Professor Andrew Orr-Ewing Archives - Laser Chemistry, Spectroscopy & Dynamics Group

Perspective on a challenge: Predicting the photochemistry of cyclobutanone

Janoš, J., List, N. H., Orr-Ewing, A. J., Suchan, J., Barbatti, M., Bennett, O., Brady, M., Carmona-García, J., Crespo-Otero, R., Eng, J., Fajen, O. J., Garavelli, M., Gómez, S., Green, A. E., Hernández, F. J., Hollas, D., Hutton, L., Ibele, L. M., Kirrander, A. & Lan, Z. & 20 others, Lassmann, Y., Lawrence, J. E., Levine, B. G., Makhov, D. V., Mannouch, J. R., Miao, X., Mitrić, R., Parker, S. M., Penfold, T. J., Peng, J., Richardson, J. O., Shalashilin, D., Slavíček, P., Spinlove, K. E., Vindel-Zandbergen, P., Agostini, F., Bonella, S., Martínez, T. J., Worth, G. A. & Curchod, B. F. E., 14 Jul 2026, In: The Journal of Chemical Physics. 165, 2, 21 p., 020902.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Record carrier diffusion lengths in large, dense non-fullerene electron acceptor crystals grown from polar aromatic solvents

Halevi, T., Romain, T. A. L., Hume, P. A., Horton, P. N., Harniman, R. L., Orr-Ewing, A. J., Smith, J. A., Hall, S. R., Price, M. B. & al, E., 26 Jun 2026, (Accepted/In press) In: Journal of the American Chemical Society.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Temperature-Dependent Kinetics of the Methyl Vinyl Ketone Oxide Criegee Intermediate: Self-Reaction and Reaction with Trifluoroacetic Acid

Khodia, S., Reilly, E., Garavagno, M. D. L. A. & Orr-Ewing, A. J., 11 Jun 2026, In: Journal of Physical Chemistry A. 130, 23, p. 4411-4420 10 p.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Photobleaching of Imidazole Brown Carbon in Single Levitated Aerosol Particles

Zhang, X., Meehan, P., Knight, J. W., Orr-Ewing, A. J. & Cotterell, M. I., 11 Jun 2026, In: Journal of Physical Chemistry A. 130, 23, p. 4401-4410 10 p.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Accurate Quantification of Single Aerosol Particle Microphysical Properties using Broadband Light Scattering Spectroscopy

Rafferty, A., Orr-Ewing, A. J., Reid, J. P. & Cotterell, M. I., 30 Apr 2026, In: Journal of Physical Chemistry A. 130, 17, p. 3511-3524 14 p.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Efficient calculation of broadband light scattering spectra from spherical, homogeneous particles

Rafferty, A., Orr-Ewing, A. J., Reid, J. P. & Cotterell, M. I., 1 Jan 2026, In: Journal of Quantitative Spectroscopy and Radiative Transfer. 348, 14 p., 109708.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Atmospheric oxidation of hydrofluoroolefins and hydrochlorofluoroolefins by ozone produces HFC-23, PFC-14 and CFC-13

Garavagno, M. D. L. A., Wenger, A., Holland, R. E. T., Fena, B., Goldstein, S., Hicks, D., Liu, F., Madell, J., Solomon, S., Kuwata, K. T., McGillen, M., Khan, M. A. H., Shallcross, D. E., Stanley, K. M. & Orr-Ewing, A. J., 9 Dec 2025, In: Environmental Science and Technology. 59, 48, p. 26031-26040 10 p.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Global modeling of trifluoroacetic acid surface concentration and deposition from the gas-phase oxidation of a wide range of precursor hydrofluoroolefins

