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Rapid Commun."],"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Photo\u2010ATRP commonly relies on petrochemical\u2010derived ligands and copper\u2010based catalytic systems, which is misaligned with green\u2010chemistry principles. Here, 4\u2010hydroxychalcone is used as a building block and functionalized amino groups through a Mannich reaction, then self\u2010assembled with FeBr\n                    <jats:sub>3<\/jats:sub>\n                    to form a metal\u2010polyphenol network (MPN). Under 420\u00a0nm visible\u2010light irradiation, the MPN effectively mediates photo\u2010ATRP, reaching a maximum monomer conversion of 67.4%. The resulting polymers exhibit a dispersity of\n                    <jats:italic>\u0110<\/jats:italic>\n                    &lt; 1.5, with values down to 1.3, indicating a certain control of polymerization. Using the\n                    <jats:bold>PMMA<\/jats:bold>\n                    \u2010Br macroinitiator, synthesis of block copolymers comprising methyl methacrylate (\n                    <jats:bold>MMA<\/jats:bold>\n                    ), benzyl methacrylate (\n                    <jats:bold>BMA<\/jats:bold>\n                    ), and styrene (\n                    <jats:bold>St<\/jats:bold>\n                    ) successfully succeeded. Notably, polymers exhibiting a dispersity of\n                    <jats:italic>\u0110<\/jats:italic>\n                    &lt; 1.5 were obtained even without degassing, while chain\u2010end fidelity was available. In addition, a FeCl\n                    <jats:sub>3<\/jats:sub>\n                    \u2010catalyzed photo\u2010ATRP system is demonstrated. Overall, this work provides an operationally simple approach to light\u2010controlled radical polymerization using Fe catalysts with bio\u2010based ligands.\n                  <\/jats:p>","DOI":"10.1002\/marc.70443","type":"journal-article","created":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T06:30:19Z","timestamp":1790577019000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Metal Polyphenol Network Enables Photo\u2010ATRP Under Blue Light"],"prefix":"10.1002","author":[{"given":"Yongkang","family":"Pang","sequence":"first","affiliation":[{"name":"College of Chemistry Chemical Engineering and Resource Utilization Northeast Forestry University  Harbin China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Min","family":"Wang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Bio\u2010based Material Science &amp; Technology Northeast Forestry University Ministry of Education  Harbin China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sarah","family":"Fasbender","sequence":"additional","affiliation":[{"name":"Department of Chemistry Institute for Coatings and Surface Chemistry and Center of Analytical Research Niederrhein University of Applied Sciences  Krefeld Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7709-2869","authenticated-orcid":false,"given":"Martin","family":"J\u00e4ger","sequence":"additional","affiliation":[{"name":"Department of Chemistry Institute for Coatings and Surface Chemistry and Center of Analytical Research Niederrhein University of Applied Sciences  Krefeld Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7830-5013","authenticated-orcid":false,"given":"Bernd","family":"Strehmel","sequence":"additional","affiliation":[{"name":"Department of Chemistry Institute for Coatings and Surface Chemistry 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