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

Photoredox-HAT Catalysis for Primary Amine α-C–H Alkylation: Mechanistic Insight with Transient Absorption Spectroscopy

Sneha, M., Thornton, G. L., Lewis-Borrell, L. J., Ryder, A., Espley, S., Clark, I. P., Cresswell, A., Grayson, M. & Orr-Ewing, A. J., 18 May 2023, (Accepted/In press) In: ACS Catalysis.

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

Evaluating the Accuracy of Absorbing Aerosol Optical Properties Measured using Single Particle Cavity Ring-Down Spectroscopy

Knight, J. W., Orr-Ewing, A. J. & Cotterell, M. I., 24 Mar 2023, In: Aerosol Science and Technology. 57, 5, p. 406-424 19 p.

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

Charge-Separated Reactive Intermediates from the UV Photodissociation of Chlorobenzene in Solution

Kao, T. & Orr-Ewing, A. J., 6 Oct 2022, In: Journal of Physical Chemistry A. 126, 39, p. 6934 – 6943 10 p.

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

Disentangling sequential and concerted fragmentations of molecular polycations with covariant native frame analysis

McManus, J. W., Walmsley, T., Nagaya, K., Harries, J. R., Kumagai, Y., Iwayama, H., Ashfold, M. N. R., Britton, M., Bucksbaum, P. H., Downes-Ward, B., Driver, T., Heathcote, D., Hockett, P., Howard, A. J., Kukk, E., Lee, J. W. L., Liu, Y., Milesevic, D., Minns, R. S., Niozu, A., & 13 othersNiskanen, J., Orr-Ewing, A. J., Owada, S., Rolles, D., Robertson, P. A., Rudenko, A., Ueda, K., Unwin, J., Vallance, C., Burt, M., Brouard, M., Forbes, R. & Allum, F., 15 Sep 2022, In: Physical Chemistry Chemical Physics. 24, 37, p. 22699-22709 11 p.

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

Enantioselective one-carbon expansion of aromatic rings by simultaneous formation and chromoselective irradiation of a transient coloured enolate

Saunthwal, R. K., Mortimer, J., Orr-Ewing, A. J. & Clayden, J., 25 Jan 2022, (E-pub ahead of print) In: Chemical Science. 13, 7, p. 2079-2085 7 p.

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

Solvent Effects on Ultrafast Photochemical Pathways

Venkatraman, R. K. & Orr-Ewing, A. J., 29 Nov 2021, In: Accounts of Chemical Research. 54, 23, p. 4383-4394 12 p.

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

Direct Observation of Reactive Intermediates by Time-Resolved Spectroscopy Unravels the Mechanism of a Radical-Induced 1,2-Metalate Rearrangement

Lewis-Borrell, L. J., Sneha, M., Clark, I. P., Fasano, V., Noble, A., Aggarwal, V. K. & Orr-Ewing, A. J., 20 Oct 2021, In: Journal of the American Chemical Society. 143, 41, p. 17191 – 17199 9 p.

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

Transient Absorption Spectroscopy of the Electron Transfer Step in the Photochemically Activated Polymerizations of N-ethylcarbazole and 9-phenylcarbazole

Thornton, G. L., Phelps, R. A. & Orr-Ewing, A. J., 14 Sep 2021, In: Physical Chemistry Chemical Physics. 23, 34, p. 18378 – 18392 15 p.

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

Structure-Dependent Electron Transfer Rates for Dihydrophenazine, Phenoxazine and Phenothiazine Photoredox Catalysts Employed in Atom Transfer Radical Polymerization

Sneha, M., Bhattacherjee, A., Lewis-Borrell, L. J., Clark, I. P. & Orr-Ewing, A. J., 22 Jul 2021, In: Journal of Physical Chemistry B. 125, 28, p. 7840 – 7854 15 p.

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

Tuning the Excited-State Dynamics of Acetophenone Using Metal Ions in Solution

Robertson, P. A., Bishop, H. M. & Orr-Ewing, A. J., 17 Jun 2021, In: Journal of Physical Chemistry Letters. 12, 23, p. 5473 – 5478 6 p.

