Abstract
Resonant Raman scattering is used to characterize the disorder in trans-(CH)x. Using experimental relations between the phonon frequencies and the selectively probed energy gaps, we characterize the various forms of polyacetylene by the functional dependence of the gap 2Δ on the force constant. For cis-rich trans-(CH)x samples the disorder breaks the two-fold ground state degeneracy while for all-trans-(CH)x samples the disorder preserves the inversion symmetry Δ → −Δ.
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Ehrenfreund, E., Vardeny, Z., Brafman, O. (1985). Characterization of Disorder in Polyacetylene. In: Kuzmany, H., Mehring, M., Roth, S. (eds) Electronic Properties of Polymers and Related Compounds. Springer Series in Solid-State Sciences, vol 63. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-82569-9_23
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DOI: https://doi.org/10.1007/978-3-642-82569-9_23
Publisher Name: Springer, Berlin, Heidelberg
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