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Tuning Optical Properties by Controlled Aggregation: Electroluminescence Assisted by Thermally‐Activated Delayed Fluorescence from Thin Films of Crystalline Chromophores
Several photophysical properties of chromophores depend crucially on intermolecular interactions. Thermally‐activated delayed fluorescence (TADF) is often influenced by close packing of the chromophore assembly. In this context, the metal‐organic framework (MOF) approach has several advantages: it c...
Autores principales: | , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7839528/ https://www.ncbi.nlm.nih.gov/pubmed/32894609 http://dx.doi.org/10.1002/chem.202003712 |
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author | Haldar, Ritesh Jakoby, Marius Kozlowska, Mariana Rahman Khan, Motiur Chen, Hongye Pramudya, Yohanes Richards, Bryce S. Heinke, Lars Wenzel, Wolfgang Odobel, Fabrice Diring, Stéphane Howard, Ian A. Lemmer, Uli Wöll, Christof |
author_facet | Haldar, Ritesh Jakoby, Marius Kozlowska, Mariana Rahman Khan, Motiur Chen, Hongye Pramudya, Yohanes Richards, Bryce S. Heinke, Lars Wenzel, Wolfgang Odobel, Fabrice Diring, Stéphane Howard, Ian A. Lemmer, Uli Wöll, Christof |
author_sort | Haldar, Ritesh |
collection | PubMed |
description | Several photophysical properties of chromophores depend crucially on intermolecular interactions. Thermally‐activated delayed fluorescence (TADF) is often influenced by close packing of the chromophore assembly. In this context, the metal‐organic framework (MOF) approach has several advantages: it can be used to steer aggregation such that the orientation within aggregated structures can be predicted using rational approaches. We demonstrate this design concept for a DPA‐TPE (diphenylamine‐tetraphenylethylene) chromophore, which is non‐emissive in its solvated state due to vibrational quenching. Turning this DPA‐TPE into a ditopic linker makes it possible to grow oriented MOF thin films exhibiting pronounced green electroluminescence with low onset voltages. Measurements at different temperatures clearly demonstrate the presence of TADF. Finally, this work reports that the layer‐by‐layer process used for MOF thin film deposition allows the integration of the TADF‐DPA‐TPE in a functioning LED device. |
format | Online Article Text |
id | pubmed-7839528 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-78395282021-02-01 Tuning Optical Properties by Controlled Aggregation: Electroluminescence Assisted by Thermally‐Activated Delayed Fluorescence from Thin Films of Crystalline Chromophores Haldar, Ritesh Jakoby, Marius Kozlowska, Mariana Rahman Khan, Motiur Chen, Hongye Pramudya, Yohanes Richards, Bryce S. Heinke, Lars Wenzel, Wolfgang Odobel, Fabrice Diring, Stéphane Howard, Ian A. Lemmer, Uli Wöll, Christof Chemistry Communications Several photophysical properties of chromophores depend crucially on intermolecular interactions. Thermally‐activated delayed fluorescence (TADF) is often influenced by close packing of the chromophore assembly. In this context, the metal‐organic framework (MOF) approach has several advantages: it can be used to steer aggregation such that the orientation within aggregated structures can be predicted using rational approaches. We demonstrate this design concept for a DPA‐TPE (diphenylamine‐tetraphenylethylene) chromophore, which is non‐emissive in its solvated state due to vibrational quenching. Turning this DPA‐TPE into a ditopic linker makes it possible to grow oriented MOF thin films exhibiting pronounced green electroluminescence with low onset voltages. Measurements at different temperatures clearly demonstrate the presence of TADF. Finally, this work reports that the layer‐by‐layer process used for MOF thin film deposition allows the integration of the TADF‐DPA‐TPE in a functioning LED device. John Wiley and Sons Inc. 2020-11-17 2020-12-18 /pmc/articles/PMC7839528/ /pubmed/32894609 http://dx.doi.org/10.1002/chem.202003712 Text en © 2020 The Authors. Published by Wiley-VCH GmbH This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. |
spellingShingle | Communications Haldar, Ritesh Jakoby, Marius Kozlowska, Mariana Rahman Khan, Motiur Chen, Hongye Pramudya, Yohanes Richards, Bryce S. Heinke, Lars Wenzel, Wolfgang Odobel, Fabrice Diring, Stéphane Howard, Ian A. Lemmer, Uli Wöll, Christof Tuning Optical Properties by Controlled Aggregation: Electroluminescence Assisted by Thermally‐Activated Delayed Fluorescence from Thin Films of Crystalline Chromophores |
title | Tuning Optical Properties by Controlled Aggregation: Electroluminescence Assisted by Thermally‐Activated Delayed Fluorescence from Thin Films of Crystalline Chromophores |
title_full | Tuning Optical Properties by Controlled Aggregation: Electroluminescence Assisted by Thermally‐Activated Delayed Fluorescence from Thin Films of Crystalline Chromophores |
title_fullStr | Tuning Optical Properties by Controlled Aggregation: Electroluminescence Assisted by Thermally‐Activated Delayed Fluorescence from Thin Films of Crystalline Chromophores |
title_full_unstemmed | Tuning Optical Properties by Controlled Aggregation: Electroluminescence Assisted by Thermally‐Activated Delayed Fluorescence from Thin Films of Crystalline Chromophores |
title_short | Tuning Optical Properties by Controlled Aggregation: Electroluminescence Assisted by Thermally‐Activated Delayed Fluorescence from Thin Films of Crystalline Chromophores |
title_sort | tuning optical properties by controlled aggregation: electroluminescence assisted by thermally‐activated delayed fluorescence from thin films of crystalline chromophores |
topic | Communications |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7839528/ https://www.ncbi.nlm.nih.gov/pubmed/32894609 http://dx.doi.org/10.1002/chem.202003712 |
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