Anion photoelectron imaging spectroscopy of reaction intermediates in the ozonolysis of isoprene
Thompson, Michael C.
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https://hdl.handle.net/2142/104334
Description
Title
Anion photoelectron imaging spectroscopy of reaction intermediates in the ozonolysis of isoprene
Author(s)
Thompson, Michael C.
Contributor(s)
Chick Jarrold, Caroline
Dobulis, Marissa A.
Issue Date
2019-06-21
Keyword(s)
Radicals
Date of Ingest
2019-07-15T22:16:42Z
2020-01-25T19:29:11Z
Abstract
Ozonolysis of volatile organic compounds is one of the principle oxidative reactions in the atmosphere. Such reactions are known to produce hydroxyl radical, as well as secondary organic aerosols.\footnote{Guenther, A. \textit{et al.} \textit{J. Geophys. Res.} \textbf{1995}, \textit{100}, 8873–8892.} Isoprene is the most abundant non-methane hydrocarbon in the troposphere, and is thought to be a nighttime source of hydroxyl radical in densely vegetated areas.\footnote{Gutbrod, R. \textit{et al.} \textit{J. Am. Chem. Soc.} \textbf{1997}, \textit{119}, 7330-7342.} We “tag” unstable radical species with an electron in order to study their molecular identities and low-lying electronic structures via mass spectrometry and anion photoelectron spectroscopy. We will present photoelectron spectra of products of isoprene ozonolysis at 2.33 and 3.49 eV, along with quantum chemical calculations of several reaction intermediates that are formed via ozonolysis of isoprene.
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1425061.pptx
3883.pdf
