Aqueous solutions of poly(vinyl pyrrolidone)-fullerene complexes (PVP-C-70) have been studied using static and dynamic light scattering methods. Two diffusive processes were detected. The slow diffusion was interpreted as dynamics of large intermolecular PVP-C-70 complexes while the fast diffusion was associated with the presence of individual PVP molecules in solution. It was also shown that the molecular weights and dimensions of PVP-C-70 Complexes are smaller than for PVP-C-60 by a factor of 2.5-3. In aqueous solutions of PVP-C-70 complex the depolarization and dissymmetry of scattered light were observed in contrast to PVP-C-60 solutions. It reveals the existence of anisotropic structures in PVP-C-70 Solutions. Intermolecular interactions within PVP-C-70 complexes are weak and a hydrodynamic field can destroy complexes. (C) 2003 Published by Elsevier Science Ltd.