Abstract: C₆₀-polymethyl methacylate (PMMA) composite films were prepared by the chemical organic deposition method with the different weight ratios C₆₀ to
PMMA. The measurements of Fourier transform infrared (FTIR) spectra for the as-prepared films show that C₆₀ molecules are embedded into PMMA. X-ray diffraction
(XRD) and transmission electron microscope (TEM) were employed to study the structures of the films. The measurement results suggest that C₆₀ molecules
in the films tend to aggregate each other and to form some tiny C₆₀ crystallites due to the increase in the C₆₀ content. TEM observition shows that regular
C₆₀ crystallites of about 30-100nm are distributed homogeneously in the PMMA film. The selective area diffraction indicates that the crystallized
particles in the films are single crystal ones with fcc structure. The theory of Boltzmann distribution well explains the phenomenon that C₆₀
crystallite size increases with increasing C₆₀ content or annealed at enhanced temperature.

Key words: nano-structure, C₆₀-PMMA