Recent advances in microelectronic and optoelectronic industries have spurred interest in the development of reticulate doped polymer films containing “metallic” charge transfer complexes. In this study, such reticulate doped polymer films were prepared by exposing solid solutions of bis(ethylenedioxy) tetrathiafulvalene (BEDO-TTF) in polycarbonate (PC) to iodine, forming conductive charge transfer complexes. The resulting films exhibited room temperature conductivities ranging from 6.33 to ？S？？ ？？cm？1. The colored iodine complexes in the film were reduced by cyclic voltammetry yielding conductive, colorless, transparent films. We were intrigued to examine the dielectric properties of BEDO-TTF in solid solution in PC prior to formation of the charge transfer complex as no such studies appear in the literature. Dielectric analysis (DEA) was used to probe relaxations in neat PC and BEDO-TTF/PC. BEDO-TTF plasticized the PC and decreased the glass transition temperature. Two secondary relaxations appeared in PC films, whereas the transitions merged in the BEDO-TTF/PC film. DEA also evidenced conductivity relaxations above 180°C which are characterized via electric modulus formalism and revealed that BEDO-TTF increased AC conductivity in PC. 1. Introduction In the last few decades, there has been growing interest in conductive polymers and composites due to an array of potential applications in biological and chemical sensors, separations, microelectronics circuit boards, biomedical, coatings, and optical displays [1–5]. The ability to prepare thin, flexible, transparent films is an asset in applications requiring nanostructuring and miniaturization [6]. Conductivity is a general property of metals, but some polymers in combination with organic charge moieties exhibit metallic behavior [7]. After the discovery of the first organic superconductor, (TMTSeF)2PF6, a growing number of organic charge transfer complexes and conductive salts have been investigated [8]. These salts exhibit a charge transfer between a donors and acceptors in the solid state; the donors and acceptors molecules form segregated stacked sheets of cations and anions, respectively [9–11]. These materials also have low critical temperatures, Tcs (the temperature below which material is superconducting). (TMTSeF)2PF6 was subsequently replaced by another class of organic superconductors with BEDT-TTF (bis(ethylenedithio)tetrathiafulvalene) donors (Figure 1(a)) containing sulfur heterocycles [9]. The peripheral sulfur atoms allow better orbital overlap between donor stacks, forming a
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