Salt Formation as a Regioselectivity Tuning Strategy in Topochemical Polymerization: Generating Two Structurally Distinct Polymers from One Monomer

-triazole-linked polymer chains. This stereocomplex formation involved a significant rotational rearrangement of the propargyl group (110°) while maintaining crystal integrity. This work establishes crystalline salt formation as a powerful tool for directing chemical reactivity, tuning the regiochemistry of topochemical reactions, and controlling chain packing modalities in the solid state.