PHOTOINDUCED ELECTRON-TRANSFER FROM TRIPLET FULLERENE, C-3(60), TO TETRACYANOETHYLENE - FOURIER-TRANSFORM ELECTRON-PARAMAGNETIC-RESONANCE STUDY

Fourier transform EPR spectroscopy was employed in studying the electr on transfer (ET) and the quenching mechanisms of the photoexcited trip let state of C-60 (electron donor) in the presence of the electron acc eptor tetracyanoethylene (TCNE) in a benzonitrile solution. The ET rea ction product, which is the stable anion radical TCNE-, interacts with C-3(60) (both detected by EPR in the liquid phase), leading to chemic ally induced dynamic electron polarization of TCNE-, via triplet-doubl et mixing mechanism.