Why Do Large Ionized Polycyclic Aromatic Hydrocarbons Not Lose C2H2?

BJ West, L Lesniak, PM Mayer - The Journal of Physical Chemistry …, 2019 - ACS Publications
The reaction mechanisms for the loss of C2H2 from the ions of anthracene, phenanthrene,
tetracene, and pyrene were calculated at the B3-LYP/6-311++ G (2d, p) level of theory and …

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 …

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 …

Competitive dehydrogenation and backbone fragmentation of superhydrogenated PAHs: A laboratory study

MH Stockett, L Avaldi, P Bolognesi, JN Bull… - The Astrophysical …, 2021 - iopscience.iop.org
Superhydrogenated polycyclic aromatic hydrocarbons (PAHs) have been suggested to
catalyze the formation of H 2 in certain regions of space, but it remains unclear under which …

Radiative cooling rates of substituted PAH ions

B Zhu, JN Bull, MC Ji, H Zettergren… - The Journal of Chemical …, 2022 - pubs.aip.org
Polycyclic Aromatic Hydrocarbons (PAHs) have long been thought to be ubiquitous in the
Interstellar Medium (ISM), as evidenced by the so-called Aromatic Infrared Bands (AIBs) …

In search of universalities in the dissociative photoionization of PANHs via isomerizations

K Ramanathan, M Selvaraj, M Cautero… - The Journal of …, 2023 - pubs.aip.org
In search of the cause behind the similarities often seen in the fragmentation of PANHs,
vacuum ultraviolet (VUV) photodissociation of two pairs of isomers quinoline–isoquinoline …

Threshold Dissociation of the 1-ethynylpyrene Cation at Internal Energies Relevant to H i Regions

G Rouillé, M Steglich, P Hemberger… - The Astrophysical …, 2019 - iopscience.iop.org
Photoelectron–photoion coincidence spectroscopy has been used to measure the threshold
photoelectron (TPE) spectrum of 1-ethynylpyrene and to obtain the breakdown graph …

What will photo-processing of large, ionized amino-substituted polycyclic aromatic hydrocarbons produce in the interstellar medium?

J Burner, BJ West, PM Mayer - The Journal of Physical Chemistry …, 2019 - ACS Publications
Collision-energy resolved tandem mass spectrometry was used to probe the trends in
unimolecular fragmentation in a series of ionized amino-substituted polycyclic aromatic …

Hydroxy-Substituted Polycyclic Aromatic Hydrocarbon Ions as Sources of CO and HCO in the Interstellar Medium

L Lesniak, BJ West, PM Mayer - The Journal of Physical Chemistry …, 2019 - ACS Publications
Tandem mass spectrometry was used to explore the trends in the unimolecular
fragmentation of the ionized hydroxy-substituted polycyclic aromatic hydrocarbons 1 …

Relaxation de l'énergie de molécules polycycliques aromatiques hydrogénées: une étude en astrophysique de laboratoire

G Wenzel - 2020 - theses.fr
Résumé Composantes de la poussière interstellaire, les molécules polycycliques
aromatiques hydrogénées (PAH) qui peuplent les régions dites de photodissociation (PDR) …