Khan, M. A. H., Mendes, D., Holland, R. E. T., Garavagno, M. D. L. A., Orr-Ewing, A. J., Stanley, K. M., O’Doherty, S., Young, D., Vollmer, M. K., Antony, A. J., Karamshahi, F., Wallington, T. J., Percival, C., Bacak, A., Derwent, R. G. & Shallcross, D. E., 2 Dec 2025, (E-pub ahead of print) In: Environmental Science: Atmospheres. 18 p.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Oxidative benzylic C(sp³)–H functionalisation of electron-poor substrates with photoexcited DDQ

Atkins, A. P., Smith, C. A., Ghosh, D., Greene, H. J. M., Binyahan, R. G., Greene, C. J., Tate, J. A., Orr-Ewing, A. J. & Lennox, A. J. J., 7 Nov 2025, In: Chemical Science. 16, 41, p. 19280-19287 8 p.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Investigating the ultraviolet photodissociation of bromocyclopropane with ultrafast electron diffraction

Lederer, J., Nunes, J. P., Rankine, C., Attar, A., Hegazy, K., Ji, F., Le, C., Lin, M.-F., Liu, Y., Luo, D., Orr-Ewing, A. J., Saha, S. K., Shen, X., Wang, X., Ware, M., Weathersby, S. P., Wilkin, K., Wolf, T. J. A., Xiong, Y. & Yang, J. & 1 others, Centurion, M., 7 Nov 2025, In: Journal of Chemical Physics. 163, 17, 11 p., 174306.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Time-resolved momentum imaging of UV photodynamics in structural isomers of iodopropane probed by site-selective XUV ionization

Allum, F., Kumagai, Y., Nagaya, K., Harries, J., Iwayama, H., Britton, M., Bucksbaum, P., Burt, M., Brouard, M., Downes-Ward, B., Driver, T., Heathcote, D., Hockett, P., Howard, A., Lee, J., Liu, Y., Kukk, E., McManus, J., Milesevic, D. & Minns, R. S. & 13 others, Niozu, A., Niskanen, J., Orr-Ewing, A. J., Owada, S., Robertson, P. A., Rolles, D., Rudenko, A., Ueda, K., Unwin, J., Vallance, C., Walmsley, T., Ashfold, M. N. R. & Forbes, R., 14 Oct 2025, In: Physical Chemistry Chemical Physics. 27, 38, p. 20602-20613 12 p.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Ultrafast Excited-State Dynamics of the Organic Photoredox Catalyst DDQ

Ghosh, D., Brieskorn, V., Smith, C. A., Greene, H. J. M., Binyahan, R., Hernandez, F. J., Lennox, A. J. J., Curchod, B. F. E. & Orr-Ewing, A. J., 9 Sept 2025, (E-pub ahead of print) In: Journal of Physical Chemistry Letters. 16, 37, p. 9748-9752 5 p.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Dynamic equilibrium between the fluorescent state of tryptophan and its cation-electron ion pair governs triplet state population

Kumar, R., Khan, S., Ghosh, D., Karras, G., Clark, I., Greetham, G. M., Oliver, T. A. A., Orr-Ewing, A. J. & Fielding, H., 3 Sept 2025, In: Journal of the American Chemical Society. 147, 35, p. 32064-32076 13 p.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

The Crucial Role of Solvent and Bound Oxygen on the Interplay of Cerium (III) and Cerium (IV) Chloride in a Photocatalytic Cycle for Organic Transformations

Venkatraman, R. K., Ghosh, D., Tolba, A. H., Sølling, T. I., Orr-Ewing, A. J. & El-Zohry, A., 26 Aug 2025, (E-pub ahead of print) In: Angewandte Chemie – International Edition. 64, 42, 8 p., e202513444.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

How a toxic pollutant avoids photodegradation – relaxation pathways of UV-excited 2,4-dinitrophenol in aqueous solution

Greene, H. J. M., Ghosh, D., Sazanovich, I. V., Phelps, R. A., Mackintosh, B., Curchod, B. F. E. & Orr-Ewing, A. J., 12 Aug 2025, In: Proceedings of the National Academy of Sciences of the United States of America. 122, 32, 9 p., e2504123122.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Solvent-Dependent Ultrafast Photochemical Dynamics of N-Methyl Oxindole Overcrowded Alkene Molecular Motors

