The photoexcited triplet of C70, in toluene, was investigated by time-
resolved EPR spectroscopy. Over the entire range of temperatures (8-21
3 K) the resulting early-time signal is attributed to the polarized EP
R triplet spectrum, which evolves in time into a thermalized spectrum.
Similar to the case of C-3(60), the narrow liquid-phase spectrum is d
ue to rotational narrowing of the thermal triplet. At both low and hig
h temperatures the results indicate the coexistence of two triplets, d
iffering greatly in their relaxation rates.