Synthesis and electrophysical properties of carbazolite contained polymer complex

In this study the carbozolite based polymer complexes of the N-methyl carbazole (PMCC), N-vinyl carbazole (PVCC) and N-(2, 3-epoxipropyl) carbazole (PEPCC) with iodine were synthesised and electrical conductivity and density resistive effect were investigated. Synthesis of the polymeric complexes PMCC, PEPCC with iodine was prepared in solid phase in the inert gas-helium by heating appropriate monomers at temperature 323-623-623 K and different mode ratio monomer: iodine. In the result the charge transfer complexes where the polymer is donor and iodine is acceptor were synthesised. The content of iodine in polymers was (36-48) wt.%. The AC conductivity of polymer complexes at 300 K was equal to (0.8-15)10/sup -6/ sigma/sup -1/m/sup -1/ form temperature dependence of conductivity the activation energies were determined (E = 0.12-0.26 eV). The compensative effect showed a linear increase of activation energy on logarithm of the pre-exponential factor (sigma). It means that the mechanism of electrical conductivity in polymeric complexes in identical and the increase of the activation energy of electrical conductivity leads to appropriate rise of the temperature independent (non activated) factor of conductivity. Tensity resistive effect in these complexes was also investigated. The dependence of electrical resistance on mechanical stress under compression were quasi linear. It has been seen that this effect is very high in comparison to ordinary semiconductors (for example, Si piezerosistive coefficients are (0.8-3.2)10/sup -6/ m/sup -2//newton. It is assumed that resistances between grains in press-tablets are more than from their volume resistances. On the basis of these polymers probably, it is possible to manufacture high sensitive resistance strain gauges. (author)