All Outputs (10)

Low-Energy Shape Resonances of a Nucleobase in Water (2022)
Journal Article
Cooper, G. A., Clarke, C. J., & Verlet, J. R. (2022). Low-Energy Shape Resonances of a Nucleobase in Water. Journal of the American Chemical Society, 145(2), 1319-1326. https://doi.org/10.1021/jacs.2c11440

When high-energy radiation passes through aqueous material, low-energy electrons are produced which cause DNA damage. Electronic states of anionic nucleobases have been suggested as an entrance channel to capture the electron. However, identifying th... Read More about Low-Energy Shape Resonances of a Nucleobase in Water.

Allophycocyanin A is a carbon dioxide receptor in the cyanobacterial phycobilisome (2022)
Journal Article
Guillen-Garcia, A., Gibson, S., Jordan, C., Ramaswamy, V., Linthwaite, V., Bromley, E., …Cann, M. (2022). Allophycocyanin A is a carbon dioxide receptor in the cyanobacterial phycobilisome. Nature Communications, 13, Article 5289. https://doi.org/10.1038/s41467-022-32925-6

Light harvesting is fundamental for production of ATP and reducing equivalents for CO2 fixation during photosynthesis. However, electronic energy transfer (EET) through a photosystem can harm the photosynthetic apparatus when not balanced with CO2. H... Read More about Allophycocyanin A is a carbon dioxide receptor in the cyanobacterial phycobilisome.

Kasha’s Rule and Koopmans’ Correlations for Electron Tunnelling through Repulsive Coulomb Barriers in a Polyanion (2022)
Journal Article
Gibbard, J. A., & Verlet, J. R. (2022). Kasha’s Rule and Koopmans’ Correlations for Electron Tunnelling through Repulsive Coulomb Barriers in a Polyanion. Journal of Physical Chemistry Letters, 13(33), 7797-7801. https://doi.org/10.1021/acs.jpclett.2c02145

The long-range electronic structure of polyanions is defined by the repulsive Coulomb barrier (RCB). Excited states can decay by resonant electron tunnelling through RCBs, but such decay has not been observed for electronically excited states other t... Read More about Kasha’s Rule and Koopmans’ Correlations for Electron Tunnelling through Repulsive Coulomb Barriers in a Polyanion.

Resonances in nitrobenzene probed by the electron attachment to neutral and by the photodetachment from anion (2022)
Journal Article
Ranković, M., Nag, P., Anstöter, C. S., Mensa-Bonsu, G., Kumar T.P., R., Verlet, J. R., & Fedor, J. (2022). Resonances in nitrobenzene probed by the electron attachment to neutral and by the photodetachment from anion. The Journal of Chemical Physics, 157(6), Article 064302. https://doi.org/10.1063/5.0101358

We probe resonances (transient anions) in nitrobenzene with the focus on the electron emission from these. Experimentally, we populate resonances in two ways: either by the impact of free electrons on the neutral molecule or by the photoexcitation of... Read More about Resonances in nitrobenzene probed by the electron attachment to neutral and by the photodetachment from anion.

Photooxidation of the Phenolate Anion is Accelerated at the Water/Air Interface (2022)
Journal Article
Jordan, C. J., Lowe, E. A., & Verlet, J. R. (2022). Photooxidation of the Phenolate Anion is Accelerated at the Water/Air Interface. Journal of the American Chemical Society, 144(31), 14012-14015. https://doi.org/10.1021/jacs.2c04935

Molecular photodynamics can be dramatically affected at the water/air interface. Probing such dynamics is challenging, with product formation often probed indirectly through its interaction with interfacial water molecules using time-resolved and pha... Read More about Photooxidation of the Phenolate Anion is Accelerated at the Water/Air Interface.

Photoelectron Imaging Study of the Diplatinum Iodide Dianions [Pt2I6]2– and [Pt2I8]2– (2022)
Journal Article
Gibbard, J. A., & Verlet, J. R. (2022). Photoelectron Imaging Study of the Diplatinum Iodide Dianions [Pt2I6]2– and [Pt2I8]2–. The Journal of Physical Chemistry A, 126(22), https://doi.org/10.1021/acs.jpca.2c02008

Photoelectron spectroscopy has been used to study the electronic structure, photodetachment, and photodissociation of the stable diplatinum iodide dianions [Pt2I6]2– and [Pt2I8]2–. Photoelectron spectra over a range of photon energies show the charac... Read More about Photoelectron Imaging Study of the Diplatinum Iodide Dianions [Pt2I6]2– and [Pt2I8]2–.

Effect of Microhydration on the Temporary Anion States of Pyrene (2022)
Journal Article
Lietard, A., & Verlet, J. R. (2022). Effect of Microhydration on the Temporary Anion States of Pyrene. Journal of Physical Chemistry Letters, 13(16), 3529-3533. https://doi.org/10.1021/acs.jpclett.2c00523

The influence of incremental hydration (≤4) on the electronic resonances of the pyrene anion is studied using two-dimensional photoelectron spectroscopy. The photoexcitation energies of the resonances do not change; therefore, from the anion’s perspe... Read More about Effect of Microhydration on the Temporary Anion States of Pyrene.

Photoelectron imaging of PtI2− and its PtI− photodissociation product (2022)
Journal Article
Gibbard, J. A., & Verlet, J. R. (2022). Photoelectron imaging of PtI2− and its PtI− photodissociation product. The Journal of Chemical Physics, 156(13), https://doi.org/10.1063/5.0085610

The photoelectron imaging of PtI2− is presented over photon energies ranging from hν = 3.2 to 4.5 eV. The electron affinity of PtI2 is found to be 3.4 ± 0.1 eV, and the photoelectron spectrum contains three distinct peaks corresponding to three low-l... Read More about Photoelectron imaging of PtI2− and its PtI− photodissociation product.

Photochemistry of the pyruvate anion produces CO2, CO, CH3–, CH3, and a low energy electron (2022)
Journal Article
Clarke, C. J., Gibbard, J. A., Hutton, L., Verlet, J. R., & Curchod, B. F. (2022). Photochemistry of the pyruvate anion produces CO2, CO, CH3–, CH3, and a low energy electron. Nature Communications, 13(1), Article 937. https://doi.org/10.1038/s41467-022-28582-4

The photochemistry of pyruvic acid has attracted much scientific interest because it is believed to play critical roles in atmospheric chemistry. However, under most atmospherically relevant conditions, pyruvic acid deprotonates to form its conjugate... Read More about Photochemistry of the pyruvate anion produces CO2, CO, CH3–, CH3, and a low energy electron.

A Hückel Model for the Excited-State Dynamics of a Protein Chromophore Developed Using Photoelectron Imaging (2022)
Journal Article
Anstöter, C. S., & Verlet, J. R. (2022). A Hückel Model for the Excited-State Dynamics of a Protein Chromophore Developed Using Photoelectron Imaging. Accounts of Chemical Research, 55(9), 1205-1213. https://doi.org/10.1021/acs.accounts.1c00780

Chemistry can be described as the movement of nuclei within molecules and the concomitant instantaneous change in electronic structure. This idea underpins the central chemical concepts of potential energy surfaces and reaction coordinates. To experi... Read More about A Hückel Model for the Excited-State Dynamics of a Protein Chromophore Developed Using Photoelectron Imaging.