Figure 5

Normalized UV–Vis absorption spectrum (a) and photoluminescence spectrum with 450 nm excitation wavelength (b) of PPV copolymers P1–P6 at 0.25 mg/ml in chloroform.

Normalized UV–Vis absorption spectrum (a) and photoluminescence spectrum with 450 nm excitation wavelength (b) of PPV copolymers P1–P6 at 0.25 mg/ml in chloroform.