Far-Infrared Emission Spectra of Selected Gas-Phase PAHs:
Spectroscopic Fingerprints
K. Zhang,
B. Guo,
P. Colarusso,
P. F. Bernath
The emission spectra of the gaseous polycyclic aromatic
hydrocarbons (PAHs) naphthalene, chrysene, and pyrene were recorded in
the far-infrared (far-IR) region. The vibrational bands that lie in the
far IR are unique for each PAH molecule and allow discrimination among
the three PAH molecules. The far-IR PAH spectra, therefore, may prove
useful in the assignment of unidentified spectral features from
astronomical objects.
K. Zhang, B. Guo, P. Colarusso, Centre for Molecular Beams and
Laser Chemistry, Department of Chemistry, University of Waterloo,
Waterloo, Ontario, Canada N2L 3G1.
P. F. Bernath, Centre for Molecular Beams and Laser Chemistry,
Department of Chemistry, University of Waterloo, Waterloo, Ontario,
Canada N2L 3G1 and Department of Chemistry, University of Arizona,
Tucson, AZ 85721, USA.
