RT info:eu-repo/semantics/article
T1 Rotational characterization of four-ring polycyclic aromatic hydrocarbons: toward the detection of fluoranthene and cyanofluoranthene in space
A1 Villar Castro, Daniel
A1 Cabezas, Carlos
A1 Steber, Amanda
A1 Morán, José R.
A1 Fuente, Selene de la
A1 Hussain, Farha S.
A1 Pérez Meirás, Dolores
A1 Lesarri Gómez, Alberto Eugenio
A1 Cernicharo, José
A1 Pérez Cuadrado, Cristobal
A1 Peña Calvo, María Isabel
K1 Aromatic compounds
K1 Energy levels
K1 Hydrocarbons
K1 Molecules
K1 Spectroscopy
K1 2303 Química Inorgánica
AB The combined use of laboratory rotational spectroscopy and radio astronomical observations remains the most effective approach for identifying molecules in the interstellar medium (ISM). Following the recent detections of several polycyclic aromatic hydrocarbons (PAHs) and their cyano derivatives in the dense Taurus Molecular Cloud (TMC-1), it is reasonable to extend such searches to other PAHs within the same source. In this work, we report a rotational spectroscopy study of commercially available fluoranthene (FA) and its synthesized cyano derivative, 3-cyanofluoranthene (3-CNFA), using chirped-pulse Fourier-transform microwave spectroscopy. The analysis of the rotational spectra, supported by quantum chemical calculations, yielded molecular parameters for the parent species of both FA and 3-CNFA molecules. The experimental data of 3-CNFA were later used for its astronomical search in TMC-1 with the QUIJOTE line survey but proved unsuccessful. Despite the nondetection of 3-CNFA in this source, the upper limit to its abundance was established. The experimental data will support future astronomical searches in the ISM.
PB American Chemical Society
SN 1948-7185
YR 2026
FD 2026
LK https://uvadoc.uva.es/handle/10324/84229
UL https://uvadoc.uva.es/handle/10324/84229
LA eng
NO The Journal of Physical Chemistry Letters, 2026
NO Producción Científica
DS UVaDOC
RD 21-abr-2026