Fig. 19From: Poly (aniline-co-aniline-2,5-disulfonic acid) / L-ascorbic acid / Ag@SiO2 / polysafranin nanocomposite: synthesis, characterization and anomalous electrical behaviourMeasured permittivity versus frequency of the (a) organic copolymer (8), (b) copolymer/Ag@SiO2/polysafranin nanocomposite (12) andBack to article page