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- W2037400719 abstract "Stable nanoparticle dispersions of 2,7-poly(9,9-dialkylfluorene-co-fluorenone) (PFFO) and of PFFO/cellulose acetate butyrate (CAB) mixtures with particle size ranging between 5 and 500 nm were prepared by miniemulsification in the presence of a cationic surfactant. Photoluminescence spectra of nanoparticle dispersions showed that the decrease of particle size and of the PFFO/CAB mass ratio induced the progressive suppression of the PFFO excimer emission band at 535 nm. This behavior was associated with the limited ordered structure and π-stacking arrangement of PFFO molecules when confined within nanoparticles smaller than 150 nm or in the presence of CAB molecules. All nanoparticle dispersions displayed high dimensional stability; however, the relative intensity of the excimer emission band increased upon aging reflecting excimer formation due to the high mobility of PFFO chains (Tg −20 °C) or fluorene moiety oxidation." @default.
- W2037400719 created "2016-06-24" @default.
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- W2037400719 date "2010-08-30" @default.
- W2037400719 modified "2023-10-15" @default.
- W2037400719 title "Photoluminescence of 2,7-Poly(9,9-dialkylfluorene-<i>co</i>-fluorenone) Nanoparticles: Effect of Particle Size and Inert Polymer Addition" @default.
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- W2037400719 doi "https://doi.org/10.1021/la1011742" @default.
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