Fig. 7. (Color online) Excitation spectra of PPO calculated and measured with a density functional theory-based code. On the left is the excitation spectrum of PPO dispersed in cyclohexane. The green color shown here is the excitation spectrum line and the purple-sky color is the spectrum line with the resolution effect applied to the excitation spectrum line. In the figure on the right, purple-sky is the calculated excitation spectrum of PPO dispersed in LAB rather than cyclohexane. Brown-yellow is the actual measured LAB+PPO excitation spectrum. The red arrow indicates that the spectrum is red-shifted.
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