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Highly efficient blue organic light-emitting diodes based on carbene-metal-amides

Carbene-metal-amides are soluble and thermally stable materials which have recently emerged as emitters in high-performance organic light-emitting diodes. Here we synthesise carbene-metal-amide photoemitters with CF(3)-substituted ligands to show sky-blue to deep-blue photoluminescence from charge-t...

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Autores principales: Conaghan, Patrick J., Matthews, Campbell S. B., Chotard, Florian, Jones, Saul T. E., Greenham, Neil C., Bochmann, Manfred, Credgington, Dan, Romanov, Alexander S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7145843/
https://www.ncbi.nlm.nih.gov/pubmed/32273497
http://dx.doi.org/10.1038/s41467-020-15369-8
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author Conaghan, Patrick J.
Matthews, Campbell S. B.
Chotard, Florian
Jones, Saul T. E.
Greenham, Neil C.
Bochmann, Manfred
Credgington, Dan
Romanov, Alexander S.
author_facet Conaghan, Patrick J.
Matthews, Campbell S. B.
Chotard, Florian
Jones, Saul T. E.
Greenham, Neil C.
Bochmann, Manfred
Credgington, Dan
Romanov, Alexander S.
author_sort Conaghan, Patrick J.
collection PubMed
description Carbene-metal-amides are soluble and thermally stable materials which have recently emerged as emitters in high-performance organic light-emitting diodes. Here we synthesise carbene-metal-amide photoemitters with CF(3)-substituted ligands to show sky-blue to deep-blue photoluminescence from charge-transfer excited states. We demonstrate that the emission colour can be adjusted from blue to yellow and observe that the relative energies of charge transfer and locally excited triplet states influence the performance of the deep-blue emission. High thermal stability and insensitivity to aggregation-induced luminescence quenching allow us to fabricate organic light-emitting diodes in both host-free and host-guest architectures. We report blue devices with a peak external quantum efficiency of 17.3% in a host-free emitting layer and 20.9% in a polar host. Our findings inform the molecular design of the next generation of stable blue carbene-metal-amide emitters.
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spelling pubmed-71458432020-04-13 Highly efficient blue organic light-emitting diodes based on carbene-metal-amides Conaghan, Patrick J. Matthews, Campbell S. B. Chotard, Florian Jones, Saul T. E. Greenham, Neil C. Bochmann, Manfred Credgington, Dan Romanov, Alexander S. Nat Commun Article Carbene-metal-amides are soluble and thermally stable materials which have recently emerged as emitters in high-performance organic light-emitting diodes. Here we synthesise carbene-metal-amide photoemitters with CF(3)-substituted ligands to show sky-blue to deep-blue photoluminescence from charge-transfer excited states. We demonstrate that the emission colour can be adjusted from blue to yellow and observe that the relative energies of charge transfer and locally excited triplet states influence the performance of the deep-blue emission. High thermal stability and insensitivity to aggregation-induced luminescence quenching allow us to fabricate organic light-emitting diodes in both host-free and host-guest architectures. We report blue devices with a peak external quantum efficiency of 17.3% in a host-free emitting layer and 20.9% in a polar host. Our findings inform the molecular design of the next generation of stable blue carbene-metal-amide emitters. Nature Publishing Group UK 2020-04-09 /pmc/articles/PMC7145843/ /pubmed/32273497 http://dx.doi.org/10.1038/s41467-020-15369-8 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Conaghan, Patrick J.
Matthews, Campbell S. B.
Chotard, Florian
Jones, Saul T. E.
Greenham, Neil C.
Bochmann, Manfred
Credgington, Dan
Romanov, Alexander S.
Highly efficient blue organic light-emitting diodes based on carbene-metal-amides
title Highly efficient blue organic light-emitting diodes based on carbene-metal-amides
title_full Highly efficient blue organic light-emitting diodes based on carbene-metal-amides
title_fullStr Highly efficient blue organic light-emitting diodes based on carbene-metal-amides
title_full_unstemmed Highly efficient blue organic light-emitting diodes based on carbene-metal-amides
title_short Highly efficient blue organic light-emitting diodes based on carbene-metal-amides
title_sort highly efficient blue organic light-emitting diodes based on carbene-metal-amides
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7145843/
https://www.ncbi.nlm.nih.gov/pubmed/32273497
http://dx.doi.org/10.1038/s41467-020-15369-8
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