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Here we demonstrate a solvent\u2010induced alkaline self\u2010replenishing strategy that enables efficient recycling of diverse ester\u2010containing plastics, including thermosets (e.g., unsaturated polyester resin, epoxy resin, vinyl ester resin) and thermoplastics (e.g., PET, PBAT) under remarkably mild conditions. By exploiting the temperature\u2010dependent solubility of KOH in 1,3\u2010dimethyl\u20102\u2010imidazolidinone (DMI), we established a dynamic alkaline balance: low solubility at room temperature confines it largely to the solid phase, whereas heating promotes dissolution that replenishes consumed base and prevents kinetic stagnation. Characterization evidence reveals that DMI acts as a molecular co\u2010activator, forming supramolecular complexes with K\n                    <jats:sup>+<\/jats:sup>\n                    to enhance OH\n                    <jats:sup>\u2212<\/jats:sup>\n                    nucleophilicity and polarize ester bonds simultaneously. This system allows for the easy recovery of KOH via auto\u2010precipitation upon cooling, ensuring excellent reusability. Our work offers a universal and cost\u2010efficient dynamic methodological framework for the sustainable recycling of diverse polymer architectures.\n                  <\/jats:p>","DOI":"10.1002\/anie.9300642","type":"journal-article","created":{"date-parts":[[2026,5,26]],"date-time":"2026-05-26T16:26:02Z","timestamp":1779812762000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Synergistic Supramolecular Activation and Dynamic Alkalinity Replenishing for Sustainable Recycling of Ester\u2010Containing Plastics"],"prefix":"10.1002","volume":"65","author":[{"given":"Jun\u2010Yan","family":"Li","sequence":"first","affiliation":[{"name":"Collaborative Innovation Center for Eco\u2010Friendly and Fire\u2010Safety Polymeric Materials (MoE) National Key Laboratory of Advanced Polymer Materials Engineering National Engineering Laboratory of Eco\u2010Friendly Polymeric Materials (Sichuan) College of Chemistry Sichuan 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