Supramolecular exfoliation of layer silicate clay by novel cationic pillar[5]arene intercalants

Abstract Clays are multi-layered inorganic materials that can be used to prepare nanocomposite fillers. Because the multi-layered structure is thermodynamically stable, it is difficult to change a multi-layered material into single layers to improve its dispersity. Previously, clays were modified wi...

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Autores principales:	Takahiro Kakuta, Yudai Baba, Tada-aki Yamagishi, Tomoki Ogoshi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b410d1070da24577ad6d224afdf6eb96
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spelling	oai:doaj.org-article:b410d1070da24577ad6d224afdf6eb962021-12-02T15:45:32ZSupramolecular exfoliation of layer silicate clay by novel cationic pillar[5]arene intercalants10.1038/s41598-021-90122-92045-2322https://doaj.org/article/b410d1070da24577ad6d224afdf6eb962021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90122-9https://doaj.org/toc/2045-2322Abstract Clays are multi-layered inorganic materials that can be used to prepare nanocomposite fillers. Because the multi-layered structure is thermodynamically stable, it is difficult to change a multi-layered material into single layers to improve its dispersity. Previously, clays were modified with dodecylammonium cations to promote complexation with nylon 6, nylon 66, polypropylene, polyethylene, polystyrene, and polycaprolactone to increase the mechanical strength (and/or thermal stability) of the composite material; however, complete exfoliation could not be achieved in these composites. In this study, pillar[5]arenes are synthesized and functionalized with ten cationic substituents as novel intercalants for modifying bentonite clay, which is a multi-layered metal-cation-containing silicate. The pillar[5]arenes exfoliate the clay by forming polyrotaxanes with poly(ethylene glycol) through host–guest interactions.Takahiro KakutaYudai BabaTada-aki YamagishiTomoki OgoshiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Takahiro Kakuta Yudai Baba Tada-aki Yamagishi Tomoki Ogoshi Supramolecular exfoliation of layer silicate clay by novel cationic pillar[5]arene intercalants
description	Abstract Clays are multi-layered inorganic materials that can be used to prepare nanocomposite fillers. Because the multi-layered structure is thermodynamically stable, it is difficult to change a multi-layered material into single layers to improve its dispersity. Previously, clays were modified with dodecylammonium cations to promote complexation with nylon 6, nylon 66, polypropylene, polyethylene, polystyrene, and polycaprolactone to increase the mechanical strength (and/or thermal stability) of the composite material; however, complete exfoliation could not be achieved in these composites. In this study, pillar[5]arenes are synthesized and functionalized with ten cationic substituents as novel intercalants for modifying bentonite clay, which is a multi-layered metal-cation-containing silicate. The pillar[5]arenes exfoliate the clay by forming polyrotaxanes with poly(ethylene glycol) through host–guest interactions.
format	article
author	Takahiro Kakuta Yudai Baba Tada-aki Yamagishi Tomoki Ogoshi
author_facet	Takahiro Kakuta Yudai Baba Tada-aki Yamagishi Tomoki Ogoshi
author_sort	Takahiro Kakuta
title	Supramolecular exfoliation of layer silicate clay by novel cationic pillar[5]arene intercalants
title_short	Supramolecular exfoliation of layer silicate clay by novel cationic pillar[5]arene intercalants
title_full	Supramolecular exfoliation of layer silicate clay by novel cationic pillar[5]arene intercalants
title_fullStr	Supramolecular exfoliation of layer silicate clay by novel cationic pillar[5]arene intercalants
title_full_unstemmed	Supramolecular exfoliation of layer silicate clay by novel cationic pillar[5]arene intercalants
title_sort	supramolecular exfoliation of layer silicate clay by novel cationic pillar[5]arene intercalants
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/b410d1070da24577ad6d224afdf6eb96
work_keys_str_mv	AT takahirokakuta supramolecularexfoliationoflayersilicateclaybynovelcationicpillar5areneintercalants AT yudaibaba supramolecularexfoliationoflayersilicateclaybynovelcationicpillar5areneintercalants AT tadaakiyamagishi supramolecularexfoliationoflayersilicateclaybynovelcationicpillar5areneintercalants AT tomokiogoshi supramolecularexfoliationoflayersilicateclaybynovelcationicpillar5areneintercalants
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Supramolecular exfoliation of layer silicate clay by novel cationic pillar[5]arene intercalants

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