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Sub-stoichiometric 2D covalent organic frameworks from tri- and tetratopic linkers

Covalent organic frameworks (COFs) are typically designed by breaking down the desired network into feasible building blocks - either simple and highly symmetric, or more convoluted and thus less symmetric. The linkers are chosen complementary to each other such that an extended, fully condensed net...

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Autores principales: Banerjee, Tanmay, Haase, Frederik, Trenker, Stefan, Biswal, Bishnu P., Savasci, Gökcen, Duppel, Viola, Moudrakovski, Igor, Ochsenfeld, Christian, Lotsch, Bettina V.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6584614/
https://www.ncbi.nlm.nih.gov/pubmed/31217421
http://dx.doi.org/10.1038/s41467-019-10574-6
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author Banerjee, Tanmay
Haase, Frederik
Trenker, Stefan
Biswal, Bishnu P.
Savasci, Gökcen
Duppel, Viola
Moudrakovski, Igor
Ochsenfeld, Christian
Lotsch, Bettina V.
author_facet Banerjee, Tanmay
Haase, Frederik
Trenker, Stefan
Biswal, Bishnu P.
Savasci, Gökcen
Duppel, Viola
Moudrakovski, Igor
Ochsenfeld, Christian
Lotsch, Bettina V.
author_sort Banerjee, Tanmay
collection PubMed
description Covalent organic frameworks (COFs) are typically designed by breaking down the desired network into feasible building blocks - either simple and highly symmetric, or more convoluted and thus less symmetric. The linkers are chosen complementary to each other such that an extended, fully condensed network structure can form. We show not only an exception, but a design principle that allows breaking free of such design rules. We show that tri- and tetratopic linkers can be combined to form imine-linked [4 + 3] sub-stoichiometric 2D COFs featuring an unexpected bex net topology, and with periodic uncondensed amine functionalities which enhance CO(2) adsorption, can be derivatized in a subsequent reaction, and can also act as organocatalysts. We further extend this class of nets by including a ditopic linker to form [4 + 3 + 2] COFs. The results open up possibilities towards a new class of sub-valent COFs with unique structural, topological and compositional complexities for diverse applications.
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spelling pubmed-65846142019-06-24 Sub-stoichiometric 2D covalent organic frameworks from tri- and tetratopic linkers Banerjee, Tanmay Haase, Frederik Trenker, Stefan Biswal, Bishnu P. Savasci, Gökcen Duppel, Viola Moudrakovski, Igor Ochsenfeld, Christian Lotsch, Bettina V. Nat Commun Article Covalent organic frameworks (COFs) are typically designed by breaking down the desired network into feasible building blocks - either simple and highly symmetric, or more convoluted and thus less symmetric. The linkers are chosen complementary to each other such that an extended, fully condensed network structure can form. We show not only an exception, but a design principle that allows breaking free of such design rules. We show that tri- and tetratopic linkers can be combined to form imine-linked [4 + 3] sub-stoichiometric 2D COFs featuring an unexpected bex net topology, and with periodic uncondensed amine functionalities which enhance CO(2) adsorption, can be derivatized in a subsequent reaction, and can also act as organocatalysts. We further extend this class of nets by including a ditopic linker to form [4 + 3 + 2] COFs. The results open up possibilities towards a new class of sub-valent COFs with unique structural, topological and compositional complexities for diverse applications. Nature Publishing Group UK 2019-06-19 /pmc/articles/PMC6584614/ /pubmed/31217421 http://dx.doi.org/10.1038/s41467-019-10574-6 Text en © The Author(s) 2019 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
Banerjee, Tanmay
Haase, Frederik
Trenker, Stefan
Biswal, Bishnu P.
Savasci, Gökcen
Duppel, Viola
Moudrakovski, Igor
Ochsenfeld, Christian
Lotsch, Bettina V.
Sub-stoichiometric 2D covalent organic frameworks from tri- and tetratopic linkers
title Sub-stoichiometric 2D covalent organic frameworks from tri- and tetratopic linkers
title_full Sub-stoichiometric 2D covalent organic frameworks from tri- and tetratopic linkers
title_fullStr Sub-stoichiometric 2D covalent organic frameworks from tri- and tetratopic linkers
title_full_unstemmed Sub-stoichiometric 2D covalent organic frameworks from tri- and tetratopic linkers
title_short Sub-stoichiometric 2D covalent organic frameworks from tri- and tetratopic linkers
title_sort sub-stoichiometric 2d covalent organic frameworks from tri- and tetratopic linkers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6584614/
https://www.ncbi.nlm.nih.gov/pubmed/31217421
http://dx.doi.org/10.1038/s41467-019-10574-6
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