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Upon visible laser irradiation, these initially colorless photo\u2010 and thermochromic compounds undergo a reversible ring\u2010opening reaction to generate colored benzophenone derivatives, which, in the presence of a co\u2010initiator, efficiently trigger localized radical polymerization of a tetraacrylate monomer. This approach allows the rapid and precise fabrication of thin solid objects with well\u2010defined geometries using visible light. \u00a9 2026 The Author(s).\n                    <jats:italic>Polymer International<\/jats:italic>\n                    published by John Wiley &amp; Sons Ltd on behalf of Society of Chemical Industry.\n                  <\/jats:p>","DOI":"10.1002\/pi.70098","type":"journal-article","created":{"date-parts":[[2026,3,8]],"date-time":"2026-03-08T21:36:31Z","timestamp":1773005791000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Photochromic carbazole photoinitiators for precision visible\u2010light photopolymerization"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-4573-3818","authenticated-orcid":false,"given":"Mauro","family":"Magalh\u00e3es","sequence":"first","affiliation":[{"name":"Centro de Qu\u00edmica \u2013 Vila Real Universidade de 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