Real-Time Probing of an Atmospheric Photochemical Reaction by Ultrashort Extreme Ultraviolet Pulses: Nitrous Acid Release from o-Nitrophenol
| Autor: | Hironori Igarashi, Taro Sekikawa, Oliver Schalk, Yuki Nitta, Takuro Tsutsumi, Kenichiro Saita, Satoi Wada, Tetsuya Taketsugu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Nitrous acid
Materials science Photodissociation Photochemistry Dissociation (chemistry) chemistry.chemical_compound Intersystem crossing chemistry Ab initio quantum chemistry methods Intramolecular force Extreme ultraviolet Physics::Atomic and Molecular Clusters General Materials Science Physics::Chemical Physics Physical and Theoretical Chemistry Excitation |
| Zdroj: | Journal of physical chemistry letters. 12(1):674-679 |
| ISSN: | 1948-7185 |
| Popis: | Photolysis of o-nitrophenol, contained in brown carbon, is considered to be a major process for the generation of nitrous acid (HONO) in the atmosphere. In this Letter, we used time-resolved photoelectron spectroscopy with 29.5 eV probe pulses and ab initio calculations to disentangle all reaction steps from the excitation to the dissociation of HONO. After excitation, intersystem crossing to the triplet manifold follows ultrafast excited-state intramolecular hydrogen transfer, where the molecules deplanarizes and finally splits off HONO after 0.5-1 ps. |
| Databáze: | OpenAIRE |
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