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Jinhoon, Jeong
분자활성 촉매반응 연구단
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Protecting Benzylic C-H Bonds by Deuteration Doubles the Operational Lifetime of Deep-Blue Ir-Phenylimidazole Dopants in Phosphorescent OLEDs

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dc.contributor.authorBae, Hye Jin-
dc.contributor.authorKim, Jong Soo-
dc.contributor.authorYakubovich, Alexander-
dc.contributor.authorJinhoon Jeong-
dc.contributor.authorPark, Sangho-
dc.contributor.authorChwae, Jun-
dc.contributor.authorIshibe, Satoko-
dc.contributor.authorJung, Yongsik-
dc.contributor.authorRai, Virendra Kumar-
dc.contributor.authorSon, Won-Joon-
dc.contributor.authorKim, Sunghan-
dc.contributor.authorChoi, Hyeonho-
dc.contributor.authorMu-Hyun Baik-
dc.date.accessioned2021-08-27T05:50:01Z-
dc.date.accessioned2021-08-27T05:50:01Z-
dc.date.available2021-08-27T05:50:01Z-
dc.date.available2021-08-27T05:50:01Z-
dc.date.created2021-05-26-
dc.date.issued2021-08-
dc.identifier.issn2195-1071-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/10164-
dc.description.abstractMuch effort has been dedicated to increase the operational lifetime of blue phosphorescent materials in organic light-emitting diodes (OLEDs), but the reported device lifetimes are still too short for the industrial applications. An attractive method for increasing the lifetime of a given emitter without making any chemical change is exploiting the kinetic isotope effect, where key C-H bonds are deuterated. A computer model identifies that the most vulnerable molecular site in an Ir-phenylimidazole dopant is the benzylic C-H bond and predicts that deuteration may hamper the deactivation pathway involving C-H/D bond cleavage notably. Experiments show that the device lifetime until the initial luminance diminishes to 70% (LT70) of a prototype phosphorescent OLED device can be doubled to 355 hours with a maximum external quantum efficiency of 25.1% at 1000 cd m(-2). This is one of the best operational performances of blue phosphorescent OLEDs observed to date in a single stacked cell.-
dc.language영어-
dc.publisherWILEY-V C H VERLAG GMBH-
dc.titleProtecting Benzylic C-H Bonds by Deuteration Doubles the Operational Lifetime of Deep-Blue Ir-Phenylimidazole Dopants in Phosphorescent OLEDs-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000651649500001-
dc.identifier.scopusid2-s2.0-85105974429-
dc.identifier.rimsid75634-
dc.contributor.affiliatedAuthorJinhoon Jeong-
dc.contributor.affiliatedAuthorMu-Hyun Baik-
dc.identifier.doi10.1002/adom.202100630-
dc.identifier.bibliographicCitationADVANCED OPTICAL MATERIALS, v.9, no.16-
dc.relation.isPartOfADVANCED OPTICAL MATERIALS-
dc.citation.titleADVANCED OPTICAL MATERIALS-
dc.citation.volume9-
dc.citation.number16-
dc.type.docTypeArticle-
dc.description.journalClass1-
dc.description.journalClass1-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.relation.journalResearchAreaMaterials Science-
dc.relation.journalResearchAreaOptics-
dc.relation.journalWebOfScienceCategoryMaterials Science, Multidisciplinary-
dc.relation.journalWebOfScienceCategoryOptics-
dc.subject.keywordPlusLIGHT-EMITTING DEVICES-
dc.subject.keywordPlusCYCLOMETALATED IRIDIUM COMPLEXES-
dc.subject.keywordPlusEXTERNAL QUANTUM EFFICIENCY-
dc.subject.keywordPlusSOLVATION FREE-ENERGIES-
dc.subject.keywordPlusSKY-BLUE-
dc.subject.keywordPlusDEGRADATION MECHANISMS-
dc.subject.keywordPlusCHEMICAL DEGRADATION-
dc.subject.keywordPlusROLL-OFF-
dc.subject.keywordPlusMOLECULAR CALCULATIONS-
dc.subject.keywordPlusIR(III) COMPLEXES-
dc.subject.keywordAuthorblue OLEDs-
dc.subject.keywordAuthorDFT calculations-
dc.subject.keywordAuthorhomoleptic Ir(III) complex-
dc.subject.keywordAuthorkinetic isotope effect-
dc.subject.keywordAuthoroperational lifetime-
Appears in Collections:
Center for Catalytic Hydrocarbon Functionalizations(분자활성 촉매반응 연구단) > 1. Journal Papers (저널논문)
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