The unique character of the triffimide anion has been revealed in a study of how the doping anion affects the properties of conducting polymer thin films using poly(3-methylthiophene) doped with triflimide ((CF3SO2)2N⊖), perchlorate (CIO⊖). Variations in film morphology, conductivity, and the time dependence of the conductivity are described. Particularly noticeable are the differences in surface de-doping, which lasts of up the one month in the trifflimide-doped films.
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