Harris, C., Collins, B. & Orr-Ewing, A. J., 26 Jun 2025, In: Journal of Physical Chemistry A. 129, 25, p. 5530 – 5544 15 p.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Imaging the Photochemistry of Cyclobutanone using Ultrafast Electron Diffraction: Experimental Results

Green, A. E., Liu, Y., Allum, F., Graßl, M., Lenzen, P., Ashfold, M. N. R., Bhattacharyya, S., Cheng, X., Centurion, M., Crane, S. W., Forbes, R. G., Goff, N. A., Huang, L., Kaufman, B., Kling, M. F., Kramer, P. L., Lam, H. V. S., Larsen, K. A., Lemons, R. & Lin, M.-F. & 10 others, Orr-Ewing, A. J., Rolles, D., Rudenko, A., Saha, S. K., Searles, J., Shen, X., Weathersby, S., Weber, P. M., Zhao, H. & Wolf, T. J. A., 7 May 2025, In: Journal of Chemical Physics. 162, 18, 13 p., 184303.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Ghosh, D., Spinlove, K. E., Greene, H. J. M., Lau, N., Gomez, S., Kao, M.-H., Whitaker, W. A., Clark, I. P., Malakar, P., Worth, G., Oliver, T. A. A., Fielding, H. & Orr-Ewing, A. J., 25 Oct 2024, In: Journal of the American Chemical Society. 146, 44, p. 30443-30454 12 p.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

Publications

Perspective on a challenge: Predicting the photochemistry of cyclobutanone

Record carrier diffusion lengths in large, dense non-fullerene electron acceptor crystals grown from polar aromatic solvents

Temperature-Dependent Kinetics of the Methyl Vinyl Ketone Oxide Criegee Intermediate: Self-Reaction and Reaction with Trifluoroacetic Acid

Photobleaching of Imidazole Brown Carbon in Single Levitated Aerosol Particles

Accurate Quantification of Single Aerosol Particle Microphysical Properties using Broadband Light Scattering Spectroscopy

Efficient calculation of broadband light scattering spectra from spherical, homogeneous particles

Atmospheric oxidation of hydrofluoroolefins and hydrochlorofluoroolefins by ozone produces HFC-23, PFC-14 and CFC-13

Global modeling of trifluoroacetic acid surface concentration and deposition from the gas-phase oxidation of a wide range of precursor hydrofluoroolefins

Oxidative benzylic C(sp³)–H functionalisation of electron-poor substrates with photoexcited DDQ

Investigating the ultraviolet photodissociation of bromocyclopropane with ultrafast electron diffraction

Time-resolved momentum imaging of UV photodynamics in structural isomers of iodopropane probed by site-selective XUV ionization

Ultrafast Excited-State Dynamics of the Organic Photoredox Catalyst DDQ

Dynamic equilibrium between the fluorescent state of tryptophan and its cation-electron ion pair governs triplet state population

The Crucial Role of Solvent and Bound Oxygen on the Interplay of Cerium (III) and Cerium (IV) Chloride in a Photocatalytic Cycle for Organic Transformations

How a toxic pollutant avoids photodegradation – relaxation pathways of UV-excited 2,4-dinitrophenol in aqueous solution

Solvent-Dependent Ultrafast Photochemical Dynamics of N-Methyl Oxindole Overcrowded Alkene Molecular Motors

Imaging the Photochemistry of Cyclobutanone using Ultrafast Electron Diffraction: Experimental Results

Exchange, promiscuity, and orthogonality in de novo designed coiled-coil peptide assemblies

Wavelength- and pH-Dependent Optical Properties of Aqueous Aerosol Particles Containing 4-Nitrocatechol

Efficient Ground-State Recovery of UV-Photoexcited p-Nitrophenol in Aqueous Solution by Direct and Multistep Pathways.