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Supramolecular anion recognition in water: synthesis of hydrogen-bonded supramolecular frameworks
The interaction of tetratopic amidinium-containing receptors with terephthalate anions leads to porous framework materials assembled through charge-assisted hydrogen bonds. The frameworks form in good yield within minutes in water at room temperature, but no framework material is obtained if other a...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Royal Society of Chemistry
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5380882/ https://www.ncbi.nlm.nih.gov/pubmed/28451369 http://dx.doi.org/10.1039/c7sc00201g |
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author | Morshedi, Mahbod Thomas, Michael Tarzia, Andrew Doonan, Christian J. White, Nicholas G. |
author_facet | Morshedi, Mahbod Thomas, Michael Tarzia, Andrew Doonan, Christian J. White, Nicholas G. |
author_sort | Morshedi, Mahbod |
collection | PubMed |
description | The interaction of tetratopic amidinium-containing receptors with terephthalate anions leads to porous framework materials assembled through charge-assisted hydrogen bonds. The frameworks form in good yield within minutes in water at room temperature, but no framework material is obtained if other anions (Cl(–), Br(–), NO(3) (–), SO(4) (2–) or isophthalate(2–)) are used in place of terephthalate. Two forms of the framework can be prepared: one with a connected pore network, and a more dense phase with discrete voids. We demonstrate that these are the kinetic and thermodynamic products, respectively. Either framework can be prepared independently and can be converted to the other form in response to stimuli. Furthermore, the frameworks can be controllably disassembled and reassembled in response to acid/base triggers suggesting that this new class of materials may have applications in the selective encapsulation and release of guests. |
format | Online Article Text |
id | pubmed-5380882 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-53808822017-04-27 Supramolecular anion recognition in water: synthesis of hydrogen-bonded supramolecular frameworks Morshedi, Mahbod Thomas, Michael Tarzia, Andrew Doonan, Christian J. White, Nicholas G. Chem Sci Chemistry The interaction of tetratopic amidinium-containing receptors with terephthalate anions leads to porous framework materials assembled through charge-assisted hydrogen bonds. The frameworks form in good yield within minutes in water at room temperature, but no framework material is obtained if other anions (Cl(–), Br(–), NO(3) (–), SO(4) (2–) or isophthalate(2–)) are used in place of terephthalate. Two forms of the framework can be prepared: one with a connected pore network, and a more dense phase with discrete voids. We demonstrate that these are the kinetic and thermodynamic products, respectively. Either framework can be prepared independently and can be converted to the other form in response to stimuli. Furthermore, the frameworks can be controllably disassembled and reassembled in response to acid/base triggers suggesting that this new class of materials may have applications in the selective encapsulation and release of guests. Royal Society of Chemistry 2017-04-01 2017-02-16 /pmc/articles/PMC5380882/ /pubmed/28451369 http://dx.doi.org/10.1039/c7sc00201g Text en This journal is © The Royal Society of Chemistry 2017 https://creativecommons.org/licenses/by-nc/3.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial 3.0 Unported License (http://creativecommons.org/licenses/by-nc/3.0/ (https://creativecommons.org/licenses/by-nc/3.0/) ) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Chemistry Morshedi, Mahbod Thomas, Michael Tarzia, Andrew Doonan, Christian J. White, Nicholas G. Supramolecular anion recognition in water: synthesis of hydrogen-bonded supramolecular frameworks |
title | Supramolecular anion recognition in water: synthesis of hydrogen-bonded supramolecular frameworks
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title_full | Supramolecular anion recognition in water: synthesis of hydrogen-bonded supramolecular frameworks
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title_fullStr | Supramolecular anion recognition in water: synthesis of hydrogen-bonded supramolecular frameworks
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title_full_unstemmed | Supramolecular anion recognition in water: synthesis of hydrogen-bonded supramolecular frameworks
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title_short | Supramolecular anion recognition in water: synthesis of hydrogen-bonded supramolecular frameworks
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title_sort | supramolecular anion recognition in water: synthesis of hydrogen-bonded supramolecular frameworks |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5380882/ https://www.ncbi.nlm.nih.gov/pubmed/28451369 http://dx.doi.org/10.1039/c7sc00201g |
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