{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360580238099786368.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1002/chem.201905345"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fchem.201905345"}},{"identifier":{"@type":"URI","@value":"https://onlinelibrary.wiley.com/doi/pdf/10.1002/chem.201905345"}},{"identifier":{"@type":"URI","@value":"https://onlinelibrary.wiley.com/doi/full-xml/10.1002/chem.201905345"}},{"identifier":{"@type":"URI","@value":"https://chemistry-europe.onlinelibrary.wiley.com/doi/am-pdf/10.1002/chem.201905345"}},{"identifier":{"@type":"URI","@value":"https://chemistry-europe.onlinelibrary.wiley.com/doi/pdf/10.1002/chem.201905345"}},{"identifier":{"@type":"PMID","@value":"32009257"}}],"dc:title":[{"@value":"Enhanced Operational Durability of Thermally Activated Delayed Fluorescence‐Based Organic Light‐Emitting Diodes with a Triazine Electron Transporter"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Abstract</jats:title><jats:p>In organic light‐emitting diodes (OLEDs) based on materials that show thermally activated delayed fluorescence (TADF), the internal quantum efficiency of 100 % can be obtained without using phosphorescence‐based organometallics that contain rare metals. Therefore, with TADF‐based emitters, it is possible to fabricate high‐performing OLEDs at a lower cost. However, compared with fluorescence‐ and phosphorescence‐based OLEDs, an understanding of degradation mechanisms in TADF‐based OLEDs is still insufficient for future commercialization. In particular, it is widely recognized that the development of electron transport materials is crucial for improving OLED characteristics, especially driving voltages and operational durability. In this study, it was demonstrated that the operational durability of TADF‐based OLEDs was greatly improved by introducing a triazine‐based material of 2,4,6‐tris(1,1′‐biphenyl‐4‐yl)‐[1,3,5]triazine (pT2T) as a hole‐blocking layer (HBL) compared with a conventional HBL material of 2,4,6‐tris(biphenyl‐3‐yl)‐[1,3,5]triazine (T2T). Several experiments were carried out to make the reasons of the improved durability clearer, and attributed the improved durability to the shift of a carrier recombination zone from the emitting layer/HBL interface and the suppressed formation of excited‐state quenchers in the pT2T HBL, because of the higher electron mobility of pT2T and the better stability of its radical anion state.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380580238099786369","@type":"Researcher","foaf:name":[{"@value":"Kenta Yamaguchi"}],"jpcoar:affiliationName":[{"@value":"Center for Organic Photonics and Electronics Research (OPERA) Kyushu University  744 Motooka Nishi Fukuoka 819-0395 Japan"},{"@value":"Japan Science and Technology Agency (JST) ERATO Adachi Molecular Exciton Engineering Project Kyushu University  744 Motooka Nishi Fukuoka 819-0395 Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380580238099786368","@type":"Researcher","foaf:name":[{"@value":"Toshinori Matsushima"}],"jpcoar:affiliationName":[{"@value":"Center for Organic Photonics and Electronics Research (OPERA) Kyushu University  744 Motooka Nishi Fukuoka 819-0395 Japan"},{"@value":"Japan Science and Technology Agency (JST) ERATO Adachi Molecular Exciton Engineering Project Kyushu University  744 Motooka Nishi Fukuoka 819-0395 Japan"},{"@value":"International Institute for Carbon-Neutral Energy Research (WPI-I<sup>2</sup>CNER) Kyushu University  744 Motooka Nishi Fukuoka 819-0395 Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380580238099786372","@type":"Researcher","foaf:name":[{"@value":"Atula S. D. Sandanayaka"}],"jpcoar:affiliationName":[{"@value":"Center for Organic Photonics and Electronics Research (OPERA) Kyushu University  744 Motooka Nishi Fukuoka 819-0395 Japan"},{"@value":"Japan Science and Technology Agency (JST) ERATO Adachi Molecular Exciton Engineering Project Kyushu University  744 Motooka Nishi Fukuoka 819-0395 Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380580238099786371","@type":"Researcher","foaf:name":[{"@value":"Yoko Homma"}],"jpcoar:affiliationName":[{"@value":"Tokyo Research Center Organic Materials Research Laboratory Tosoh Corporation  2743-1, Hayakawa Ayase Kanagawa 252-1123 Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380580238099786373","@type":"Researcher","foaf:name":[{"@value":"Naoki Uchida"}],"jpcoar:affiliationName":[{"@value":"Tokyo Research Center Organic Materials Research Laboratory Tosoh Corporation  2743-1, Hayakawa Ayase Kanagawa 252-1123 Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380580238099786370","@type":"Researcher","foaf:name":[{"@value":"Chihaya Adachi"}],"jpcoar:affiliationName":[{"@value":"Center for Organic Photonics and Electronics Research (OPERA) Kyushu University  744 Motooka Nishi Fukuoka 819-0395 Japan"},{"@value":"Japan Science and Technology Agency (JST) ERATO Adachi Molecular Exciton Engineering Project Kyushu University  744 Motooka Nishi Fukuoka 819-0395 Japan"},{"@value":"International Institute for Carbon-Neutral Energy Research (WPI-I<sup>2</sup>CNER) Kyushu University  744 Motooka Nishi Fukuoka 819-0395 Japan"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"09476539"},{"@type":"EISSN","@value":"15213765"}],"prism:publicationName":[{"@value":"Chemistry – A European Journal"}],"dc:publisher":[{"@value":"Wiley"}],"prism:publicationDate":"2020-04-15","prism:volume":"26","prism:number":"25","prism:startingPage":"5598","prism:endingPage":"5602"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#am","http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fchem.201905345"},{"@id":"https://onlinelibrary.wiley.com/doi/pdf/10.1002/chem.201905345"},{"@id":"https://onlinelibrary.wiley.com/doi/full-xml/10.1002/chem.201905345"},{"@id":"https://chemistry-europe.onlinelibrary.wiley.com/doi/am-pdf/10.1002/chem.201905345"},{"@id":"https://chemistry-europe.onlinelibrary.wiley.com/doi/pdf/10.1002/chem.201905345"}],"createdAt":"2020-02-03","modifiedAt":"2025-10-12","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360298754827595264","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Tetrapyridine/triphenyltriazine-conjugated electron transporters for low-power-consumption, high-stability phosphorescent OLEDs"}]},{"@id":"https://cir.nii.ac.jp/crid/1360865814753323392","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Co-trimerization of benzonitriles with guanidine hydrochloride: synthesis of 2-bromo-4,6-diaryl-1,3,5-triazine derivatives bearing electron-withdrawing groups"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1002/chem.201905345"},{"@type":"OPENAIRE","@value":"doi_dedup___::c0b192526934be3e91e0b737266ba8f6"},{"@type":"CROSSREF","@value":"10.1039/d2tc04647d_references_DOI_MfkB5NZaLNy3SKnMWAI3ur72LCr"},{"@type":"CROSSREF","@value":"10.1093/chemle/upae059_references_DOI_MfkB5NZaLNy3SKnMWAI3ur72LCr"}]}