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Rapid Scan Electron Paramagnetic Resonance Opens New Avenues for Imaging Physiologically Important Parameters In Vivo
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Nano-emulsions of fluorinated trityl radicals as sensors for EPR oximetry

N Charlier1, B Driesschaert, N Wauthoz

  • 1Université catholique de Louvain, Laboratory of Biomedical Magnetic Resonance, REMA, Brussels, Belgium.

Journal of Magnetic Resonance (San Diego, Calif. : 1997)
|January 9, 2009
PubMed

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Ideally, an unpaired electron shows a single peak in the EPR spectrum due to the transition between the two spin energy states. However, coupling interactions can occur between the spins of the unpaired electron and any neighboring spin-active nuclei. This hyperfine coupling results in hyperfine splitting, where the EPR signal is split into multiplets. The signals split into 2nI + 1 peaks, where n is the number of equivalent nuclei and I is the nuclear spin. These splitting patterns provide...