Figure 7.

Correlation between the position of the S₀ → S₂ electronic transition and the ν1 band frequency for different N_eff and polarizability of the environment for linear carotenoids at room temperature. The values of fucoxanthin (pink triangles), 3-hydroxyechinenone (red triangles) and canthaxanthin (green squares) are plotted for different solvents according to [88,89]. For simplicity, the name of the solvent is not written and the arrows of the corresponding colour mark the tendency with increasing polarizability from n-hexane to carbon disulfide.