Publication:
High triplet energy host materials for blue TADF OLEDs—A tool box approach

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dc.affiliation.dptoUC3M. Departamento de Físicaes
dc.contributor.authorRodella, Francesco
dc.contributor.authorBagnich, Sergey
dc.contributor.authorDuda, Eimantas
dc.contributor.authorMeier, Tobias
dc.contributor.authorKahle, Julian
dc.contributor.authorAthanasopoulos, Stavros
dc.contributor.authorKöhler, Anna
dc.contributor.authorStrohriegl, Peter
dc.contributor.funderEuropean Commissionen
dc.date.accessioned2023-08-04T07:44:28Z
dc.date.available2023-08-04T07:44:28Z
dc.date.issued2020-07
dc.description.abstractThe synthesis of stable blue TADF emitters and the corresponding matrix materials is one of the biggest challenges in the development of novel OLED materials. We present six bipolar host materials based on triazine as an acceptor and two types of donors, namely, carbazole, and acridine. Using a tool box approach, the chemical structure of the materials is changed in a systematic way. Both the carbazole and acridine donor are connected to the triazine acceptor via a para- or a meta-linked phenyl ring or are linked directly to each other. The photophysics of the materials has been investigated in detail by absorption-, fluorescence-, and phosphorescence spectroscopy in solution. In addition, a number of DFT calculations have been made which result in a deeper understanding of the photophysics. The presence of a phenyl bridge between donor and acceptor cores leads to a considerable decrease of the triplet energy due to extension of the overlap electron and hole orbitals over the triazine-phenyl core of the molecule. This decrease is more pronounced for the para-phenylene than for the meta-phenylene linker. Only direct connection of the donor group to the triazine core provides a high energy of the triplet state of 2.97 eV for the carbazole derivative CTRZ and 3.07 eV for the acridine ATRZ. This is a major requirement for the use of the materials as a host for blue TADF emitters.en
dc.description.sponsorshipWe acknowledge funding through the EU Marie Sklodowska-Curie ITN TADFlife grant (GA. 812872). This work was also supported by the Universidad Carlos III de Madrid, the European Union's Seventh Framework Programme for research.en
dc.format.extent16
dc.identifier.bibliographicCitationRodella, F., Bagnich, S., Duda, E., Meier, T., Kahle, J., Athanasopoulos, S., Köhler, A., & Strohriegl, P. (2020). High triplet energy host materials for Blue TADF OLEDs—A tool box approach. Frontiers in Chemistry, 8:657.en
dc.identifier.doihttps://doi.org/10.3389/fchem.2020.00657
dc.identifier.issn2296-2646
dc.identifier.publicationfirstpage1
dc.identifier.publicationissue657
dc.identifier.publicationlastpage16
dc.identifier.publicationtitleFrontiers in Chemistryen
dc.identifier.publicationvolume8
dc.identifier.urihttps://hdl.handle.net/10016/38056
dc.identifier.uxxiAR/0000026776
dc.language.isoengen
dc.publisherFrontiersen
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/812872
dc.rights© 2020 Rodella, Bagnich, Duda, Meier, Kahle, Athanasopoulos, Köhler and Strohriegl.en
dc.rightsAtribución 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subject.ecienciaElectrónicaes
dc.subject.ecienciaFísicaes
dc.subject.ecienciaMaterialeses
dc.subject.ecienciaQuímicaes
dc.subject.otherThermally activated delayed fluorescenceen
dc.subject.otherTADFen
dc.subject.otherHosten
dc.subject.otherOrganic light emitting diodeen
dc.subject.otherTool box approachen
dc.subject.otherHigh triplet energyen
dc.titleHigh triplet energy host materials for blue TADF OLEDs—A tool box approachen
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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