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Photoluminescence images and sample intensity transients for MEH-PPV/Tol (a and b) and MEH-PPV/Clf (c and d). Photoluminescence of the molecules was excited with 200 W/cm2 at a wavelength of 488 nm and circular polarization. The intensity variation between the molecules may be because of the large polydispersity of the molecular weight. The Inset above b shows the chemical structure of MEH-PPV.
