Hostname: page-component-76fb5796d-r6qrq Total loading time: 0 Render date: 2024-04-26T07:50:31.222Z Has data issue: false hasContentIssue false
  • English
  • Français

Laboratory Spectroscopy of Protonated PAH Molecules Relevant For Interstellar Chemistry

Published online by Cambridge University Press:  30 March 2011

C. Joblin ,
A.G.G.M. Tielens  and
O. Dopfer
O. Dopfer*
Affiliation:
Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany;. e-mail: dopfer@physik.tu-berlin.de

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

In this contribution, we summarize the recent progress made in recording laboratory infrared (IR) spectra of protonated polycyclic aromatic hydrocarbon molecules (H+PAH) in the gas phase. The IR spectra of a large variety of H+PAH species ranging from benzene to coronene have been obtained by various variants of photodissociation spectroscopy. The employed techniques include single-photon IR photodissociation (IRPD) of tagged H+PAH ions and IR multiple-photon dissociation (IRMPD) of bare H+PAH ions. The comparison of the laboratory IR spectra with astronomical spectra supports the hypothesis that H+PAH ions are possible carriers of the unidentified IR emission (UIR) bands. Moreover, the spectra provide detailed information about the geometric and electronic structure as well as the chemical reactivity and stability of these fundamental hydrocarbon ions.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 46: PAHs and the Universe: A Symposium to Celebrate the 25th Anniversary of the PAH Hypothesis , 2011 , pp. 103 - 108
Copyright
© EAS, EDP Sciences 2011

References

Allamandola, L.J., Tielens, A.G.G.M., & Barker, J.R., 1985, ApJ, 290, L25 CrossRef
Alata, I., Omidyan, R., Broquier, M., et al., 2010, Phys. Chem. Chem. Phys., 12, 14456 CrossRef
Dopfer, O., Solca, N., Lemaire, J., et al., 2005, J. Phys. Chem. A, 109, 7881 CrossRef
Dopfer, O., 2006, J. Phys. Org. Chem., 19, 540 CrossRef
Dopfer, O., 2008, report for project FELIX-030
Douberly, G.E., Ricks, A.M., Schleyer, P.V.R., & Duncan, M.A., 2008, J. Phys. Chem. A, 112, 4869 CrossRef
Hudgins, D.M., Bauschlicher, C.W., & Allamandola, L.J., 2001, Spectrochim. Acta Part A, 57, 907 CrossRef
Jones, W., Boissel, P., Chiavarino, B., et al., 2003, Angew. Chem. Int. Ed., 42, 2057 CrossRef
Knorke, H., Langer, J., Oomens, J., & Dopfer, O., 2009, ApJ, 706, L66 CrossRef
Léger, A., & Puget, J.L., A&A, 137, L5
Lorenz, U.J., Solca, N., Lemaire, J., Maitre, P., & Dopfer, O., 2007, Angew. Chem. Int. Ed., 46, 6714 CrossRef
Pathak, A., & Sarre, P.J., 2008, MNRAS, 391, L10
Ricks, A.M., Douberly, G.E., & Duncan, M.A., 2009, ApJ, 702, 301 CrossRef
Snow, T.L., Page, L.V., Keheyan, Y., & Bierbaum, V.M., 1998, Nature, 391, 259 CrossRef
Solca, N., & Dopfer, O., 2001, Chem. Phys. Lett., 342, 191 CrossRef
Solca, N., & Dopfer, O., 2002, Angew. Chem. Int. Ed., 41, 3628 3.0.CO;2-1>CrossRef
Solca, N. & Dopfer, O., 2003, J. Am. Chem. Soc., 125, 1421 CrossRef
Solca, N., & Dopfer, O., 2003, Chem. Eur. J., 9, 3154 CrossRef
Tielens, A.G.G.M., 2008, ARA&A, 46, 337
Oomens, J., Tielens, A.G.G.M., Sartakov, B.G., von Helden, G., & Meijer, G., 2003, ApJ, 591, 968 CrossRef
Zhao, D., Langer, J., Oomens, J., & Dopfer, O., 2009, J. Chem. Phys., 131, 184307 CrossRef
Zhao, D., 2010, Diploma Thesis, TU Berlin, Germany