Abstract
Polyacetylene (PA) films, from ten different syntheses, were n-doped with 14 organopotassium compounds including carbanions and radical-ion salts in tetrahydrofuran (THF). The maximum doping level for a given dopant is higher for cis than for trans isomer and is relatively independent of film synthesis conditions. The measured doping levels correlate well with the redox potential of dopants when these values are available. This allows a thermodynamic control of the chemical doping level over a wide range. Inversely, our classification by increasing doping efficiency allows a new semiquantitative scale to be established of oxidation potential of highly reactive carbanionic salts for which no data are available yet.
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