Formation of the acenaphthylene cation as a common C 2 H 2-loss fragment in dissociative ionization of the PAH isomers anthracene and phenanthrene

S Banhatti, DB Rap, A Simon, H Leboucher… - Physical Chemistry …, 2022 - pubs.rsc.org
Polycyclic aromatic hydrocarbons (PAHs) are thought to be a major constituent of
astrophysical environments, being the carriers of the ubiquitous aromatic infrared bands …

The FELion cryogenic ion trap beam line at the FELIX free-electron laser laboratory: infrared signatures of primary alcohol cations

P Jusko, S Brünken, O Asvany, S Thorwirth… - Faraday …, 2019 - pubs.rsc.org
The combination of a 4 K 22-pole ion trap instrument, FELion, with the widely tunable free
electron lasers at the FELIX Laboratory is described in detail. It allows for wide-range …

Structural investigation of doubly-dehydrogenated pyrene cations

S Panchagnula, J Bouwman, DB Rap… - Physical Chemistry …, 2020 - pubs.rsc.org
The vibrationally resolved spectra of the pyrene cation and doubly-dehydrogenated pyrene
cation (C16H10˙+; Py+ and C16H8˙+; ddPy+) are presented. Infrared predissociation …

Spectroscopic detection of cyano-cyclopentadiene ions as dissociation products upon ionization of aniline

DB Rap, TJHH van Boxtel, B Redlich… - The Journal of Physical …, 2022 - ACS Publications
The H-loss products (C6H6N+) from the dissociative ionization of aniline (C6H7N) have
been studied by infrared predissociation spectroscopy in a cryogenic ion trap instrument at …

Photodissociation of aliphatic PAH derivatives under relevant astrophysical conditions

A Marciniak, C Joblin, G Mulas, VR Mundlapati… - Astronomy & …, 2021 - aanda.org
Context. The interaction of polycyclic aromatic hydrocarbons (PAHs) with vacuum ultraviolet
(VUV) photons triggers the emission of the well-known aromatic infrared bands (AIBs), but …

Direct Evidence of the Benzylium and Tropylium Cations as the Two Long‐Lived Isomers of C7H7+

P Jusko, A Simon, S Banhatti, S Brünken… - …, 2018 - Wiley Online Library
Disentangling the isomeric structure of C7H7+ is a longstanding experimental issue. We
report here the full mid‐infrared vibrational spectrum of C7H7+ tagged with Ne obtained with …

Infrared spectroscopy of the benzylium-like (and tropylium-like) isomers formed in the–H dissociative ionization of methylated PAHs

G Wenzel, A Simon, S Banhatti, P Jusko… - Journal of Molecular …, 2022 - Elsevier
Cationic benzylium and tropylium are known to be two competitive isomers for the–H
fragment of the methylbenzene (toluene) cation. Methylated polycyclic aromatic hydrocarbon …

Dissociation of polycyclic aromatic hydrocarbons at high energy: MD/DFTB simulations versus collision experiments: Fragmentation paths, energy distribution and …

A Simon, JP Champeaux, M Rapacioli… - Theoretical Chemistry …, 2018 - Springer
The whole process following collisions of polycyclic aromatic hydrocarbons (PAHs) with high
energetic protons is modeled and compared to the experimental mass spectrum, allowing to …

Photo-processing of astro-PAHs

C Joblin, G Wenzel, SR Castillo, A Simon… - Journal of Physics …, 2020 - iopscience.iop.org
Polycyclic aromatic hydrocarbons (PAHs) are key species in astrophysical environments in
which vacuum ultraviolet (VUV) photons are present, such as star-forming regions. The …

Infrared action spectroscopy of doubly charged PAHs and their contribution to the aromatic infrared bands

S Banhatti, J Palotás, P Jusko, B Redlich… - Astronomy & …, 2021 - aanda.org
The so-called aromatic infrared bands (AIBs) are attributed to emission of polycyclic
aromatic hydrocarbons (PAHs). The observed variations toward different regions in space …