Berlin 2014 – scientific programme

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MO: Fachverband Molekülphysik

MO 19: Femtosecond Spectroscopy 2

MO 19.4: Talk

Thursday, March 20, 2014, 17:15–17:30, BEBEL HS213

Excited-State Dynamics of the 2-Methylallyl Radical — •Jörg Herterich, Thiemo Gerbich, and Ingo Fischer — Institut für Physikalische und Theoretische Chemie, Universität Würzburg

The excited-state dynamics of hydrocarbon radicals is not well understood and only a few species have been studied. In many radicals, the electronically excited states are short-lived due to rapid internal conversion (IC). This fast deactivation can be used to prepare internally hot radicals for further studies of their unimolecular reactions. The excited-state dynamics of the 2-methylallyl radical are studied by time-resolved photoionization. The radical, which is relevant for combustion processes, is generated by pyrolysis from the corresponding bromide. The lifetime of the electronically excited B state was measured to be 14 ps and shorter.