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However, it remains rare for COPs capable of effectively harvesting long\u2010wavelength visible to near\u2010infrared (L\u2010Vis\u2010NIR) light (\n                    <jats:italic>\u03bb<\/jats:italic>\n                    \u00a0&gt;\u00a0600\u00a0nm) to achieve these photochemical transformations. Here, two isomeric mesoporous Al\u2010Salen COP fibers are demonstrated as L\u2010Vis\u2010NIR\u2010responsive photocatalysts for efficient Griffith\u2010type oxygen activation to produce hydrogen peroxide (H\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    ). Both COPs achieve a high H\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    production rate of about 1607\u00a0\u00b5mol g\n                    <jats:sub>cat<\/jats:sub>\n                    <jats:sup>\u22121<\/jats:sup>\n                    \u00a0h\n                    <jats:sup>\u22121<\/jats:sup>\n                    under irradiation of common domestic LED lights (680\u2013690\u00a0nm, 3.18\u00a0mW\u00a0cm\n                    <jats:sup>\u22122<\/jats:sup>\n                    ) using 1,2,3,4\u2010tetrahydroisoquinoline as a sacrificial reagent with a high solar to chemical efficiency of about 5.0%. Their efficient L\u2010Vis\u2010NIR\u2010responsive photocatalytic performance is attributed to their narrow band gaps of about 1.5\u00a0eV, efficient charge separation facilitated by integrated electron\u2010donor (benzene ring) and electron\u2010acceptor (Al\u2010Salen Lewis acid site) structures, and a direct Griffith\u2010type photo\u2010activation mechanism for oxygen. No significant isomerism effect is observed in their photocatalytic performance, attributed to the similar photoinduced charge carrier behaviors mainly affected by the local Al\u2010Salen moieties rather than the topological structure. This study highlights isomeric Al\u2010based COPs as effective platforms for L\u2010Vis\u2010NIR photocatalysis and opens avenues for the development of Al\u2010based COP photocatalysts for diverse chemical transformations.\n                  <\/jats:p>","DOI":"10.1002\/anie.7982319","type":"journal-article","created":{"date-parts":[[2026,3,8]],"date-time":"2026-03-08T08:18:23Z","timestamp":1772957903000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Long\u2010Wavelength Visible Griffith\u2010Type Oxygen Photoactivation on Isomeric Mesoporous Al\u2010Salen Covalent Organic Polymer Fibers"],"prefix":"10.1002","volume":"65","author":[{"given":"Yue","family":"Chen","sequence":"first","affiliation":[{"name":"School of Chemistry and Molecular Engineering East China Normal University  Shanghai P. R. 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China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1854-8659","authenticated-orcid":false,"given":"Qichun","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering City University of Hong Kong  Hong Kong SAR P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rui","family":"Liu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education School of Materials Science and Engineering Tongji University  Shanghai P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4829-9454","authenticated-orcid":false,"given":"Aiguo","family":"Kong","sequence":"additional","affiliation":[{"name":"School of Chemistry and Molecular Engineering East China Normal University  Shanghai P. R. 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