Conducting reticulate doped polymeric films containing BEDT-TTF iodide crystalline networks have been annealed in order to transform the crystallites into crystal phases with metallic conductivity. The microwave conductivity of these films was measured before and after annealing. The temperature dependence of the conductivity changes dramatically with optimal annealing temperatures and times. This change in the behavior corresponds to the transformation of the α-phase into the superconducting α_{t}-phase observed in (BEDT-TTF)_{2}I_{3} single crystals.
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