Selective Electrocatalytic Degradation of Ether-Containing Polymers

Jesse H. Hsu, Tyler E. Ball, Sewon Oh, Erin E. Stache, Brett P. Fors

Research output: Contribution to journalArticlepeer-review

Abstract

Leveraging electrochemistry to degrade robust polymeric materials has the potential to impact society's growing issue of plastic waste. Herein, we develop an electrocatalytic oxidative degradation of polyethers and poly(vinyl ethers) via electrochemically mediated hydrogen atom transfer (HAT) followed by oxidative polymer degradation promoted by molecular oxygen. We investigated the selectivity and efficiency of this method, finding our conditions to be highly selective for polymers with hydridic, electron-rich C−H bonds. We leveraged this reactivity to degrade polyethers and poly(vinyl ethers) in the presence of polymethacrylates and polyacrylates with complete selectivity. Furthermore, this method made polyacrylates degradable by incorporation of ether units into the polymer backbone. We quantified degradation products, identifying up to 36 mol % of defined oxidation products, including acetic acid, formic acid, and acetaldehyde, and we extended this method to degrade a polyether-based polyurethane in a green solvent. This work demonstrates a facile, electrochemically-driven route to degrade polymers containing ether functionalities.

Original languageEnglish (US)
Article numbere202316578
JournalAngewandte Chemie - International Edition
Volume63
Issue number3
DOIs
StatePublished - Jan 15 2024

All Science Journal Classification (ASJC) codes

  • Catalysis
  • General Chemistry

Keywords

  • C−H Activation
  • Degradation
  • Electrochemistry
  • Oxidation
  • Polymers

Fingerprint

Dive into the research topics of 'Selective Electrocatalytic Degradation of Ether-Containing Polymers'. Together they form a unique fingerprint.

Cite this