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The distinct amino pattern (morpholino\n                    <jats:bold>1<\/jats:bold>\n                    \u00a0versus diaryl moiety\n                    <jats:bold>2<\/jats:bold>\n                    ) followed an oxidative photoinduced electron transfer (\n                    <jats:bold>PET<\/jats:bold>\n                    ) mechanism with the iodonium salt\n                    <jats:bold>C1<\/jats:bold>\n                    and the sulfonium cation\n                    <jats:bold>C2<\/jats:bold>\n                    .\n                    <jats:bold>2<\/jats:bold>\n                    performed well under air upon UV\u2010LED exposure at 395\u00a0nm. The\n                    <jats:bold>TK<\/jats:bold>\n                    s mostly reacted from the triplet state (T\n                    <jats:sub>1<\/jats:sub>\n                    ) with either\n                    <jats:bold>C1<\/jats:bold>\n                    or\n                    <jats:bold>C2<\/jats:bold>\n                    resulting in a cation radical with certain instability. This changes considering the radical anion studied by spectroelectrochemistry confirmed by reversibility. Electrochemical measurements and transient absorption experiments disfavor from a thermodynamic point of view a reductive mechanism of the T\n                    <jats:sub>1<\/jats:sub>\n                    with\n                    <jats:bold>C3<\/jats:bold>\n                    . Long\u2010lived charge separated states discuss a new paradigm as a further alternative to form reactive intermediates even with\n                    <jats:bold>C3<\/jats:bold>\n                    .\n                    <jats:sup>1<\/jats:sup>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    generation by\n                    <jats:sup>3<\/jats:sup>\n                    <jats:bold>TK<\/jats:bold>\n                    * operated as additional pathway to form the initiating \u223cN\u2500CH\n                    <jats:sub>2<\/jats:sub>\n                    \u2022 radical of\n                    <jats:bold>C3<\/jats:bold>\n                    . The higher efficiency of photoinduced electron transfer (\n                    <jats:bold>PET<\/jats:bold>\n                    ) with\n                    <jats:bold>C1<\/jats:bold>\n                    explained the higher network density of the crosslinked material. The subsequent [4+2] cycloaddition of\n                    <jats:sup>1<\/jats:sup>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    to the thiophene moiety led to a mass increase of 32\n                    <jats:italic>\n                      m\n                      <jats:sub>z<\/jats:sub>\n                    <\/jats:italic>\n                    of either\n                    <jats:bold>1<\/jats:bold>\n                    or\n                    <jats:bold>2<\/jats:bold>\n                    , which led to depletion of inhibiting\n                    <jats:sup>3<\/jats:sup>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    . This additionally explains the unexpected, good oxygen tolerance. Furthermore,\n                    <jats:bold>TK 2a<\/jats:bold>\n                    showed no significant cytotoxic response explaining its future potential for biocompatible applications.\n                  <\/jats:p>","DOI":"10.1002\/anie.202518608","type":"journal-article","created":{"date-parts":[[2025,12,16]],"date-time":"2025-12-16T09:55:45Z","timestamp":1765878945000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Bis(2\u2010amino\u20105\u2010thienyl)Ketone as Oxygen Tolerant Sensitizer for Conventional Radical Photopolymerization"],"prefix":"10.1002","volume":"65","author":[{"given":"Taner","family":"Poplata","sequence":"first","affiliation":[{"name":"Institute for Coatings and Surface Chemistry Department of Chemistry Niederrhein University of Applied Sciences  Adlerstr. 1 47798 Krefeld 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