IR absorption, photoinduced IR absorption, and photoconductivity of polyaniline

The infrared spectra, photoinduced infrared spectra, and photoconductivity of polyaniline are reported. Oxidative doping of leucoemeraldine base yields changes that are consistent with breaking the symmetry of the polymer and an overlap of the vibrational modes with a continuum of states. Small phot...

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Bibliographic Details
Published in:Synthetic metals 1989-03, Vol.29 (1), p.433-438
Main Authors: McCall, R.P., Roe, M.G., Ginder, J.M., Kusumoto, T., Epstein, A.J., Asturias, G.E., Scherr, E.M., MacDiarmid, A.G.
Format: Article
Language:English
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Summary:The infrared spectra, photoinduced infrared spectra, and photoconductivity of polyaniline are reported. Oxidative doping of leucoemeraldine base yields changes that are consistent with breaking the symmetry of the polymer and an overlap of the vibrational modes with a continuum of states. Small photoinduced changes in the vibrational modes of emeraldine base also indicate this symmetry breaking and the creation of polarons. The absence of significant photoconductivity suggests that the photoexcited polarons have low mobility. Calculations based on the amplitude mode formalism give a very large polaron mass in emeraldine base, consistent with low polaron mobility.
ISSN:0379-6779
1879-3290
DOI:10.1016/0379-6779(89)90329-9