Using postpolymerization functionalization, we have prepared a new solution-processable
electroactive polymer combining electrochemical properties of poly(thiophene)s and oligoanilines. The
elaborated procedure consists of three steps. First, 3-octylthiophene and ethyl 3-thiopheneacetate are
copolymerized to give poly(3-octyl-2,5-thienylene-co-3-methylene-ethylcarboxylate-2,5-thienylene)the
precursor polymer. The precursor is then hydrolyzed, and in the last step, aniline dimer is attached to it
via amidation reaction. UV−vis−NIR and Raman spectroelectrochemical studies combined with cyclic
voltammetry show that, as expected, both poly(thienylene) main-chain and dianiline side groups can be
oxidatively doped, the latter adopting, upon oxidation, the structure of semiquinone radical cation.
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