Electrical conductivity of poly(2‐ethynylthiophene) and poly(2‐ethynylfuran) doped with electron acceptors

The electrical conductivity of poly(2‐ethynylthiophene) (P2ET) and poly(2‐ethynylfuran) (P2EF) doped with electron acceptors such as iodine, bromine, and ferric chloride was investigated. The maximum electrical conductivities of P2ET and P2EF doped with iodine were 3 × 10 −4 Ω −1 cm −1 and 5 × 10 −3 Ω −1 cm −1 , respectively. The electrical conductivity was nearly independent with increasing molecular weight. The spectral measurements such as UV‐visible, infrared, electron paramagnetic resonance, thermogravimetric analysis, and X‐ray diffraction were also carried out.