Polyaniline complex with fullerene C-60

Polyaniline-fullerene composites were prepared either by solid-state blending of both components (composite I) or by the introduction of fullerene during polymerization of aniline (composite II). Composite I had a lower conductivity (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 spectroscopy indicated the interaction between polyaniline and fullerene. X-ray diffractograms suggest that the mechanical blending of the components leads to a decrease in the size of fullerene crystallites. In composite II; the diffractograms proved the formation of a polyaniline-fullerene complex comprising the structure corresponding to a doped polyaniline. (C) 2000 Elsevier Science Ltd. All rights reserved.