{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T08:06:25Z","timestamp":1789373185833,"version":"build-2803163510"},"reference-count":55,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T00:00:00Z","timestamp":1789344000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T00:00:00Z","timestamp":1789344000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["W2521009"],"award-info":[{"award-number":["W2521009"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["22371206"],"award-info":[{"award-number":["22371206"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Angew Chem Int Ed"],"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    The synthesis of triplet\u2010ground\u2010state 1,14:11,12\u2010dibenzopentacene (DP) has been sought after for over 60 years, but the isolation of stable derivatives in crystalline form has been unsuccessful. Herein, we report the synthesis and first single\u2010crystal isolation of a stable DP derivative via a protection\u2013oxidation\u2013protection (POP) strategy. X\u2010ray diffraction analysis reveals a twisted helical geometry, while variable\u2010temperature electron paramagnetic resonance (EPR) and magnetic susceptibility measurements confirm its triplet ground state. Pulsed\u2010EPR spectroscopy yields long spin\u2010lattice (\n                    <jats:italic>T<\/jats:italic>\n                    <jats:sub>1<\/jats:sub>\n                    ) and spin\u2010spin (\n                    <jats:italic>T<\/jats:italic>\n                    <jats:sub>m<\/jats:sub>\n                    ) relaxation times of 3.58\u00a0ms and 0.49 \u00b5s at 70 K, respectively. Furthermore, electrochemical investigations unveil a unique four\u2010stage redox profile. This work demonstrates that the POP strategy can provide synthetic access to triplet\u2010ground\u2010state DP diradical.\n                  <\/jats:p>","DOI":"10.1002\/anie.3990758","type":"journal-article","created":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T07:15:07Z","timestamp":1789370107000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Synthesis of a Stable Crystalline Dibenzopentacene Triplet Diradical via a Protection\u2013Oxidation\u2013Protection Strategy"],"prefix":"10.1002","author":[{"given":"Yuexin","family":"Liu","sequence":"first","affiliation":[{"name":"Department of Chemistry Institute of Molecular Plus Tianjin University and Haihe Laboratory of Sustainable Chemical Transformations  Tianjin P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-2929-5132","authenticated-orcid":false,"given":"Zihan","family":"Yan","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering Nankai University  Tianjin China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-8655-7333","authenticated-orcid":false,"given":"Weiwei","family":"Niu","sequence":"additional","affiliation":[{"name":"Center of Single\u2010Molecule Sciences College of Electronic Information and Optical Engineering Nankai University  Tianjin P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7135-547X","authenticated-orcid":false,"given":"Daisuke","family":"Shiomi","sequence":"additional","affiliation":[{"name":"Department of Chemistry Graduate School of Science Osaka Metropolitan University  Sumiyoshi\u2010ku Osaka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1274-7470","authenticated-orcid":false,"given":"Kazunobu","family":"Sato","sequence":"additional","affiliation":[{"name":"Department of Chemistry Graduate School of Science Osaka Metropolitan University  Sumiyoshi\u2010ku Osaka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0952-9862","authenticated-orcid":false,"given":"Zhao\u2010Yang","family":"Li","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering Nankai University  Tianjin China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7387-023X","authenticated-orcid":false,"given":"Guangwu","family":"Li","sequence":"additional","affiliation":[{"name":"Center of Single\u2010Molecule Sciences College of Electronic Information and Optical Engineering Nankai University  Tianjin P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6194-4054","authenticated-orcid":false,"given":"Zhe","family":"Sun","sequence":"additional","affiliation":[{"name":"Department of Chemistry Institute of Molecular Plus Tianjin University and Haihe Laboratory of Sustainable Chemical Transformations  Tianjin P. R. China"},{"name":"State Key Laboratory of Molecular Engineering of Polymers Fudan University  Shanghai P. R. 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