ORCID Profile
0000-0002-3412-2511
Current Organisation
The University of Edinburgh
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Publisher: Informa UK Limited
Date: 08-08-2016
Publisher: Springer Science and Business Media LLC
Date: 20-12-2019
DOI: 10.1038/S41467-019-13819-6
Abstract: Non-valence states in neutral molecules (Rydberg states) have well-established roles and importance in photochemistry, however, considerably less is known about the role of non-valence states in photo-induced processes in anions. Here, femtosecond time-resolved photoelectron imaging is used to show that photoexcitation of the S 1 (ππ*) state of the methyl ester of deprotonated para -coumaric acid – a model chromophore for photoactive yellow protein (PYP) – leads to a bifurcation of the excited state wavepacket. One part remains on the S 1 (ππ*) state forming a twisted intermediate, whilst a second part leads to the formation of a non-valence (dipole-bound) state. Both populations eventually decay independently by vibrational autodetachment. Valence-to-non-valence internal conversion has hitherto not been observed in the intramolecular photophysics of an isolated anion, raising questions into how common such processes might be, given that many anionic chromophores have bright valence states near the detachment threshold.
Publisher: American Chemical Society (ACS)
Date: 04-2020
Publisher: American Chemical Society (ACS)
Date: 29-01-2019
Abstract: Frequency-resolved (2D) photoelectron (PE) spectra of the anionic clusters (C
Publisher: American Chemical Society (ACS)
Date: 06-12-2021
DOI: 10.1021/ACS.JPCLETT.1C03532
Abstract: Internal conversion between valence-localized and dipole-bound states is thought to be a ubiquitous process in polar molecular anions, yet there is limited direct evidence. Here, photodetachment action spectroscopy and time-resolved photoelectron imaging with a heteropolycyclic aromatic hydrocarbon (hetero-PAH) anion, deprotonated 1-pyrenol, is used to demonstrate a subpicosecond (τ
Publisher: American Chemical Society (ACS)
Date: 27-02-2020
Publisher: AIP Publishing
Date: 22-06-2023
DOI: 10.1063/5.0153058
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9CP01624D
Abstract: The photoinduced excited state dynamics of gas-phase trans-retinoate (deprotonated trans-retinoic acid, trans-RA
Publisher: American Chemical Society (ACS)
Date: 14-07-2016
Abstract: The biological antioxidant activity of vitamin E has been related to the stability of the tocopheroxyl radical. Using anion photoelectron imaging and electronic structure calculations, the four tocopheroxyl components of vitamin E have been studied in the gas phase and have yielded the adiabatic electron affinity of the α-, β/γ-, and δ-tocopheroxyl radicals. Using these values, the bond dissociation enthalpy of the O-H bond of tocopherol has been estimated and is consistent with previous studies and with the trends in biological activity. Differences in the photoelectron angular distributions have been interpreted to result from changes in the symmetry of the molecular orbitals from which the electron was detached.
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3CP03250G
Abstract: The excited state dynamics of four derivatives of the green fluorescent protein chromophore are investigated in the gas phase using time-resolved photoelectron spectroscopy and in water femtosecond fluorescence upconversion.
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1CP00261A
Abstract: The first above-threshold resonance of 2-naphthoxide decays through vibrational mode specific autodetachment with a lifetime of 130 ± 10 fs. This state is not a doorway to stable interstellar anion formation.
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Cate Anstöter.