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Ultra-Fast-VUV Photoemission Study of UV Excited 2-Nitrophenol

Ciavardini, Alessandra (author)
Univ Roma La Sapienza, Dipartimento Chim & Tecnol Farmaco, Ple A Moro 5, I-00185 Rome, Italy;Univ Roma Tor Vergata, Dipartimento Sci & Tecnol Chim, Via Ric Sci, I-00133 Rome, Italy;CERIC ERIC, Basovizza Area Sci Pk, I-34149 Trieste, Italy
Coreno, Marcello (author)
ISM CNR, Basovizza Area Sci Pk, I-34149 Trieste, Italy;Elettra Sincrotrone Trieste, Ss 14,Km 163,5, I-34149 Trieste, Italy
Callegari, Carlo (author)
Elettra Sincrotrone Trieste, Ss 14,Km 163,5, I-34149 Trieste, Italy
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Spezzani, Carlo (author)
Elettra Sincrotrone Trieste, Ss 14,Km 163,5, I-34149 Trieste, Italy
De Ninno, Giovanni (author)
Elettra Sincrotrone Trieste, Ss 14,Km 163,5, I-34149 Trieste, Italy;Univ Nova Gor, Lab Quantum Opt, Vipayska 11c, SI-5270 Ajdovscina, Slovenia
Ressel, Barbara (author)
Elettra Sincrotrone Trieste, Ss 14,Km 163,5, I-34149 Trieste, Italy;Univ Nova Gor, Lab Quantum Opt, Vipayska 11c, SI-5270 Ajdovscina, Slovenia
Grazioli, Cesare (author)
IOM CNR, Lab TASV, Basovizza SS-14,Km 163-5, I-34012 Trieste, Italy
de Simone, Monica (author)
IOM CNR, Lab TASV, Basovizza SS-14,Km 163-5, I-34012 Trieste, Italy
Kivimäki, Antti (author)
IOM CNR, Lab TASV, Basovizza SS-14,Km 163-5, I-34012 Trieste, Italy;Lund Univ, MAX 4 Lab, POB 118, SE-22100 Lund, Sweden
Miotti, Paolo (author)
IFN CNR, Padova Res Unit, Via Trasea 7, I-35131 Padua, Italy
Frassetto, Fabio (author)
IFN CNR, Padova Res Unit, Via Trasea 7, I-35131 Padua, Italy
Poletto, Luca (author)
IFN CNR, Padova Res Unit, Via Trasea 7, I-35131 Padua, Italy
Puglia, Carla (author)
Uppsala universitet,Molekyl- och kondenserade materiens fysik
Fornarini, Simonetta (author)
Univ Roma La Sapienza, Dipartimento Chim & Tecnol Farmaco, Ple A Moro 5, I-00185 Rome, Italy
Pezzella, Marco (author)
Univ Roma La Sapienza, Dipartimento Chim, Ple A Moro 5, I-00185 Rome, Italy
Bodo, Enrico (author)
Univ Roma La Sapienza, Dipartimento Chim, Ple A Moro 5, I-00185 Rome, Italy
Piccirillo, Susanna (author)
Univ Roma Tor Vergata, Dipartimento Sci & Tecnol Chim, Via Ric Sci, I-00133 Rome, Italy
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 (creator_code:org_t)
2019-01-22
2019
English.
In: Journal of Physical Chemistry A. - : AMER CHEMICAL SOC. - 1089-5639 .- 1520-5215. ; 123:7, s. 1295-1302
Related links:
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https://doi.org/10.1...
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  • Journal article (peer-reviewed)
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  • 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.

Subject headings

NATURVETENSKAP  -- Kemi -- Fysikalisk kemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences -- Physical Chemistry (hsv//eng)

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