Fourier Transform EPR (Electron Paramagnetic Resonance) of chemical reactions

descriptionPublicationkeyboard_double_arrow_right Report , Other literature type 01 Jan 1990Publisher:Office of Scientific and Technical Information (OSTI)

Authors: R. Massoth; M. Bowman;

doi: 10.2172/6985694

Fourier Transform EPR (Electron Paramagnetic Resonance) of chemical reactions

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Abstract

Transient free radicals formed by laser photolysis have been measured in solution by Fourier Transform Electron Paramagnetic Resonance. The high resolution spectra positively identify the initial free radicals formed from the quenching of triplet duroquinone by triethylamine in solution. The spectra were used to follow the kinetics of the free radicals from less than 10{sup -8} s to 10{sup -2} s. The kinetics are well described by a model based on simple chemical reactions and triplet mechanism chemically-induced dynamic electron polarization. Numerical estimates are obtained for ratios of the rates of various reaction steps. 5 refs., 2 figs.

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