Abstract
AbstractElectronic and vibrational spectra of poly(p‐phenylenevinylene) doped with donors or acceptors have been studied, together with the spectra obtained for the radical ions and divalent ions of its oligomers. The electronic absorption spectra of doped poly(p‐phenylenevinylene) in the region from visible to near‐infrared show two bands for the H2SO4‐doped species and one very broad band for the Na‐doped species. On the basis of the analyses of resonance Raman spectra, the two electronic absorption bands of the H2SO4‐doped species are attributed to a polaron‐lattice structure, whereas the broad band of the Na‐doped species is attributed to overlapping absorptions associated with localized electronic levels of polarons and bipolarons. A Pauli spin susceptibility of the H2SO4‐doped species is explained by the polaron‐lattice structure.
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