| Abstract
| - Time-resolved magnetic resonance experiments (TREPR and CIDNP) are used to investigate previously unobservedredox chemistry of the surfactant dioctyl sulfosuccinate ester (AOT) using the photoexcited triplet state of anthraquinone2,6-disulfonate (3AQDS*). Several different free radicals resulting from two independent oxidation pathways (electrontransfer and hydrogen abstraction) are observed. These include the radical ions of AQDS and sulfite from electron-transfer processes, carbon-centered radicals from H-atom abstraction reactions, and an additional carbon-centeredradical formed by electron transfer from the AOT sulfonate head group followed by the loss of SO3. The radicals exhibitintense chemically induced dynamic electron spin polarization (CIDEP) in their TREPR spectra. The intensity ratiosof the observed TREPR signals for each radical depend on the water pool size and temperature, which in turn affectthe predominant CIDEP mechanism. All signal carriers are accounted for by simulation, and CIDNP results providestrong supporting evidence for the assignments.
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