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  1. Article ; Online: Photoelectron spectroscopy of the deprotonated tryptophan anion: the contribution of deprotomers to its photodetachment channels.

    Gibbard, Jemma A / Kellow, Catherine S / Verlet, Jan R R

    Physical chemistry chemical physics : PCCP

    2024  Volume 26, Issue 15, Page(s) 12053–12059

    Abstract: Photoelectron spectroscopy and electronic structure calculations are used to investigate the electronic structure of the deprotonated anionic form of the aromatic amino acid tryptophan, and its chromophore, indole. The photoelectron spectra of tryptophan, ...

    Abstract Photoelectron spectroscopy and electronic structure calculations are used to investigate the electronic structure of the deprotonated anionic form of the aromatic amino acid tryptophan, and its chromophore, indole. The photoelectron spectra of tryptophan, recorded at different wavelengths across the UV, consist of two direct detachment channels and thermionic emission, whereas the
    Language English
    Publishing date 2024-04-17
    Publishing country England
    Document type Journal Article
    ZDB-ID 1476244-4
    ISSN 1463-9084 ; 1463-9076
    ISSN (online) 1463-9084
    ISSN 1463-9076
    DOI 10.1039/d4cp00309h
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Dynamics of Anions: From Bound to Unbound States and Everything In Between.

    Clarke, Connor J / Verlet, Jan R R

    Annual review of physical chemistry

    2024  

    Abstract: Gas-phase anions present an ideal playground for the exploration of excited-state dynamics. They offer control in terms of the mass, extent of solvation, internal temperature, and conformation. The application of a range of ion sources has opened the ... ...

    Abstract Gas-phase anions present an ideal playground for the exploration of excited-state dynamics. They offer control in terms of the mass, extent of solvation, internal temperature, and conformation. The application of a range of ion sources has opened the field to a vast array of anionic systems whose dynamics are important in areas ranging from biology to star formation. Here, we review recent experimental developments in the field of anion photodynamics, demonstrating the detailed insight into photodynamical and electron-capture processes that can be uncovered. We consider the electronic and nuclear ultrafast dynamics of electronically bound excited states along entire reaction coordinates; electronically unbound states showing that photochemical concepts, such as chromophores and Kasha's rule, are transferable to electron-driven chemistry; and nonvalence states that straddle the interface between bound and unbound states. Finally, we consider likely developments that are sure to keep the field of anion dynamics buoyant and impactful. Expected final online publication date for the
    Language English
    Publishing date 2024-01-26
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 1470474-2
    ISSN 1545-1593 ; 0066-426X
    ISSN (online) 1545-1593
    ISSN 0066-426X
    DOI 10.1146/annurev-physchem-090722-125031
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Note: Photoelectron imaging of MnO3- to probe its nuclear and electronic structure.

    Gibbard, Jemma A / Reppel, Jonathan / Verlet, Jan R R

    The Journal of chemical physics

    2023  Volume 159, Issue 14

    Language English
    Publishing date 2023-10-10
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3113-6
    ISSN 1089-7690 ; 0021-9606
    ISSN (online) 1089-7690
    ISSN 0021-9606
    DOI 10.1063/5.0171346
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Effect of Microhydration on the Temporary Anion States of Pyrene.

    Lietard, Aude / Verlet, Jan R R

    The journal of physical chemistry letters

    2022  Volume 13, Issue 16, Page(s) 3529–3533

    Abstract: 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 ... ...

    Abstract 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 perspective, the resonances remain the same, but from the neutral's perspective of the electron-molecule reaction, the resonances decrease in energy by the binding energy of the water molecules. The autodetachment of the resonances shows that hydration has very little effect, showing that even the dynamics of most of the resonances are not impacted by hydration. Two specific resonances do show changes that are explained by the closing of specific autodetachment channels. The lowest-energy resonance leads to efficient electron capture as observed through thermionic emission and evaporation of water molecules (dissociative electron attachment). The implications of low-energy electron capture in dense molecular interstellar clouds are discussed.
    MeSH term(s) Anions/chemistry ; Electrons ; Photoelectron Spectroscopy ; Pyrenes ; Water/chemistry
    Chemical Substances Anions ; Pyrenes ; Water (059QF0KO0R)
    Language English
    Publishing date 2022-04-14
    Publishing country United States
    Document type Journal Article
    ISSN 1948-7185
    ISSN (online) 1948-7185
    DOI 10.1021/acs.jpclett.2c00523
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Photodissociation of permanganate (MnO

    Gibbard, Jemma A / Reppel, Jonathan / Verlet, Jan R R

    Physical chemistry chemical physics : PCCP

    2023  Volume 25, Issue 48, Page(s) 32939–32947

    Abstract: Photoelectron imaging, electron action spectroscopy and electronic structure calculations are used to probe the structure and dynamics of ... ...

