Properties Of Polyacetylene Research Articles

Synthesis, structure and properties of polyacetylene

From the results of X-ray structural studies, scanning and transilluminating electron microscopy and also the IR spectra the authors characterize the structure, morphology and properties of polyacetylene as a function of the conditions of synthesis—nature of solvent, temperature of polymerization and the concentration of catalyst. It is shown that polyacetylene with the largest MW and size of the crystalline and the least crosslinked forms in presence of the catalytic system Co(NO 3) 2NaBH 4 in DMFA medium.

Frequency Dependence of The Conductivity and Dielectric Constant of Ch(Ircl6) Y and Ch(I)Y

Abstract We have measured the ac properties of polyacetylene doped with H2IrCl6 6H2O and I2 from 105 to 107 Hz at room temperature. We find in both cases that the conductivity is only weakly dependent on frequency, in agreement with previous work.1,2 However, we find that the dielectric constant of CH(IrCl6)y is anomalously large ≃104. We suggest that the large dielectric constant can be modeled by an effective medium theory assuming that the CH(IrCl6)y is a mixture of conducting and insulating regions. TEM evidence in support of the model will be presented. The results of CH(IrCl6)y will be contrasted with CH(I)y where TEM evidence shows a uniform distribution of dopant in the polyacetylene and the dielectric constant is significantly lower.

Properties of polyacetylene obtained from Green's functions in the coordinate representation

Properties of polyacetylene obtained from Green's functions in the coordinate representation

Electrical and optical properties of polyacetylene heavily doped with I2 and HSO3F

Variation de la conductivite electrique et des spectres d'absorption optique du polyacetylene, avec la temperature

Electrical properties of polyacetylene doped with dihydrogen hexachloroiridate

Polyacetylene has been doped from solution (nitromethane ) with dihydrogen hexachloroiridate (H2IrCl6·6H2O) to form an electrically conductive complex.

The role of AsF5 in modifying the electrical properties of polyacetylene, (CH) x

In contrast to previous results we present evidence that AsF5 reacts with polyacetylene to oxidize the (CH)x chains, in analogy with other acceptors, and to form AsF6– anions, which intercalate between the polyolefinic cation chains.

Preparation and properties of polyacetylene

Preparation and properties of polyacetylene