Recently developed photoconductive polymer systems, polyparacyclophanes doped with low-molecular-weight acceptors, combine high charge carrier mobility provided by extended π-electron systems along cofacially arrayed aromatic rings, with effective photogeneration in visible range due to formation of charge-transfer complexes with the dopants. In a series of polyparacyclophane complexed with different benzoquinones it was found that the photoconductivity gain coefficient in the visible range increases with increasing electron affinity of the dopant and that the gain coefficient is higher for higher dopant concentration. The influence of the charge-transfer complex formation between various polyparacyclophanes and various acceptors on the charge carrier generation both in the dark and under illumination is discussed.
Conducting reticulate doped polymeric films containing BEDT-TTF iodide crystalline network were annealed in order to transform the crystallites into crystal phases with metallic conductivity. Measured optical absorption spectra show that annealing shifts the absorption band to higher frequencies and increases the transparency of the films. This behavior corresponds to the transformation of the α-phase into the superconducting α_{t}-phase observed in (BEDT-TTF)_{2}I_{3} single crystals.
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.
Electrical properties of conducting reticulate doped polymeric films containing BEDT-TTF iodide crystalline network were investigated. Conditions of preparation of this kind of films i.e. time of doping by iodine vapours and time and temperature of annealing and their influence on transformation of the BEDT-TTF iodide crystallites into superconducting phase are discussed.
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