Polyaniline complex with fullerene C-60

Polyaniline-fullerene composites were prepared either by solid-state blendi ng of both components (composite I) or by the introduction of fullerene dur ing polymerization of aniline (composite II). Composite I had a lower condu ctivity (1.5 x 10(-7) S cm(-1)) than composite II (7.2 x 10(-5) S cm(-1)). Investigation of the composites by solid-state C-13-NMR and FTIR spectrosco py indicated the interaction between polyaniline and fullerene. X-ray diffr actograms suggest that the mechanical blending of the components leads to a decrease in the size of fullerene crystallites. In composite II; the diffr actograms proved the formation of a polyaniline-fullerene complex comprisin g the structure corresponding to a doped polyaniline. (C) 2000 Elsevier Sci ence Ltd. All rights reserved.