Фізика і хімія твердого тіла (Apr 2019)

Features of the Structure and Physical-Chemical Properties of Poly-Ortho-Toluidine Doped with Toluenesulfonic Acid

  • A. L. Stepura,
  • O. I. Aksimentjeva,
  • P. Y. Demchenko

DOI
https://doi.org/10.15330/pcss.20.1.82
Journal volume & issue
Vol. 20, no. 1
pp. 77 – 82

Abstract

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Features of crystal structure, electrical conductivity and thermal stability of poly-ortho-toluidine (PoTi) samples, obtained with method of oxidative polymerization in the environment of sulfuric and toluenesulfonic acids (TSA), were investigated. It was discovered that PoTi-TSA samples are characterized withhigh crystallinity. According to the physico-chemical analysis, doping samples with TSA causes increase of PoTi thermal stability, electrical conductivity and sensor sensitivity on the contrary to samples doped with sulfuric acid. Based on temperature dependence of specific resistance, were calculated the values of the conductivity activation energy, which are within the limits of 0.2-0.4 eV depending on the type of dopant.

Keywords