Heidelberg 2015 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 5: Posters 1: Novelties in Molecular Physics

MO 5.18: Poster

Montag, 23. März 2015, 17:00–19:00, C/Foyer

Infrared Spectroscopy of Helium Solvated π-conjugated Organic Radicals — •Daniel Leicht, Daniel Habig, Matin Kaufmann, Gerhard Schwaab, and Martina Havenith — Physikalische Chemie II, Ruhr-Universität Bochum

Helium nanodroplet infrared spectroscopy is a well established experimental technique to study weakly bound complexes as well as reactive species. [1] Superfluid helium hardly interacts with the embedded species, which leads to only small matrix-induced shifts. Recently, different reactive molecules (e.g. organic radicals) have been studied using helium nanodroplet spectroscopy. [2,3] In this work we present some of our latest results regarding π-conjugated radicals. Examples are allyl, benzyl and cyclopentadienyl radicals that are important intermediates in many reactions in e.g. combustion, explosives and in tropospheric chemistry. Apart from studying the bare radical also aggregates with other molecules (e.g. allyl radical + HCl) and reactions at cold temperatures (e.g. allyl radical + NO [2]) can be investigated using our technique.

[1] M. Choi, G. Douberly, T. Falconer, W. Lewis, C. Lindsay, J. Merritt, P. Stiles and R. Miller, International Reviews in Physical Chemistry, 2006, 25, 15-75

[2] D. Habig, D. Leicht, M. Kaufmann, G. Schwaab, M. Havenith, The Journal of Chemical Physics, 141, 044312 (2014)

[3] Jochen Küpper, Jeremy M. Merritt, International Reviews in Physical Chemistry, 26, Iss. 2, 2007