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- W2045247175 abstract "We present polarisation-dependent measurements of optical absorption, reflectivity, photoinduced absorption (PA) and photoconductivity (PC) on stretch-oriented films of Durham-route polyacetylene. We have looked, in particular, for evidence that optical absorption of band-gap light polarised with the E vector perpendicular to the chains is due to inter-chain excitation from π to π∗ states. We find that the spectral dependence of the optical absorption and its temperature derivative is different for the two polarisations, and that there is evidence that the long-lived photoexcited charge states that give rise to PA and PC are preferentially excited with E polarised perpendicular to the chains. At excitation levels sufficiently low to give a linear response we find an anisotropy between the two polarisations of about 4. We find some differences between PA and PC in oriented Durham polyacetylene and as reported in Shirakawa polyacetylene, and we discuss these briefly." @default.
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- W2045247175 date "1987-01-01" @default.
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- W2045247175 title "Photoexcitation in oriented polyacetylene" @default.
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- W2045247175 doi "https://doi.org/10.1016/0379-6779(87)90765-x" @default.
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