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Fabrication of Ultrafine, Highly Ordered Nanostructures Using Carbohydrate-Inorganic Hybrid Block Copolymers

Block copolymers (BCPs) have garnered considerable interest due to their ability to form microphase-separated structures suitable for nanofabrication. For these applications, it is critical to achieve both sufficient etch selectivity and a small domain size. To meet both requirements concurrently, w...

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Autores principales: Nishimura, Taiki, Katsuhara, Satoshi, Lee, Chaehun, Ree, Brian J., Borsali, Redouane, Yamamoto, Takuya, Tajima, Kenji, Satoh, Toshifumi, Isono, Takuya
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9144075/
https://www.ncbi.nlm.nih.gov/pubmed/35630875
http://dx.doi.org/10.3390/nano12101653
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author Nishimura, Taiki
Katsuhara, Satoshi
Lee, Chaehun
Ree, Brian J.
Borsali, Redouane
Yamamoto, Takuya
Tajima, Kenji
Satoh, Toshifumi
Isono, Takuya
author_facet Nishimura, Taiki
Katsuhara, Satoshi
Lee, Chaehun
Ree, Brian J.
Borsali, Redouane
Yamamoto, Takuya
Tajima, Kenji
Satoh, Toshifumi
Isono, Takuya
author_sort Nishimura, Taiki
collection PubMed
description Block copolymers (BCPs) have garnered considerable interest due to their ability to form microphase-separated structures suitable for nanofabrication. For these applications, it is critical to achieve both sufficient etch selectivity and a small domain size. To meet both requirements concurrently, we propose the use of oligosaccharide and oligodimethylsiloxane as hydrophilic and etch-resistant hydrophobic inorganic blocks, respectively, to build up a novel BCP system, i.e., carbohydrate-inorganic hybrid BCP. The carbohydrate-inorganic hybrid BCPs were synthesized via a click reaction between oligodimethylsiloxane with an azido group at each chain end and propargyl-functionalized maltooligosaccharide (consisting of one, two, and three glucose units). In the bulk state, small-angle X-ray scattering revealed that these BCPs microphase separated into gyroid, asymmetric lamellar, and symmetric lamellar structures with domain-spacing ranging from 5.0 to 5.9 nm depending on the volume fraction. Additionally, we investigated microphase-separated structures in the thin film state and discovered that the BCP with the most asymmetric composition formed an ultrafine and highly oriented gyroid structure as well as in the bulk state. After reactive ion etching, the gyroid thin film was transformed into a nanoporous-structured gyroid SiO(2) material, demonstrating the material’s promising potential as nanotemplates.
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spelling pubmed-91440752022-05-29 Fabrication of Ultrafine, Highly Ordered Nanostructures Using Carbohydrate-Inorganic Hybrid Block Copolymers Nishimura, Taiki Katsuhara, Satoshi Lee, Chaehun Ree, Brian J. Borsali, Redouane Yamamoto, Takuya Tajima, Kenji Satoh, Toshifumi Isono, Takuya Nanomaterials (Basel) Article Block copolymers (BCPs) have garnered considerable interest due to their ability to form microphase-separated structures suitable for nanofabrication. For these applications, it is critical to achieve both sufficient etch selectivity and a small domain size. To meet both requirements concurrently, we propose the use of oligosaccharide and oligodimethylsiloxane as hydrophilic and etch-resistant hydrophobic inorganic blocks, respectively, to build up a novel BCP system, i.e., carbohydrate-inorganic hybrid BCP. The carbohydrate-inorganic hybrid BCPs were synthesized via a click reaction between oligodimethylsiloxane with an azido group at each chain end and propargyl-functionalized maltooligosaccharide (consisting of one, two, and three glucose units). In the bulk state, small-angle X-ray scattering revealed that these BCPs microphase separated into gyroid, asymmetric lamellar, and symmetric lamellar structures with domain-spacing ranging from 5.0 to 5.9 nm depending on the volume fraction. Additionally, we investigated microphase-separated structures in the thin film state and discovered that the BCP with the most asymmetric composition formed an ultrafine and highly oriented gyroid structure as well as in the bulk state. After reactive ion etching, the gyroid thin film was transformed into a nanoporous-structured gyroid SiO(2) material, demonstrating the material’s promising potential as nanotemplates. MDPI 2022-05-12 /pmc/articles/PMC9144075/ /pubmed/35630875 http://dx.doi.org/10.3390/nano12101653 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Nishimura, Taiki
Katsuhara, Satoshi
Lee, Chaehun
Ree, Brian J.
Borsali, Redouane
Yamamoto, Takuya
Tajima, Kenji
Satoh, Toshifumi
Isono, Takuya
Fabrication of Ultrafine, Highly Ordered Nanostructures Using Carbohydrate-Inorganic Hybrid Block Copolymers
title Fabrication of Ultrafine, Highly Ordered Nanostructures Using Carbohydrate-Inorganic Hybrid Block Copolymers
title_full Fabrication of Ultrafine, Highly Ordered Nanostructures Using Carbohydrate-Inorganic Hybrid Block Copolymers
title_fullStr Fabrication of Ultrafine, Highly Ordered Nanostructures Using Carbohydrate-Inorganic Hybrid Block Copolymers
title_full_unstemmed Fabrication of Ultrafine, Highly Ordered Nanostructures Using Carbohydrate-Inorganic Hybrid Block Copolymers
title_short Fabrication of Ultrafine, Highly Ordered Nanostructures Using Carbohydrate-Inorganic Hybrid Block Copolymers
title_sort fabrication of ultrafine, highly ordered nanostructures using carbohydrate-inorganic hybrid block copolymers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9144075/
https://www.ncbi.nlm.nih.gov/pubmed/35630875
http://dx.doi.org/10.3390/nano12101653
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