Redox-Selective Macromolecular Electrolysis for Sequential Functionalization and Deconstruction

Area of Science:

• Polymer Chemistry
• Electrochemistry
• Materials Science

Background:

• Macromolecular modifications often lack precise control, limiting material property tuning.
• Developing selective methods for polymer functionalization and degradation is crucial for advanced materials.

Purpose of the Study:

• To demonstrate selective macromolecular electrolysis on copolymers with redox-orthogonal targets.
• To achieve precise control over post-polymerization modifications and polymer backbone deconstruction.

Main Methods:

• Designing macromolecules with phthalimide and tetrachlorophthalimide (meth)acrylates for distinct redox potentials.
• Utilizing controlled applied voltage to trigger polymer-centered radical reactions like hydrogen atom transfer or β-scission.

Main Results:

• Achieved selective electrochemical control over post-polymerization modifications.
• Demonstrated sequential transformations to tune the glass transition temperature of copolymers (-54 to 125 °C).
• Maintained selectivity in polymer blends and synthesized challenging copolymers.

Conclusions:

• Macromolecular electrolysis offers a powerful tool for selective material functionalization and degradation.
• Expands possibilities for post-polymerization modification, targeted degradation, and creating stimuli-responsive materials.