Architectural Precision in Sequence-Controlled Terpolymerization from Epoxide/Aziridine/Phthalic Thioanhydride...

Area of Science:

• Polymer Chemistry
• Organic Synthesis
• Materials Science

Background:

• Polymer properties are dictated by monomer sequence.
• Traditional copolymerization is limited by monomer reactivity.
• Catalytic precision engineering allows sequence control beyond thermodynamic constraints.

Purpose of the Study:

• To develop a modular catalytic strategy for atom-level control over poly(thioester amide) sequences.
• To establish a dynamic polymerization platform for precise sequence editing.
• To explore catalyst manipulation for controlling polymer microstructures.

Main Methods:

• Organoammonium-mediated ring-opening copolymerization (ROCOP) of Cbz-aziridine and phthalic thioanhydride.
• Development of a dual-catalytic system integrating salenAl-(III)Cl and PPNOAc.
• Systematic catalyst manipulation in epoxide/aziridine/PTA terpolymerization.

Main Results:

• Achieved atom-level control over poly(thioester amide) sequences.
• Established a dynamic multinucleophilic platform bypassing traditional monomer reactivity hierarchies.
• Demonstrated continuum control over gradient, statistical, and inverse gradient microstructures.

Conclusions:

• The developed synthetic approach provides a generalizable platform for digital precision copolymer fabrication.
• Significantly enhances mechanistic understanding of polymer physics.
• Paves the way for high-impact applications in adaptive biomaterials and intelligent responsive systems.