Figure 1.

Summary of synthetic steps for the preparation of the TiO₂/PMAA nanoparticle SABRE catalysts (NPCs). The ratio of aminopyridine/catalyst moieties to polymer strands is expected to be ∼1:1; the final structure is depicted with one possible configuration, with the catalyst moiety bound to a terminal aminopyridine group; aminopyridine/catalyst moieties may also functionalize repeat units. Bare TiO₂ NPs, NPs coated/infused with PMAA, and final functionalized NPCs are shown in gray, light blue, and orange/red, respectively. Components are not drawn to scale.