{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,24]],"date-time":"2026-10-24T03:46:55Z","timestamp":1792813615206,"version":"4.5.0"},"reference-count":44,"publisher":"Wiley","issue":"44","license":[{"start":{"date-parts":[[2025,8,19]],"date-time":"2025-08-19T00:00:00Z","timestamp":1755561600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"publisher","award":["RS\u20102024\u201000442755"],"award-info":[{"award-number":["RS\u20102024\u201000442755"]}],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003052","name":"Ministry of Trade, Industry and Energy","doi-asserted-by":"publisher","award":["20018956"],"award-info":[{"award-number":["20018956"]}],"id":[{"id":"10.13039\/501100003052","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["advanced.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Advanced Materials"],"published-print":{"date-parts":[[2025,11]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Blue phosphorescent organic light\u2013emitting diodes (PhOLEDs) face challenges in achieving high efficiency, color purity, and long device lifetime due to exciton quenching and high energy requirements. In this study, two tetradentate Pt(II) complexes,\n                    <jats:bold>Pt\u2010impy<\/jats:bold>\n                    and\n                    <jats:bold>Pt\u2010Me\u2010impy<\/jats:bold>\n                    , are designed and synthesized by incorporating pyridocarbene in their ligands. Pyridocarbene enhances the electrochemical stability, strengthens triplet metal\u2010to\u2010ligand charge transfer characteristics, and improves the spin\u2013orbit coupling, effectively shortening the exciton lifetime and minimizing the quenching effects. Additionally, the introduction of a methyl group as a conformation manager in\n                    <jats:bold>Pt\u2010Me\u2010impy<\/jats:bold>\n                    further improves the color purity by blue\u2010shifting and narrowing the emission spectrum. As a result,\n                    <jats:bold>Pt\u2010impy<\/jats:bold>\n                    and\n                    <jats:bold>Pt\u2010Me\u2010impy<\/jats:bold>\n                    exhibit external quantum efficiencies of 24.5% and 27.4% at the 3\u00a0wt.% doping concentration, respectively. In particular,\n                    <jats:bold>Pt\u2010impy<\/jats:bold>\n                    and\n                    <jats:bold>Pt\u2010Me\u2010impy<\/jats:bold>\n                    doped blue PhOLEDs optimized for stability demonstrate a device lifetime of up to 95% of the initial luminance of 543 and 228\u00a0h at 1,000\u00a0cd\u00a0m\n                    <jats:sup>\u22122<\/jats:sup>\n                    , which has never been achieved in the blue PhOLEDs. This study demonstrates that the synergistic combination of pyridocarbene and the methyl conformation manager is an effective strategy for improving blue PhOLED performance, enhancing their potential for practical applications.\n                  <\/jats:p>","DOI":"10.1002\/adma.202510070","type":"journal-article","created":{"date-parts":[[2025,8,19]],"date-time":"2025-08-19T12:13:41Z","timestamp":1755605621000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":22,"title":["Pyridocarbene\u2010Based Tetradentate Pt(II) Complexes for Long Device Lifetime over 500 h in Blue Phosphorescent Organic Light\u2013Emitting Diodes"],"prefix":"10.1002","volume":"37","author":[{"given":"Kiun","family":"Cheong","sequence":"first","affiliation":[{"name":"School of Chemical Engineering Sungkyunkwan University  2066, Seobu\u2010ro, Jangan\u2010gu Suwon\u2010si Gyeonggi 16419 Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hyunjung","family":"Lee","sequence":"additional","affiliation":[{"name":"School of Chemical Engineering Sungkyunkwan University  2066, Seobu\u2010ro, Jangan\u2010gu Suwon\u2010si Gyeonggi 16419 Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jangho","family":"Moon","sequence":"additional","affiliation":[{"name":"Department of Display Convergence Engineering Sungkyunkwan University  2066, Seobu\u2010ro, Jangan\u2010gu Suwon Gyeonggi 16419 Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chan Hee","family":"Ryu","sequence":"additional","affiliation":[{"name":"Department of Chemistry Institute for Molecular Science and Fusion Technology Kangwon National University  Chuncheon Gangwon 24341 Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gyeong Woo","family":"Kim","sequence":"additional","affiliation":[{"name":"LG Display Co. Ltd.  LG Science Park, 30, Magokjungang 10\u2010ro, Gangseo\u2010gu Seoul 07796 Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jun Yun","family":"Kim","sequence":"additional","affiliation":[{"name":"LG Display Co. Ltd.  LG Science Park, 30, Magokjungang 10\u2010ro, Gangseo\u2010gu Seoul 07796 Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"In\u2010Ho","family":"Lee","sequence":"additional","affiliation":[{"name":"P&amp;H Tech 16\u201325, Dongbaekjungang\u2010ro 16beon\u2010gil, Giheung\u2010gu Yongin\u2010si Gyeonggi 17015 Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yong\u2010Woo","family":"Kim","sequence":"additional","affiliation":[{"name":"LT Materials  113\u201319, Dangha\u2010ro, Namsa\u2010eup, Cheoin\u2010gu Yongin\u2010si Gyeonggi 17118 Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Young Woong","family":"Lee","sequence":"additional","affiliation":[{"name":"LT Materials  113\u201319, Dangha\u2010ro, Namsa\u2010eup, Cheoin\u2010gu Yongin\u2010si Gyeonggi 17118 Republic of 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