Possibility of fractal growth in polymer composites of charge-transfer materials

The possibility of fractal growth in polymer composites of charge-transfer materials by analysing the optical image has been reported. Charge-transfer complexes usually grow in reticulate (net-like) or in a channel form in nonconducting polymers. We report, for the first time, an unusual growth in polymer composite of charge-transfer materials (phenothiazine—TCNQ) in poly(vinyl acetate). The surface coverage is found to be about 70%. The double logarithmic plot of N(R), number of boxes needed to cover the object completely, and R, reduction factor of each box to the initial object, has been plotted and the fractal dimensions have been found to be 1.8 and 1.4 in two different regions.