Hannover 2016 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 3: Electronic Spectroscopy 1
MO 3.8: Vortrag
Montag, 29. Februar 2016, 16:15–16:30, f102
IR/UV Ion Dip Spectroscopy of the Phenyl Radical and Propargyl Radical Self-Reaction — •Philipp Constantinidis1, Hans-Christian Schmitt1, Florian Hirsch1, Ingo Fischer1, Bin Yan2, Arghya Dey2, and Anouk M. Rijs2 — 1University of Würzburg, Institute of Physical and Theoretical Chemistry, Am Hubland, D-97074 Würzburg, Germany — 2Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7-c, 6525 ED Nijmegen, The Netherlands
It is a major concern of combustion research to elucidate the growth mechanisms of polycyclic aromatic hydrocarbons (PAHs), which occur as products of incomplete combustion. Due to their carcinogenic and pollutant nature, efforts are directed towards their prevention.
Our group applies IR/UV ion dip spectroscopy combined with free jet technique to investigate the intermediates and reaction products formed by pyrolytically generated hydrocarbon radicals in a high-temperature flow reactor. The mass-selected IR spectra contain both mass and structural information of the observed species, which allow identification of isomers. As intense tunable IR radiation is needed for this type of experiment, the measurements are performed with the free electron laser FELIX in Nijmegen.
Subject of our study is the self-reaction of propargyl and phenyl radicals, which are assumed to be important components of PAH formation.