Thin films of ternary nanocomposites between carbon nanotubes, Prussian blue and polyaniline.

The formation of nanocomposites is a way to improve the properties or give new properties to materials. In this perspective, nanocomposites between Prussian blue (PB) and carbon nanotubes (CNT) are very attractive due the synergistic properties resulting from the electrochemical and electrochromic properties of PB and the different properties of CNTs. Our researcher group developed a new route do synthesized these materials by a liquid-liquid interfacial polymerization and the PB can be formed using a heterogeneous reaction with ferric species inside the CNT cavities. Thereby, the objective of this work is prepared ternary nanocomposites between carbon nanotubes, Prussian blue and polyaniline. Polyaniline (PAni) is a conductor polymer which is interesting because of a low cost of monomer and that can be easily synthesized in its more conductive form, the so-called esmeraldine salt. Two synthetic approaches were used to synthesize the ternary composite:.one of them consisting in liquid-liquid interfacial polymerization with PB being formed in aqueous acidic media together with PAni, and the second one is an electrochemical synthesis of both PB and PAni over CNTs films. The formation of nanocomposite was confirmed by different characterization techniques, as XRD and UV-Vis spectroscopy. SEM images show the CNT decorated with both PAni and nanocubes of PB (Figure 1); Raman spectra shows that. PAni was majority in emeraldine salt structure, as well as the presence of CN band, characteristic of PB. The synthesis through interfacial polymerization enables a better processability of the material.