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Rapid Commun."],"published-print":{"date-parts":[[2026,1]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>NIR\u2010mediated ATRP is used for the synthesis of polymethacrylates from the bio\u2010based monomers 4\u2010(4\u2010methacryloyloxyphenyl)butan\u20102\u2010one and methyl 9\u2010hydroxy\u201010\u2010(methacryloyloxy) octadecanoate \/ methyl 9\u2010(methacryloyloxy)\u201010\u2010hydroxy octadecanoate. According to the NIR\u2010mediated ATRP protocol, excitation is carried out at 790\u00a0nm in the presence of copper(II)bromide tris(2\u2010pyridylmethyl)amine complex as deactivator and a heptamethine cyanine comprising a barbiturate group in the meso\u2010position operating as sensitizer. The homopolymers obtained are compared with similarly made poly(methyl methacrylate) regarding yield, molecular weight, dispersity, and glass transition temperature. Furthermore, block copolymers made from methyl methacrylate and the bio\u2010based monomers are included in this comparison. Dispersity is broader in the case of the bio\u2010based polymethacrylates compared to poly(methyl methacrylate), indicating a higher contribution of chain termination during NIR\u2010mediated ATRP using the bio\u2010based methacrylates. Notably, all macroinitiators are chain extendable. In addition, the block copolymers synthesized from the bio\u2010based methacrylates significantly differ regarding their solubility, that is caused by the distinct structural features in the ester part of these monomers. Results obtained from GPC investigation of tetrahydrofuran soluble copolymers are included in the discussion. These results show that the initiation efficiency is lower for the methyl 9\u2010hydroxy\u201010\u2010(methacryloyloxy) octadecanoate \/ methyl 9\u2010(methacryloyloxy)\u201010\u2010hydroxy octadecanoate isomer mixture compared to methyl methacrylate.<\/jats:p>","DOI":"10.1002\/marc.202500718","type":"journal-article","created":{"date-parts":[[2025,11,9]],"date-time":"2025-11-09T18:44:46Z","timestamp":1762713886000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Synthesis of Polymers From Bio\u2010Based Methacrylates Comprising Aromatic or Aliphatic Structures Using NIR\u2010Mediated ATRP"],"prefix":"10.1002","volume":"47","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7700-1878","authenticated-orcid":false,"given":"Nicolai","family":"Meckbach","sequence":"first","affiliation":[{"name":"Institute for Coatings and Surface Chemistry Faculty of Chemistry Niederrhein University of Applied Sciences  Krefeld 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