Photoinduced electron transfer from triplet fullerene, 3C60, to tetracyanoethylene. Fourier transform electron paramagnetic resonance study

Fourier transform EPR spectroscopy was employed in studying the electron transfer (ET) and the quenching mechanisms of the photoexcited triplet state of C[sub 60] (electron donor) in the presence of the electron acceptor tetracyanoethylene (TCNE) in a benzonitrile solution. The ET reaction product, which is the stable anion radical TCNE[sup [minus]], interacts with [sup 3]C[sub 60] (both detected by EPR in the liquid phase), leading to chemically induced dynamic electron polarization of TCNE[sup [minus]], via triplet-doublet mixing mechanism. 30 refs., 3 figs., 1 tab.