmann, P., Miwa, J. A., Ulstrup, S. & Lauritsen, J. V. (2019). Basal plane oxygen exchange of epitaxial MoS₂ without edge oxidation. 2D materials, 6(4), Artikel 045013. https://doi.org/10.1088/2053-1583/ab2d00

Halkjær, S., Iversen, J., Kyhl, L., Chevallier, J., Andreatta, F., Yu, F., Stoot, A., Camilli, L., Bøggild, P., Hornekær, L. & Cassidy, A. M. (2019). Low-temperature synthesis of a graphene-based, corrosion-inhibiting coating on an industrial grade alloy. Corrosion Science, 152, 1-9. https://doi.org/10.1016/j.corsci.2019.01.029

Jensen, P. A., Leccese, M., Simonsen, F. D. S., Skov, A. W., Bonfanti, M., Thrower, J. D., Martinazzo, R. & Hornekær, L. (2019). Identification of stable configurations in the superhydrogenation sequence of polycyclic aromatic hydrocarbon molecules. Monthly Notices of the Royal Astronomical Society, 486(4), 5492-5498. https://doi.org/10.1093/mnras/stz1202

Jorgensen, A. L., Duncan, D. A., Kastorp, C. F. P., Kyhl, L., Tang, Z., Bruix, A., Andersen, M., Hammer, B., Lee, T.-L., Hornekaer, L. & Balog, R. (2019). Chemically-resolved determination of hydrogenated graphene-substrate interaction. Physical Chemistry Chemical Physics, 21(25), 13462-13466. https://doi.org/10.1039/c9cp02059d

Pantazidis, G., Scheffler, M., Simonsen, F. D. S., Cassidy, A., Jensen, P. A., Hornekær, L. & Thrower, J. D. (2019). Deuteration of C₆₀on a highly oriented pyrolytic graphite surface. Proceedings of the International Astronomical Union, 15(S356), 458-459. https://doi.org/10.1017/S1743921320000344

Cassidy, A., Pedersen, S., Bluhm, H., Calisti, V., Angot, T., Salomon, E., Bisson, R. & Hornekaer, L. (2018). Patterned formation of enolate functional groups on the graphene basal plane. Physical Chemistry Chemical Physics, 20(45), 28370-28374. https://doi.org/10.1039/c8cp05730c

Hansen, L. K., Balog, R., Cassidy, A., Jørgensen, J. H., Grubisic Cabo, A., Trotochaud, L., Bluhm, H. & Hornekær, L. (2018). Enhancing Graphene Protective Coatings by Hydrogen-Induced Chemical Bond Formation. ACS Applied Nano Materials, 1(9), 4509–4515. https://doi.org/10.1021/acsanm.8b00610

Kyhl, L., Bisson, R., Balog, R., Groves, M. N., Kolsbjerg, E. L., Cassidy, A. M., Jørgensen, J. H., Halkjær, S., Miwa, J. A., Čabo, A. G., Angot, T., Hofmann, P., Arman, M. A., Urpelainen, S., Lacovig, P., Bignardi, L., Bluhm, H., Knudsen, J., Hammer, B. & Hornekaer, L. (2018). Exciting H2 Molecules for Graphene Functionalization. ACS Nano, 12(1), 513-520. https://doi.org/10.1021/acsnano.7b07079

Roman, M., Dunn, A., Taj, S., Keolopile, Z. G., Rosu-Finsen, A., Gutowski, M., McCoustra, M. R. S., Cassidy, A. M. & Field, D. (2018). Assigning a structural motif using spontaneous molecular dipole orientation in thin films. Physical Chemistry Chemical Physics, 10(46), 29038-29044. https://doi.org/10.1039/c8cp06010j

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Revideret 29.01.2024