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Negative-Ion Formation upon Soft X-ray Photoexcitation of 2-Propanol

Kivimäki, Antti LU ; Pelimanni, Eetu ; Chernenko, Kirill LU ; Abid, Abdul Rahman and Stråhlman, Christian LU (2025) In Journal of Physical Chemistry A 129(10). p.2454-2461
Abstract

This study investigates the formation of negative ion fragments from gas-phase 2-propanol molecules after interaction with soft X-rays near the O K-edge. The experiment was performed by detecting negative and positive ions in coincidence with time-of-flight spectrometry. The analysis of two- and three-ion coincidence data revealed that nine different anions were produced: H-, C-, CH-, CH2-, O-, OH-, C2-, C2H-, and C3-. For all anions, the most common three-ion events were those involving two protons. The results highlight the sensitivity of negative-ion/positive-ion coincidence spectroscopy and... (More)

This study investigates the formation of negative ion fragments from gas-phase 2-propanol molecules after interaction with soft X-rays near the O K-edge. The experiment was performed by detecting negative and positive ions in coincidence with time-of-flight spectrometry. The analysis of two- and three-ion coincidence data revealed that nine different anions were produced: H-, C-, CH-, CH2-, O-, OH-, C2-, C2H-, and C3-. For all anions, the most common three-ion events were those involving two protons. The results highlight the sensitivity of negative-ion/positive-ion coincidence spectroscopy and provide new insight into the fragmentation processes of organic molecules under soft X-ray excitation.

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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physical Chemistry A
volume
129
issue
10
pages
8 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:86000436182
  • pmid:40014790
ISSN
1089-5639
DOI
10.1021/acs.jpca.4c08226
language
English
LU publication?
yes
id
10e1f4fc-12e8-4c06-9d27-c8b129e0e42b
date added to LUP
2025-06-17 12:50:33
date last changed
2025-06-18 03:00:03
@article{10e1f4fc-12e8-4c06-9d27-c8b129e0e42b,
  abstract     = {{<p>This study investigates the formation of negative ion fragments from gas-phase 2-propanol molecules after interaction with soft X-rays near the O K-edge. The experiment was performed by detecting negative and positive ions in coincidence with time-of-flight spectrometry. The analysis of two- and three-ion coincidence data revealed that nine different anions were produced: H<sup>-</sup>, C<sup>-</sup>, CH<sup>-</sup>, CH<sub>2</sub><sup>-</sup>, O<sup>-</sup>, OH<sup>-</sup>, C<sub>2</sub><sup>-</sup>, C<sub>2</sub>H<sup>-</sup>, and C<sub>3</sub><sup>-</sup>. For all anions, the most common three-ion events were those involving two protons. The results highlight the sensitivity of negative-ion/positive-ion coincidence spectroscopy and provide new insight into the fragmentation processes of organic molecules under soft X-ray excitation.</p>}},
  author       = {{Kivimäki, Antti and Pelimanni, Eetu and Chernenko, Kirill and Abid, Abdul Rahman and Stråhlman, Christian}},
  issn         = {{1089-5639}},
  language     = {{eng}},
  number       = {{10}},
  pages        = {{2454--2461}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Journal of Physical Chemistry A}},
  title        = {{Negative-Ion Formation upon Soft X-ray Photoexcitation of 2-Propanol}},
  url          = {{http://dx.doi.org/10.1021/acs.jpca.4c08226}},
  doi          = {{10.1021/acs.jpca.4c08226}},
  volume       = {{129}},
  year         = {{2025}},
}