Morphology, molecular and electronic structure of the composite material based on graphene oxide and polyaniline

A composite material based on graphene oxide (GO) and polyaniline (PANI) was synthesized. By methods of scanning electron microscopy, Raman scattering, infrared spectroscopy confirmed the formation of the composite material, which is nanofibers of PANI in protonated state, tightly wrapped around agglomerated multilayered (2–3 layers) GO nanosheets. The optical bandgap width of the GO-PANI composite is reduced compared to that of the pure PANI, which makes it promising to use this material in supercapacitors and optical devices.