Figure 4.

A) pH‐dependent UV/Vis absorption spectra and B) pH‐dependent normalized emission spectra of P[MEO₉MA_x ‐ co ‐VN_y] in aqueous solution. The insets show the estimated pK _a and pK _a* values. C) Possible photophysical processes upon excitation of 1‐naphthol in the photoacid copolymers within the core and interfacial regions. In this context k _nr and k _r refer to the respective non‐radiative and radiative decay rate constants of electronically excited protonated species ROH^* and deprotonated species RO^−*.