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Supramolecular gels with high strength by tuning of calix[4]arene-derived networks

Supramolecular gels comprised of low-molecular-weight gelators are generally regarded as mechanically weak and unable to support formation of free-standing structures, hence, their practical use with applied loads has been limited. Here, we reveal a technique for in situ generation of high tensile s...

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Autores principales: Lee, Ji Ha, Park, Jaehyeon, Park, Jin-Woo, Ahn, Hyo-Jun, Jaworski, Justyn, Jung, Jong Hwa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Pub. Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4383010/
https://www.ncbi.nlm.nih.gov/pubmed/25799459
http://dx.doi.org/10.1038/ncomms7650
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author Lee, Ji Ha
Park, Jaehyeon
Park, Jin-Woo
Ahn, Hyo-Jun
Jaworski, Justyn
Jung, Jong Hwa
author_facet Lee, Ji Ha
Park, Jaehyeon
Park, Jin-Woo
Ahn, Hyo-Jun
Jaworski, Justyn
Jung, Jong Hwa
author_sort Lee, Ji Ha
collection PubMed
description Supramolecular gels comprised of low-molecular-weight gelators are generally regarded as mechanically weak and unable to support formation of free-standing structures, hence, their practical use with applied loads has been limited. Here, we reveal a technique for in situ generation of high tensile strength supramolecular hydrogels derived from low-molecular-weight gelators. By controlling the concentration of hydrochloric acid during hydrazone formation between calix-[4]arene-based gelator precursors, we tune the mechanical and ductile properties of the resulting gel. Organogels formed without hydrochloric acid exhibit impressive tensile strengths, higher than 40 MPa, which is the strongest among self-assembled gels. Hydrogels, prepared by solvent exchange of organogels in water, show 7,000- to 10,000-fold enhanced mechanical properties because of further hydrazone formation. This method of molding also allows the gels to retain shape after processing, and furthermore, we find organogels when prepared as gel electrolytes for lithium battery applications to have good ionic conductivity.
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spelling pubmed-43830102015-04-07 Supramolecular gels with high strength by tuning of calix[4]arene-derived networks Lee, Ji Ha Park, Jaehyeon Park, Jin-Woo Ahn, Hyo-Jun Jaworski, Justyn Jung, Jong Hwa Nat Commun Article Supramolecular gels comprised of low-molecular-weight gelators are generally regarded as mechanically weak and unable to support formation of free-standing structures, hence, their practical use with applied loads has been limited. Here, we reveal a technique for in situ generation of high tensile strength supramolecular hydrogels derived from low-molecular-weight gelators. By controlling the concentration of hydrochloric acid during hydrazone formation between calix-[4]arene-based gelator precursors, we tune the mechanical and ductile properties of the resulting gel. Organogels formed without hydrochloric acid exhibit impressive tensile strengths, higher than 40 MPa, which is the strongest among self-assembled gels. Hydrogels, prepared by solvent exchange of organogels in water, show 7,000- to 10,000-fold enhanced mechanical properties because of further hydrazone formation. This method of molding also allows the gels to retain shape after processing, and furthermore, we find organogels when prepared as gel electrolytes for lithium battery applications to have good ionic conductivity. Nature Pub. Group 2015-03-23 /pmc/articles/PMC4383010/ /pubmed/25799459 http://dx.doi.org/10.1038/ncomms7650 Text en Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Lee, Ji Ha
Park, Jaehyeon
Park, Jin-Woo
Ahn, Hyo-Jun
Jaworski, Justyn
Jung, Jong Hwa
Supramolecular gels with high strength by tuning of calix[4]arene-derived networks
title Supramolecular gels with high strength by tuning of calix[4]arene-derived networks
title_full Supramolecular gels with high strength by tuning of calix[4]arene-derived networks
title_fullStr Supramolecular gels with high strength by tuning of calix[4]arene-derived networks
title_full_unstemmed Supramolecular gels with high strength by tuning of calix[4]arene-derived networks
title_short Supramolecular gels with high strength by tuning of calix[4]arene-derived networks
title_sort supramolecular gels with high strength by tuning of calix[4]arene-derived networks
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4383010/
https://www.ncbi.nlm.nih.gov/pubmed/25799459
http://dx.doi.org/10.1038/ncomms7650
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