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Nematic suspension of a microporous layered silicate obtained by forceless spontaneous delamination via repulsive osmotic swelling for casting high-barrier all-inorganic films

Exploiting the full potential of layered materials for a broad range of applications requires delamination into functional nanosheets. Delamination via repulsive osmotic swelling is driven by thermodynamics and represents the most gentle route to obtain nematic liquid crystals consisting exclusively...

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Autores principales: Loch, Patrick, Schuchardt, Dominik, Algara-Siller, Gerardo, Markus, Paul, Ottermann, Katharina, Rosenfeldt, Sabine, Lunkenbein, Thomas, Schwieger, Wilhelm, Papastavrou, Georg, Breu, Josef
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for the Advancement of Science 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9116614/
https://www.ncbi.nlm.nih.gov/pubmed/35584219
http://dx.doi.org/10.1126/sciadv.abn9084
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author Loch, Patrick
Schuchardt, Dominik
Algara-Siller, Gerardo
Markus, Paul
Ottermann, Katharina
Rosenfeldt, Sabine
Lunkenbein, Thomas
Schwieger, Wilhelm
Papastavrou, Georg
Breu, Josef
author_facet Loch, Patrick
Schuchardt, Dominik
Algara-Siller, Gerardo
Markus, Paul
Ottermann, Katharina
Rosenfeldt, Sabine
Lunkenbein, Thomas
Schwieger, Wilhelm
Papastavrou, Georg
Breu, Josef
author_sort Loch, Patrick
collection PubMed
description Exploiting the full potential of layered materials for a broad range of applications requires delamination into functional nanosheets. Delamination via repulsive osmotic swelling is driven by thermodynamics and represents the most gentle route to obtain nematic liquid crystals consisting exclusively of single-layer nanosheets. This mechanism was, however, long limited to very few compounds, including 2:1-type clay minerals, layered titanates, or niobates. Despite the great potential of zeolites and their microporous layered counterparts, nanosheet production is challenging and troublesome, and published procedures implied the use of some shearing forces. Here, we present a scalable, eco-friendly, and utter delamination of the microporous layered silicate ilerite into single-layer nanosheets that extends repulsive delamination to the class of layered zeolites. As the sheet diameter is preserved, nematic suspensions with cofacial nanosheets of ≈9000 aspect ratio are obtained that can be cast into oriented films, e.g., for barrier applications.
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spelling pubmed-91166142022-06-01 Nematic suspension of a microporous layered silicate obtained by forceless spontaneous delamination via repulsive osmotic swelling for casting high-barrier all-inorganic films Loch, Patrick Schuchardt, Dominik Algara-Siller, Gerardo Markus, Paul Ottermann, Katharina Rosenfeldt, Sabine Lunkenbein, Thomas Schwieger, Wilhelm Papastavrou, Georg Breu, Josef Sci Adv Physical and Materials Sciences Exploiting the full potential of layered materials for a broad range of applications requires delamination into functional nanosheets. Delamination via repulsive osmotic swelling is driven by thermodynamics and represents the most gentle route to obtain nematic liquid crystals consisting exclusively of single-layer nanosheets. This mechanism was, however, long limited to very few compounds, including 2:1-type clay minerals, layered titanates, or niobates. Despite the great potential of zeolites and their microporous layered counterparts, nanosheet production is challenging and troublesome, and published procedures implied the use of some shearing forces. Here, we present a scalable, eco-friendly, and utter delamination of the microporous layered silicate ilerite into single-layer nanosheets that extends repulsive delamination to the class of layered zeolites. As the sheet diameter is preserved, nematic suspensions with cofacial nanosheets of ≈9000 aspect ratio are obtained that can be cast into oriented films, e.g., for barrier applications. American Association for the Advancement of Science 2022-05-18 /pmc/articles/PMC9116614/ /pubmed/35584219 http://dx.doi.org/10.1126/sciadv.abn9084 Text en Copyright © 2022 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
spellingShingle Physical and Materials Sciences
Loch, Patrick
Schuchardt, Dominik
Algara-Siller, Gerardo
Markus, Paul
Ottermann, Katharina
Rosenfeldt, Sabine
Lunkenbein, Thomas
Schwieger, Wilhelm
Papastavrou, Georg
Breu, Josef
Nematic suspension of a microporous layered silicate obtained by forceless spontaneous delamination via repulsive osmotic swelling for casting high-barrier all-inorganic films
title Nematic suspension of a microporous layered silicate obtained by forceless spontaneous delamination via repulsive osmotic swelling for casting high-barrier all-inorganic films
title_full Nematic suspension of a microporous layered silicate obtained by forceless spontaneous delamination via repulsive osmotic swelling for casting high-barrier all-inorganic films
title_fullStr Nematic suspension of a microporous layered silicate obtained by forceless spontaneous delamination via repulsive osmotic swelling for casting high-barrier all-inorganic films
title_full_unstemmed Nematic suspension of a microporous layered silicate obtained by forceless spontaneous delamination via repulsive osmotic swelling for casting high-barrier all-inorganic films
title_short Nematic suspension of a microporous layered silicate obtained by forceless spontaneous delamination via repulsive osmotic swelling for casting high-barrier all-inorganic films
title_sort nematic suspension of a microporous layered silicate obtained by forceless spontaneous delamination via repulsive osmotic swelling for casting high-barrier all-inorganic films
topic Physical and Materials Sciences
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9116614/
https://www.ncbi.nlm.nih.gov/pubmed/35584219
http://dx.doi.org/10.1126/sciadv.abn9084
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