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- W2040392873 abstract "We present studies of the photoluminescence (PL), absorption, and Raman scattering spectra from $mathrm{poly}[2,7ensuremath{-}({9,9}^{ensuremath{'}}ensuremath{-}mathrm{bis}(2ensuremath{-}mathrm{ethylhexyl}))mathrm{fluorene}]$ under hydrostatic pressures of 0--100 kbar at room temperature. The well-defined PL and associated vibronics that are observed at atmospheric pressure change dramatically around 20 kbar in the bulk sample and at around 35 kbar for the thin-film sample. Beyond these pressures the PL emission from the backbone is swamped by strong peaks due to aggregates and keto defects in the 2.1--2.6 eV region. The Raman peaks shift to higher energies and exhibit unexpected antiresonance line shapes at higher pressures, indicating a strong electron-phonon interaction." @default.
- W2040392873 created "2016-06-24" @default.
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- W2040392873 date "2003-09-11" @default.
- W2040392873 modified "2023-10-07" @default.
- W2040392873 title "Hydrostatic pressure dependence of the luminescence and Raman frequencies in polyfluorene" @default.
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- W2040392873 doi "https://doi.org/10.1103/physrevb.68.115203" @default.
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