{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T15:42:25Z","timestamp":1792683745955,"version":"4.5.0"},"reference-count":54,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,9,7]],"date-time":"2026-09-07T00:00:00Z","timestamp":1788739200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,9,7]],"date-time":"2026-09-07T00:00:00Z","timestamp":1788739200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Angew Chem Int Ed"],"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>Photoreduction of metal ions plays a central role in the recovery of precious metals from electronic waste, yet its design is still largely governed by a semiconductor paradigm that links extended \u03c0\u2010conjugation and long\u2010range charge transport to superior performance. Herein, we challenge this assumption by demonstrating that deliberate disruption of \u03c0\u2010continuity via \u03c3\u2010linkers in covalent organic frameworks (COFs) affords a more effective electronic architecture for localized redox reactions. The resulting \u03c0\u2010disrupted framework (\u03c3\u2010COF) generates low\u2010energy, spatially confined electronic states that prolong photogenerated electron lifetimes and promote their transfer to adsorbed Au(III) species. Under illumination, \u03c3\u2010COF exhibits a dramatic enhancement in gold uptake from electronic\u2010waste\u2010derived solutions, increasing from \u223c1000 to 3045\u00a0mg\/g, whereas a structurally analogous \u03c0\u2010conjugated framework (\u03c0\u2010COF) shows only a modest increase (from \u223c1200 to 1700\u00a0mg\/g). Spectroscopic and photoelectrochemical studies reveal efficient electron accumulation at redox\u2010active sites without reliance on extended \u03c0\u2010delocalization, with adsorption and reduction occurring within the same local domains. This work establishes controlled \u03c0\u2010disruption as a new electronic design principle for COF photoreductants in noble metal recovery.<\/jats:p>","DOI":"10.1002\/anie.1583116","type":"journal-article","created":{"date-parts":[[2026,9,7]],"date-time":"2026-09-07T13:12:12Z","timestamp":1788786732000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Breaking of \u03c0\u2010Continuity by \u03c3\u2010Linkers in Covalent Organic Frameworks for Efficient Photoreduction and Recovery of Gold From Electronic Waste"],"prefix":"10.1002","author":[{"given":"Yutong","family":"Wang","sequence":"first","affiliation":[{"name":"Collaborative Innovation Center of Henan Province For Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions School of Chemistry and Chemical Engineering Ministry of Education Henan Normal University  Xinxiang Henan P.R. 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