Thermal conductivity of polyacetylene

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Abstract
The thermal conductivity of polyacetylene has been measured in the temperature range of 0.8 to 300 K. For T5‐doped samples and of doped samples which have been compensated with (CH3)2NH into the insulating state. The undoped sample shows a T2‐temperature dependence up to 12 K followed by a decreasing power law at higher temperatures and a thermal conductivity value of 4 mW/K cm at room temperature. Doping and even compensating increases the thermal conductivity below 12 K. This additional conductivity is therefore explained by a change in the phonon boundary scattering at the interfaces between crystalline and amorphous regions of polyacetylene and not by a contribution of charge carriers to the thermal conductivity.