Abstract
Poly(3-butylthiophene-co-3-bromothiophene) film was electrochemically deposited onto stainless steel electrodes from freshly distilled boron fluoride ethyl ether. The reactivity ratios of r 1=0.52 (for 3-butylthiophene) and r 2=0.95 (for 3-bromothiophene) were obtained by the Fineman–Ross method based on IR measurements. The results are very important for controlling the composition of copolymers. The poly(3-butylthiophene-co-3-bromothiophene) films are flexible with a tensile strength of 18.3 MPa. The conductivities of the copolymer films are in the range of 10 1–10 −2 S/cm.
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