    Abstract Photoelectron imaging, electron action spectroscopy and electronic structure calculations are used to probe the structure and dynamics of MnO
    Language English
    Publishing date 2023-12-13
    Publishing country England
    Document type Journal Article
    ZDB-ID 1476244-4
    ISSN 1463-9084 ; 1463-9076
    ISSN (online) 1463-9084
    ISSN 1463-9076
    DOI 10.1039/d3cp04576e
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Author Correction: Spectroscopy and dynamics of the hydrated electron at the water/air interface.

    Jordan, Caleb J C / Coons, Marc P / Herbert, John M / Verlet, Jan R R

    Nature communications

    2024  Volume 15, Issue 1, Page(s) 520

    Language English
    Publishing date 2024-01-15
    Publishing country England
    Document type Published Erratum
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-024-44816-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Unraveling the decarboxylation dynamics of the fluorescein dianion with fragment action spectroscopy.

    Gibbard, Jemma A / Verlet, Jan R R

    The Journal of chemical physics

    2023  Volume 158, Issue 15

    Abstract: The decarboxylation dynamics of the doubly deprotonated fluorescein dianion, Fl2-, are investigated by recording fragment action spectra for the anion, Fl-, and its decarboxylated analog, Fl-CO2-, using a new reflectron secondary mass spectrometer. The ... ...

    Abstract The decarboxylation dynamics of the doubly deprotonated fluorescein dianion, Fl2-, are investigated by recording fragment action spectra for the anion, Fl-, and its decarboxylated analog, Fl-CO2-, using a new reflectron secondary mass spectrometer. The formation of the anion, Fl-, is directly investigated by photoelectron imaging. The Fl- and Fl-CO2- action spectra indicate that, for λ < 400 nm, one-photon dissociative photodetachment, i.e., simultaneous decarboxylation and electron loss, competes with photodetachment, whereas for λ > 400 nm, decarboxylation only proceeds following electron loss via a sequential two-photon process. The primary decarboxylation pathway is the ready loss of CO2 from the relatively short-lived intermediate excited state, Fl-[D1], which is formed by electron loss from the dianion via resonant tunneling through the repulsive Coloumb barrier associated with a high-lying excited dianion state, Fl2-[S2].
    Language English
    Publishing date 2023-04-24
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3113-6
    ISSN 1089-7690 ; 0021-9606
    ISSN (online) 1089-7690
    ISSN 0021-9606
    DOI 10.1063/5.0144851
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

    Z 4' 49/16: Show issues

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  8. Article ; Online: Spectroscopy and dynamics of the hydrated electron at the water/air interface.

    Jordan, Caleb J C / Coons, Marc P / Herbert, John M / Verlet, Jan R R

    Nature communications

    2024  Volume 15, Issue 1, Page(s) 182

    Abstract: The hydrated electron, ... ...

    Abstract The hydrated electron, e
    Language English
    Publishing date 2024-01-02
    Publishing country England
    Document type Journal Article
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-023-44441-2
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  9. Article ; Online: Photoelectron imaging of PtI

    Gibbard, Jemma A / Verlet, Jan R R

    The Journal of chemical physics

    2022  Volume 156, Issue 13, Page(s) 134303

    Abstract: The photoelectron imaging of ... ...

    Abstract The photoelectron imaging of PtI
    Language English
    Publishing date 2022-04-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3113-6
    ISSN 1089-7690 ; 0021-9606
    ISSN (online) 1089-7690
    ISSN 0021-9606
    DOI 10.1063/5.0085610
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

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  10. Article ; Online: Photoelectron Imaging Study of the Diplatinum Iodide Dianions [Pt

    Gibbard, Jemma A / Verlet, Jan R R

    The journal of physical chemistry. A

    2022  Volume 126, Issue 22, Page(s) 3495–3501

    Abstract: Photoelectron spectroscopy has been used to study the electronic structure, photodetachment, and photodissociation of the stable diplatinum iodide dianions [ ... ...

    Abstract Photoelectron spectroscopy has been used to study the electronic structure, photodetachment, and photodissociation of the stable diplatinum iodide dianions [Pt
    Language English
    Publishing date 2022-05-27
    Publishing country United States
    Document type Journal Article
    ISSN 1520-5215
    ISSN (online) 1520-5215
    DOI 10.1021/acs.jpca.2c02008
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