Figure 5: Fluorescence spectra and quantum yield.
From: An insight into non-emissive excited states in conjugated polymers
(a) Fluorescence spectra (normalized to the 0-1 transition peak) of the triblock in solvent mixtures of toluene and poor solvents under excitation at 560 nm. The volume percent of poor solvent in each mixture is shown in the parenthesis. (b) Fluorescence quantum yield (QY) of the triblock as a function of dielectric constant (ɛ) of the solvent mixtures. From left to right, the solvent mixture becomes more and more polar as listed in Table 1. The inset presents the plot of QY versus the reciprocal of dielectric constant. From left to right, the solvent mixture becomes more and more nonpolar. The error bars in (b) and inset depict the standard deviations of the fluorescence QY.