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

Investigation of the Production of Trifluoroacetic Acid from Two Halocarbons, HFC-134a and HFO-1234yf and Its Fates Using a Global Three-Dimensional Chemical Transport Model

Holland, R. E. T., Khan, M. A. H., Driscoll, I., Chhantyal-Pun, R., Derwent, R. G., Taatjes, C. A., Orr-Ewing, A. J., Percival, C. J. & Shallcross, D. E., 15 Apr 2021, In: ACS Earth and Space Chemistry. 5, 4, p. 849 – 857 9 p.

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

Singlet and Triplet Contributions to the Excited-State Activities of Dihydrophenazine, Phenoxazine, and Phenothiazine Organocatalysts Used in Atom Transfer Radical Polymerization

Bhattacherjee, A., Sneha, M., Lewis-Borrell, L. J., Amoruso, G., Oliver, T. A. A., Tyler, J. L., Clark, I. P. & Orr-Ewing, A. J., 10 Mar 2021, In: Journal of the American Chemical Society. 143, 9, p. 3613 – 3627 15 p.

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

Influence of the Solvent Environment on the Ultrafast Relaxation Pathways of a Sunscreen Molecule Diethylamino Hydroxybenzoyl Hexyl Benzoate

Kao, M-H., Venkatraman, R. K., Sneha, M., Wilton, M. & Orr-Ewing, A. J., 21 Jan 2021, In: Journal of Physical Chemistry A. 125, 2, p. 636 – 645 10 p., 2.

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

Publications

Photoredox-HAT Catalysis for Primary Amine α-C–H Alkylation: Mechanistic Insight with Transient Absorption Spectroscopy

Evaluating the Accuracy of Absorbing Aerosol Optical Properties Measured using Single Particle Cavity Ring-Down Spectroscopy

Charge-Separated Reactive Intermediates from the UV Photodissociation of Chlorobenzene in Solution

Disentangling sequential and concerted fragmentations of molecular polycations with covariant native frame analysis

Direct Observation of the Dynamics of Ylide Solvation by Hydrogen-bond Donors using Time-Resolved Infrared Spectroscopy

Accurate Measurement of the Optical Properties of Single Aerosol Particles Using Cavity Ring-Down Spectroscopy

Direct Spectroscopic Quantification of the Absorption and Scattering Properties for Single Aerosol Particles

Enantioselective one-carbon expansion of aromatic rings by simultaneous formation and chromoselective irradiation of a transient coloured enolate

Solvent Effects on Ultrafast Photochemical Pathways

Direct Observation of Reactive Intermediates by Time-Resolved Spectroscopy Unravels the Mechanism of a Radical-Induced 1,2-Metalate Rearrangement

Transient Absorption Spectroscopy of the Electron Transfer Step in the Photochemically Activated Polymerizations of N-ethylcarbazole and 9-phenylcarbazole

Structure-Dependent Electron Transfer Rates for Dihydrophenazine, Phenoxazine and Phenothiazine Photoredox Catalysts Employed in Atom Transfer Radical Polymerization

Tuning the Excited-State Dynamics of Acetophenone Using Metal Ions in Solution

Investigation of the Production of Trifluoroacetic Acid from Two Halocarbons, HFC-134a and HFO-1234yf and Its Fates Using a Global Three-Dimensional Chemical Transport Model

Singlet and Triplet Contributions to the Excited-State Activities of Dihydrophenazine, Phenoxazine, and Phenothiazine Organocatalysts Used in Atom Transfer Radical Polymerization

Influence of the Solvent Environment on the Ultrafast Relaxation Pathways of a Sunscreen Molecule Diethylamino Hydroxybenzoyl Hexyl Benzoate

Optical Interrogation of Single Levitated Droplets in a Linear Quadrupole Trap by Cavity Ring-Down Spectroscopy

Impact of Criegee Intermediate Reactions with Peroxy Radicals on Tropospheric Organic Aerosol

Solvent-dependent photochemical dynamics of a phenoxazine-based photoredox catalyst

Criegee Intermediates: Production, Detection and Reactivity