This chapter begins with the introduction of the conventional polymer ion sensors that are based on the optical sensors of njugated polymers. This is followed by the recent fluorescent polymer ion sensors based on poly(triazole) building blocks prepared by the Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC), known as a typical click chemistry reaction. Finally, the colorimetric visual detection of ion recognition behaviors is focused on using nonplanar donor-acceptor chromophores prepared by new types of click chemistry reactions. |