Fig. 5

UV-Vis absorption changes of PPV₁₂-b-P2VP_n in 2-PrOH solution. The varying UV-Vis absorption spectra of a PPV₁₂-b-P2VP₁₂ in 0.01 mg mL⁻¹ 2-PrOH solution; b PPV₁₂-b-P2VP₁₂ in 0.0025 mg mL⁻¹ 2-PrOH solution; c PPV₁₂-b-P2VP₁₆ in 0.01 mg ml⁻¹ 2-PrOH solution; d PPV₁₂-b-P2VP₁₆ in 0.0025 mg ml⁻¹ 2-PrOH solution; e PPV₁₂-b-P2VP₂₂ in 0.05 mg ml⁻¹ 2-PrOH solution; f PPV₁₂-b-P2VP₂₂ in 0.01 mg ml⁻¹ 2-PrOH solution; g PPV₁₂-b-P2VP₃₆ in 0.05 mg ml⁻¹ 2-PrOH solution; and h PPV₁₂-b-P2VP₃₆ in 0.01 mg ml⁻¹ 2-PrOH solution. All the sample solutions were heated at 85 °C for 30 min, then naturally cooled down to room temperature followed by aging for another ~ 20 h or more