Efficient stabilization of cyanonaphthalene by fast radiative cooling and implications for the resilience of small PAHs in interstellar clouds

Autor: Mark H. Stockett, James N. Bull, Henrik Cederquist, Suvasthika Indrajith, MingChao Ji, José E. Navarro Navarrete, Henning T. Schmidt, Henning Zettergren, Boxing Zhu

Publikováno v: Nature Communications, Vol 14, Iss 1, Pp 1-8 (2023)

Abstract After decades of searching, astronomers have recently identified specific Polycyclic Aromatic Hydrocarbons (PAHs) in space. Remarkably, the observed abundance of cyanonaphthalene (CNN, C10H7CN) in the Taurus Molecular Cloud (TMC-1) is six or

Externí odkaz: https://doaj.org/article/76a69a384a9043afa1fbe1f6842b31f2

Efficient radiative cooling of tetracene cations C18H12+: absolute recurrent fluorescence rates as a function of internal energy

Autor: Jérôme Bernard, MingChao Ji, Suvasthika Indrajith, Mark H. Stockett, José E. Navarro Navarrete, Naoko Kono, Henrik Cederquist, Serge Martin, Henning T. Schmidt, Henning Zettergren

Publikováno v: Physical Chemistry Chemical Physics. 25:10726-10740

High recurrent fluorescence rates of tetracene cations, C18H12, measured with two electrostatic ion rings, DESIREE and Mini-Ring, lead to much more effective radiative cooling than previously investigated PAH cations.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::76fdf33469d3b57aaefae63e890b05f9
https://doi.org/10.1039/d3cp00424d

Electron and ion spectroscopy of the cyclo-alanine–alanine dipeptide

Autor: Jacopo Chiarinelli, Darío Barreiro-Lage, Paola Bolognesi, Robert Richter, Henning Zettergren, Mark H. Stockett, Sergio Díaz-Tendero, Lorenzo Avaldi

Publikováno v: PCCP. Physical chemistry chemical physics
24 (2022): 5855–5867. doi:10.1039/d1cp05811h
info:cnr-pdr/source/autori:Chiarinelli, Jacopo; Barreiro-Lage, Dario; Bolognesi, Paola; Richter, Robert; Zettergren, Henning; Stockett, Mark H.; Diaz-Tendero, Sergio; Avaldi, Lorenzo/titolo:Electron and ion spectroscopy of the cyclo-alanine-alanine dipeptide/doi:10.1039%2Fd1cp05811h/rivista:PCCP. Physical chemistry chemical physics (Print)/anno:2022/pagina_da:5855/pagina_a:5867/intervallo_pagine:5855–5867/volume:24

The VUV photoionisation and photofragmentation of cyclo-alanine-alanine (cAA) has been studied in a joint experimental and theoretical work. The photoelectron spectrum and the photoelectronphotoion coincidence (PEPICO) measurements, which enable cont

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::683d5a44a6e15bd8a7efca5bb812a567
https://doi.org/10.1039/d1cp05811h

Experimental radiative cooling rates of a Polycyclic Aromatic Hydrocarbon cation

Autor: José Eduardo Navarro Navarrete, James N Bull, Henrik Cederquist, Suvasthika Indrajith, Mingchao Ji, Henning Schmidt, Henning Zettergren, Boxing Zhu, Mark H Stockett

Several small Polycyclic Aromatic Hydrocarbons (PAHs) have been identified recently in the Taurus Molecular Cloud (TMC-1) using radio telescope observations. Reproducing the observed abundances of these molecules has been a challenge for astrochemica

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea201adf0b7dff609261f50ee3a8e88f
https://ueaeprints.uea.ac.uk/id/eprint/91066/

Cryogenic Fluorescence Spectroscopy of Ionic Fluorones in Gaseous and Condensed Phases: New Light on Their Intrinsic Photophysics

Autor: Eleanor K. Ashworth, Jeppe Langeland, Mark H. Stockett, Thomas Toft Lindkvist, Christina Kjær, James N. Bull, Steen Brøndsted Nielsen

Publikováno v: Ashworth, E K, Langeland, J, Stockett, M H, Lindkvist, T T, Kjær, C, Bull, J N & Nielsen, S B 2022, ' Cryogenic Fluorescence Spectroscopy of Ionic Fluorones in Gaseous and Condensed Phases : New Light on Their Intrinsic Photophysics ', Journal of Physical Chemistry A, vol. 126, no. 51, pp. 9553-9563 . https://doi.org/10.1021/acs.jpca.2c07231

Fluorescence spectroscopy of gas-phase ions generated through electrospray ionization is an emerging technique able to probe intrinsic molecular photophysics directly without perturbations from solvent interactions. While there is ample scope for the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc257f7a6884eb4f55479eb5f3e0217f
https://pubmed.ncbi.nlm.nih.gov/36529970