On the optical properties of trans-polyacetylene
- 15 August 1983
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 79 (4) , 2085-2086
- https://doi.org/10.1063/1.445994
Abstract
The optical properties of undoped polyacetylene are discussed. Specular reflection spectra from freestanding cis- and trans-(CH)x films are compared to transmission spectra from thin films. It is shown that the ‘‘true’’ absorption spectrum of well ordered, long chain trans-polyacetylene has a well defined 0–0 transition at 12 000 cm−1 followed by vibrational structure. This suggest an excitonic assignment for the lowest energy optical transition. In thin films conjugation length dispersion is shown to be a major source of disorder dominating the optical properties. (AIP)Keywords
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