Energy Dispersive X-Ray Analysis and Micro-Raman Studies of Poly (3,4-Ethylenedioxythiophene) Modified by Metal Hexacyanoferrates

Hybrid conducting films, obtained by modification of poly(3,4-ethylenedioxytiophene) doped with Fe(CN)₆^4-/3- ions by multi-cyclic polarization in aqueous FeCl₃, NiCl₂, and CoCl₂ electrolytes, were examined by Energy Dispersive X-ray (EDX) and Micro-Raman measurements. EDX analysis allows to propose composition of metal hexacyanoferate (Mehcf) obtained inside polymer matrix as follows: Fe₄[Fe(CN)₆]₃, Co₃[Fe(CN)₆]₂, NiFe[Fe(CN)₆] for materials modified in FeCl₃, CoCl₂ and NiCl₂ aqueous electrolytes respectively. Micro-Raman measurements show that the signal from CN is hindered for hybrid systems in comparison with inorganic Mehcf.

Stoichiometry of inorganic part of the hybrid materials has been established by means of EDX measurements.