Two-step laser excitation fluorescence study of the magnetic field effect on the hydrogen abstraction reaction of anthraquinone in SDS micellar solution

The magnetic field effect on the hydrogen abstraction reaction of anthraquinone in sodium dodecyl sulfate (SDS) micellar solution has been studied by two-step laser excitation fluorescence including a variable delay technique. The risetime of the “cage product” is 380 ns at 0 G and 890 ns at 800 G, while its yield decreases by 20% at 800 G. The results are interpreted in terms of the radical pair model of CIDNP.