1. Time-resolved photoelectron spectroscopy of nitrobenzene and its aldehydes
- Author
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Andrey E. Boguslavskiy, Albert Stolow, Oliver Schalk, Thomas J. A. Wolf, David M. P. Holland, Milan Szöri, and David Townsend
- Subjects
intersystem crossing ,010304 chemical physics ,excited state hydrogen transfer ,General Physics and Astronomy ,010402 general chemistry ,Internal conversion (chemistry) ,Photochemistry ,01 natural sciences ,0104 chemical sciences ,Nitrobenzene ,chemistry.chemical_compound ,Intersystem crossing ,chemistry ,X-ray photoelectron spectroscopy ,Picosecond ,Excited state ,0103 physical sciences ,Femtosecond ,Physical and Theoretical Chemistry ,NO2 release ,Ground state ,internal conversion - Abstract
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 ( ∼ 0.5 ps). 2-NBA undergoes hydrogen transfer similar to solution phase dynamics. NBE either releases NO 2 in the excited state or converts internally back to the ground state. We discuss why these channels are suppressed in the other nitrobenzaldehydes.
- Published
- 2018
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