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Solvatochromic covalent organic frameworks

Laura Ascherl, Emrys Evans Orcid Logo, Matthias Hennemann, Daniele Di Nuzzo, Alexander G. Hufnagel, Michael Beetz, Richard H. Friend, Timothy Clark, Thomas Bein, Florian Auras

Nature Communications, Volume: 9, Issue: 1

Swansea University Author: Emrys Evans Orcid Logo

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DOI (Published version): 10.1038/s41467-018-06161-w

Abstract

Covalent organic frameworks (COFs) are an emerging class of highly tuneable crystalline, porous materials. Here we report the first COFs that change their electronic structure reversibly depending on the surrounding atmosphere. These COFs can act as solid-state supramolecular solvatochromic sensors...

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Published in: Nature Communications
ISSN: 2041-1723
Published: Springer Science and Business Media LLC 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa57569
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spelling 2021-09-08T15:52:47.3738699 v2 57569 2021-08-10 Solvatochromic covalent organic frameworks 538e217307dac24c9642ef1b03b41485 0000-0002-9092-3938 Emrys Evans Emrys Evans true false 2021-08-10 CHEM Covalent organic frameworks (COFs) are an emerging class of highly tuneable crystalline, porous materials. Here we report the first COFs that change their electronic structure reversibly depending on the surrounding atmosphere. These COFs can act as solid-state supramolecular solvatochromic sensors that show a strong colour change when exposed to humidity or solvent vapours, dependent on vapour concentration and solvent polarity. The excellent accessibility of the pores in vertically oriented films results in ultrafast response times below 200 ms, outperforming commercially available humidity sensors by more than an order of magnitude. Employing a solvatochromic COF film as a vapour-sensitive light filter, we demonstrate a fast humidity sensor with full reversibility and stability over at least 4000 cycles. Considering their immense chemical diversity and modular design, COFs with fine-tuned solvatochromic properties could broaden the range of possible applications for these materials in sensing and optoelectronics. Journal Article Nature Communications 9 1 Springer Science and Business Media LLC 2041-1723 18 9 2018 2018-09-18 10.1038/s41467-018-06161-w COLLEGE NANME Chemistry COLLEGE CODE CHEM Swansea University Other The authors are grateful for funding from the German Science Foundation (DFG; Research Cluster NIM) and the Free State of Bavaria (Research Network SolTech). The research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007-2013)/ ERC Grant Agreement No. 321339. This project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement No 670405). 2021-09-08T15:52:47.3738699 2021-08-10T09:25:12.5301069 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemistry Laura Ascherl 1 Emrys Evans 0000-0002-9092-3938 2 Matthias Hennemann 3 Daniele Di Nuzzo 4 Alexander G. Hufnagel 5 Michael Beetz 6 Richard H. Friend 7 Timothy Clark 8 Thomas Bein 9 Florian Auras 10 57569__20788__65c527c30f2a4582ad1f1d445deb6057.pdf 57569.pdf 2021-09-08T15:51:49.0647383 Output 1612400 application/pdf Version of Record true © The Author(s) 2018. s This article is licensed under a Creative Commons Attribution 4.0 International License true eng http://creativecommons.org/licenses/by/4.0/
title Solvatochromic covalent organic frameworks
spellingShingle Solvatochromic covalent organic frameworks
Emrys Evans
title_short Solvatochromic covalent organic frameworks
title_full Solvatochromic covalent organic frameworks
title_fullStr Solvatochromic covalent organic frameworks
title_full_unstemmed Solvatochromic covalent organic frameworks
title_sort Solvatochromic covalent organic frameworks
author_id_str_mv 538e217307dac24c9642ef1b03b41485
author_id_fullname_str_mv 538e217307dac24c9642ef1b03b41485_***_Emrys Evans
author Emrys Evans
author2 Laura Ascherl
Emrys Evans
Matthias Hennemann
Daniele Di Nuzzo
Alexander G. Hufnagel
Michael Beetz
Richard H. Friend
Timothy Clark
Thomas Bein
Florian Auras
format Journal article
container_title Nature Communications
container_volume 9
container_issue 1
publishDate 2018
institution Swansea University
issn 2041-1723
doi_str_mv 10.1038/s41467-018-06161-w
publisher Springer Science and Business Media LLC
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Chemistry{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemistry
document_store_str 1
active_str 0
description Covalent organic frameworks (COFs) are an emerging class of highly tuneable crystalline, porous materials. Here we report the first COFs that change their electronic structure reversibly depending on the surrounding atmosphere. These COFs can act as solid-state supramolecular solvatochromic sensors that show a strong colour change when exposed to humidity or solvent vapours, dependent on vapour concentration and solvent polarity. The excellent accessibility of the pores in vertically oriented films results in ultrafast response times below 200 ms, outperforming commercially available humidity sensors by more than an order of magnitude. Employing a solvatochromic COF film as a vapour-sensitive light filter, we demonstrate a fast humidity sensor with full reversibility and stability over at least 4000 cycles. Considering their immense chemical diversity and modular design, COFs with fine-tuned solvatochromic properties could broaden the range of possible applications for these materials in sensing and optoelectronics.
published_date 2018-09-18T04:13:25Z
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score 11.013731

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