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Time-resolved photoelectron spectroscopy of nitrobenzene and its aldehydes
Stockholm University, Faculty of Science, Department of Physics. National Research Council of Canada.
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Number of Authors: 72018 (English)In: Chemical Physics Letters, ISSN 0009-2614, E-ISSN 1873-4448, Vol. 691, p. 379-387Article in journal (Refereed) Published
Abstract [en]

We report the first femtosecond time-resolved photoelectron spectroscopy study of 2-, 3-and 4-nitrobenzaldehyde (NBA) and nitrobenzene (NBE) in the gas phase upon excitation at 200 nm. In 3- and 4-NBA, the dynamics follow fast intersystem crossing within 1-2 picoseconds. In 2-NBA and NBE, the dynamics are faster (similar to 0.5 ps). 2-NBA undergoes hydrogen transfer similar to solution phase dynamics. NBE either releases NO2 in the excited state or converts internally back to the ground state. We discuss why these channels are suppressed in the other nitrobenzaldehydes.

Place, publisher, year, edition, pages
2018. Vol. 691, p. 379-387
Keywords [en]
NO2 release, Intersystem crossing, Internal conversion, Excited state hydrogen transfer
National Category
Chemical Sciences Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-152491DOI: 10.1016/j.cplett.2017.11.011ISI: 000418590200064OAI: oai:DiVA.org:su-152491DiVA, id: diva2:1181299
Available from: 2018-02-08 Created: 2018-02-08 Last updated: 2018-02-08Bibliographically approved

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