The Ground And Excited States Of Aromatic Oxide Radicals Via Anion Photoelectron Spectroscopy

Kregel, Steven J.

Permalink

https://hdl.handle.net/2142/111130 Copy

Description

Title

The Ground And Excited States Of Aromatic Oxide Radicals Via Anion Photoelectron Spectroscopy

Author(s)

Kregel, Steven J.

Contributor(s)

Garand, Etienne

Issue Date

2021-06-23

Keyword(s)

Radicals

Date of Ingest

• 2021-09-24T21:09:04Z
• 2022-01-21T16:10:00Z

Abstract

Aromatic oxide free radicals play an important role in atmospheric and combustion chemistry, where they are involved in the formation of secondary organic aerosols and soot. The oxygen atom lone pairs can readily mix with the aromatic system giving rise to extensive electronic delocalization and influencing molecular reactivity. The oxygen atom also imparts a significant dipole moment to the radical system, which supports low-lying resonance and dipole bound states. We probed three cryogenically cooled aromatic oxide radicals (phenoxy, 1-naphthoxy, 2-naphthoxy) via Slow Electron Velocity Map Imaging (SEVI) to unravel their electronic and vibrational structure. We determined electron affinities and excited state energies for the three systems, and observed numerous active vibrational modes. Resonant photoexcitation to the dipole bound state was found to drastically alter the observed vibrational structure, and care was taken to avoid these resonances during direct photodetachment studies.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

Text

Genre of Resource

Conference Paper / Presentation

Language

eng

Permalink

http://hdl.handle.net/2142/111130

DOI

10.15278/isms.2021.WM09

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