Abstract

The X-band ESR spectrum of the high-resolution amphiphilic spin probe perdeutero-di- t-butyl nitroxide (PDDTBN), partitioning in the lipid and water phase of lecithin liposomes, shows all three resonances from each phase well resolved. We report the results obtained from model membrane partition studies also in the presence of α-tocopherol and discuss the advantages of using this probe with respect to using the more popular piperidine nitroxide TEMPO.

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