Cavity ring-down spectroscopy of jet-cooled 1-pyrenecarboxyaldehyde (C17H10O) and 1-methylpyrene (C17H12) cations

Details Cavity ring-down spectroscopy of jet-cooled 1-pyrenecarboxyaldehyde (C17H10O) and 1-methylpyrene (C17H12) cations Cavity ring-down spectroscopy of jet-cooled 1-pyrenecarboxyaldehyde (C17H10O) and 1-methylpyrene (C17H12) cations

Mar 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006cpl...422..518t&link_type=abstract

Chemical Physics Letters, Vol. 422, p. 518

Physics

Chemical Physics

6

Diffuse Interstellar Bands, Polycylic Aromatic Hydrocarbons

Scientific paper

To study the correlation between pyrene-like species and the diffuse interstellar bands (DIBs), we have investigated the electronic transitions of 1-pyrenecarboxaldehyde+ and 1-methylpyrene+, which were prepared with a pulsed discharge slit nozzle and detected by cavity ring-down spectroscopy. Several vibronic bands were observed near the lambda4428 DIB is detected. Time-dependent density functional theory calculations were performed to aid the assignment of these bands. It is found that none of the observed bands correlate with the lambda4428 DIB. The effect of side groups on the vibronic spectrum of pyrene+ is discussed.

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