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Title:Ultra-Fast-VUV Photoemission Study of UV Excited 2-Nitrophenol
Authors:Ciavardini, A. (Author)
Coreno, Marcello (Author)
Callegari, Carlo (Author)
Spezzani, C. (Author)
De Ninno, Giovanni (Author)
Ressel, Barbara (Author)
Grazioli, Cesare (Author)
de Simone, Monica (Author)
Kivimak̈i, Antti (Author)
Miotti, Paolo (Author)
Frassetto, Fabio (Author)
Poletto, Luca (Author)
Rudolf, Petra (Author)
Fornarini, Simona (Author)
Pezzella, Marco (Author)
Bodo, Enrico (Author)
Piccirillo, Susanna (Author)
et al.
Files:This document has no files. This document may have a phisical copy in the library of the organization, check the status via COBISS. Link is opened in a new window
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:The initial deactivation pathways of gaseous 2-nitrophenol excited at 268 nm were investigated by time-resolved photoelectron spectroscopy (TRPES) with femtosecond-VUV light, produced by a monochromatized high harmonic generation source. TRPES allowed us to obtain new, valuable experimental information about the ultrafast excited-state dynamics of 2-nitrophenol in the gas phase. In accord with recent ab initio on-the-fly nonadiabatic molecular dynamic simulations, our results validate the occurrence of an ultrafast intersystem crossing leading to an intermediate state that decays on a subpicosecond time scale with a branched mechanisms. Two decay pathways are experimentally observed. One probably involves proton transfer, leading to the most stable triplet aci-form of 2-nitrophenol; the second pathway may involve OH rotation. We propose that following intersystem crossing, an ultrafast fragmentation channel leading to OH or HONO loss could also be operative.
Keywords:Ultrafast photoemission, nitrophenol
Year of publishing:2019
Number of pages:8
Numbering:DOI: 10.1021/acs.jpca.8b10136
COBISS_ID:5327611 Link is opened in a new window
DOI:10.1021/acs.jpca.8b10136 Link is opened in a new window
License:CC BY-NC-ND 4.0
This work is available under this license: Creative Commons Attribution Non-Commercial No Derivatives 4.0 International
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Record is a part of a journal

Title:The Journal of Physical Chemistry A
Shortened title:J. Phys. Chem. A
Year of publishing:2019