Hochauflösende Infrarot-Spektroskopie

Spektroskopie nahe am absoluten Nullpunkt

In diesem Experiment lagern wir Moleküle in ultrakalten supraflüssigen Helium-Nanotröpfchen bei 0,37 K ein, um ihre Struktur und Dynamik zu untersuchen. Mikrosolvatation und Mikroaggregation von molekularen Clustern werden mit Hilfe von hochauflösender Infrarotspektroskopie erforscht.

 

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Wichtigste Publikationen

Pfeilicon"Observation of the low-frequency spectrum of water trimer as a sensitive test of the water-trimer potential and the dipole moment surface", M. Havenith, R. Schwan, C. Qu, D. Mani, N. Pal, G. Schwaab, J.M. Bowman, G. Tschumper, Angew. Chem. Int. Ed. 59, 11399 (2020)

"Acid solvation versus dissociation at "stardust conditions": Reaction sequence matters", D.  Mani, R. Pérez de Tudela Ortega, R. Schwan, N. Pal, S. Körning, H. Forbert, B.; Redlich, A.F.G. van der Meer, G. Schwaab, D. Marx, M. Havenith, Science Advances 5, eaav8179 (2019).

"Observation of the low‐frequency spectrum of the water dimer as a sensitive test of the water dimer potential and dipole moment surfaces", R. Schwan, C. Qu, D. Mani, N. Pal, L. van der Meer, B. Redlich, C. Leforestier, J. M. Bowman, G. Schwaab, M. Havenith, Angew. Chem. Int. Ed. 58, 13119 (2019).

"Understanding the microsolvation of radicals: Infrared spectroscopy of benzyl radical water clusters", D. Leicht, M. Kaufmann, R. Schwan, J. Schäfer, G. Schwaab, M. Havenith, J. Chem. Phys145, 204305 (2016).

"Infrared spectroscopy of the v2 band of the water monomer and small water clusters (H2O)n = 2, 3, 4 in helium droplets", R. Schwan, M. Kaufmann, D. Leicht, G. Schwaab, M. Havenith, Phys. Chem. Chem. Phys. 18, 24063 (2016).

"Understanding the ionic liquid [NC 4111][NTf 2] from individual building blocks: An IR-spectroscopic study", K. Hanke, M. Kaufmann, G. Schwaab, M. Havenith, C.T. Wolke, O. Gorlova, M.A. Johnson, K. Bishnu, W. Sander, E. Sanchez-Garcia, Phys. Chem. Chem. Phys. 17, 8518 (2015).

"High resolution spectroscopy of HCl-water clusters: IR bands of undissociated and dissociated clusters", M. Letzner, S. Grün, D. Habig, K. Hanke, T. Endres, P. Nieto, G. Schwaab, Ł. Walewski, M. Wollenhaupt, H. Forbert, D. Marx, M. Havenith, J. Chem. Phys. 139, 154304 (2013).

"Aggregation induced dissociation of HCl (H2O)4 below 1 K: The smallest droplet of acid", A. Gutberlet, G. Schwaab, Ö. Birer, M. Masia, A. Kaczmarek, H. Forbert, M. Havenith, D. Marx, Science 324, 1545 (2009).

"Observation of ro-vibrational transitions of HCl, (HCl)2 and H2O-HCl in liquid He nanodroplets", M. Ortlieb, Ö. Birer, M. Letzner, G.W. Schwaab, M. Havenith, J. Phys. Chem. A 111, 12192 (2007).

"Probing phonon-rotation coupling in Helium nanodroplets: IR spectroscopy of CO and its isotopomers", K. von Haeften, S. Rudolph, I. Simanowski, M. Havenith, R.E. Zillich, K.B. Whaley, Phys. Rev. B 73, 054502 (2006).

"High resolution spectroscopy of NO in helium droplets: A prototype for open shell molecular interactions in a quantum solvent", K. von Haeften, A. Metzelthin, S. Rudolph, V. Staemmler, M. Havenith, Phys. Rev. Lett. 95, 21531 (2005).