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Solvent-Induced Photostability of Acetylene Molecules in Clusters Probed by Multiphoton Dissociation
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SYSNO ASEP 0333706 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Solvent-Induced Photostability of Acetylene Molecules in Clusters Probed by Multiphoton Dissociation Author(s) Fárník, Michal (UFCH-W) RID, ORCID
Poterya, Viktoriya (UFCH-W) RID, ORCID
Votava, Ondřej (UFCH-W) RID, ORCID
Ončák, Milan (UFCH-W) ORCID, RID
Slavíček, P. (CZ)
Dauster, I. (DE)
Buck, U. (DE)Source Title Journal of Physical Chemistry A. - : American Chemical Society - ISSN 1089-5639
Roč. 113, č. 26 (2009), s. 7322-7330Number of pages 9 s. Language eng - English Country US - United States Keywords surface ; C2H2 ; photostability Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects KAN400400651 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) LC512 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000267384500018 DOI 10.1021/jp811073j Annotation We have studied the multiphoton photodissociation of (C2H2)n and (C2H2)n• Arm clusters in molecular beams. The clusters were prepared in supersonic expansions under various conditions, and the corresponding mean cluster sizes were determined, for which the photodissociation at 193 nm was studied. The measured kinetic energy distributions (KEDs) of the H fragment from acetylene in clusters peak around 0.2 eV, in agreement with the KED from an isolated C2H2 molecule. However, the KEDs from the clusters extend to kinetic energies of over 2 eV, significantly higher than the maximum fragment energies from an isolated molecule of about 1 eV. The photofragment acceleration upon solvation is a rather unusual phenomenon. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2010
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