Vinyl polymers with fully degradable carbon backbones enabled by aromatization-driven C-C bond cleavage.

Area of Science:

• Polymer Chemistry
• Materials Science
• Organic Chemistry

Background:

• Degrading carbon-backbone polymers, prevalent in plastics, is difficult due to strong C-C bonds.
• Existing methods for polymer degradation produce complex mixtures of oligomers.

Purpose of the Study:

• To introduce a novel strategy for creating degradable carbon-backbone polymers.
• To utilize aromatization as a driving force for C-C bond cleavage in acrylic polymers.

Main Methods:

• Developed an efficient, living, alternating addition copolymerization of acrylates and coumarin.
• Employed a frustrated Lewis pair cooperative catalyst for the polymerization.
• Investigated degradation under strong base conditions at room temperature.

Main Results:

• Synthesized strong, transparent acrylic copolymers with properties comparable or superior to poly(methyl methacrylate).
• Demonstrated complete degradation of copolymers at room temperature via C-C bond cleavage.
• Confirmed degradation yields pure, pharmaceutically valuable molecules.

Conclusions:

• Aromatization-driven C-C bond cleavage is a viable strategy for designing degradable carbon-backbone polymers.
• The developed acrylic polymers are durable, robust, and fully degradable.
• This approach offers a pathway to sustainable plastics yielding valuable chemical products.