Molecular weight fractionation by confinement of polymer in one-dimensional pillar[5]arene channels

Confinement of polymers in nano-spaces can induce unique molecular dynamics and properties. Here we show molecular weight fractionation by the confinement of single polymer chains of poly(ethylene oxide) (PEO) in the one-dimensional (1D) channels of crystalline pillar[5]arene. Pillar[5]arene crystal...

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Main Authors: Ogoshi, Tomoki, Sueto, Ryuta, Yagyu, Masafumi, Kojima, Ryosuke, Kakuta, Takahiro, Yamagishi, Tada-aki, Doitomi, Kazuki, Tummanapelli, Anil Kumar, Hirao, Hajime, Sakata, Yoko, Akine, Shigehisa, Mizuno, Motohiro
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2019
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Online Access:https://hdl.handle.net/10356/89909
http://hdl.handle.net/10220/47746
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-899092023-02-28T19:36:10Z Molecular weight fractionation by confinement of polymer in one-dimensional pillar[5]arene channels Ogoshi, Tomoki Sueto, Ryuta Yagyu, Masafumi Kojima, Ryosuke Kakuta, Takahiro Yamagishi, Tada-aki Doitomi, Kazuki Tummanapelli, Anil Kumar Hirao, Hajime Sakata, Yoko Akine, Shigehisa Mizuno, Motohiro School of Physical and Mathematical Sciences Polymer Chemistry Self-assembly DRNTU::Science::Chemistry Confinement of polymers in nano-spaces can induce unique molecular dynamics and properties. Here we show molecular weight fractionation by the confinement of single polymer chains of poly(ethylene oxide) (PEO) in the one-dimensional (1D) channels of crystalline pillar[5]arene. Pillar[5]arene crystals are activated by heating under reduced pressure. The activated crystals are immersed in melted PEO, causing the crystals to selectively take up PEO with high mass fraction. The high mass fractionation is caused by the greater number of attractive CH/π interactions between PEO C-H groups and the π-electron-rich 1D channel of the pillar[5]arene with increasing PEO chain length. The molecular motion of the confined PEO (PEO chain thickness of ~3.7 Å) in the 1D channel of pillar[5]arenes (diameter of ~4.7 Å) is highly restricted compared with that of neat PEO. Published version 2019-03-01T07:22:06Z 2019-12-06T17:36:22Z 2019-03-01T07:22:06Z 2019-12-06T17:36:22Z 2019 Journal Article Ogoshi, T., Sueto, R., Yagyu, M., Kojima, R., Kakuta, T., Yamagishi, T. a., . . . Mizuno, M. (2019). Molecular weight fractionation by confinement of polymer in one-dimensional pillar[5]arene channels. Nature Communications, 10(1), 479-. doi:10.1038/s41467-019-08372-1 https://hdl.handle.net/10356/89909 http://hdl.handle.net/10220/47746 10.1038/s41467-019-08372-1 en Nature Communications © 2019 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. 8 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Polymer Chemistry
Self-assembly
DRNTU::Science::Chemistry
spellingShingle Polymer Chemistry
Self-assembly
DRNTU::Science::Chemistry
Ogoshi, Tomoki
Sueto, Ryuta
Yagyu, Masafumi
Kojima, Ryosuke
Kakuta, Takahiro
Yamagishi, Tada-aki
Doitomi, Kazuki
Tummanapelli, Anil Kumar
Hirao, Hajime
Sakata, Yoko
Akine, Shigehisa
Mizuno, Motohiro
Molecular weight fractionation by confinement of polymer in one-dimensional pillar[5]arene channels
description Confinement of polymers in nano-spaces can induce unique molecular dynamics and properties. Here we show molecular weight fractionation by the confinement of single polymer chains of poly(ethylene oxide) (PEO) in the one-dimensional (1D) channels of crystalline pillar[5]arene. Pillar[5]arene crystals are activated by heating under reduced pressure. The activated crystals are immersed in melted PEO, causing the crystals to selectively take up PEO with high mass fraction. The high mass fractionation is caused by the greater number of attractive CH/π interactions between PEO C-H groups and the π-electron-rich 1D channel of the pillar[5]arene with increasing PEO chain length. The molecular motion of the confined PEO (PEO chain thickness of ~3.7 Å) in the 1D channel of pillar[5]arenes (diameter of ~4.7 Å) is highly restricted compared with that of neat PEO.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Ogoshi, Tomoki
Sueto, Ryuta
Yagyu, Masafumi
Kojima, Ryosuke
Kakuta, Takahiro
Yamagishi, Tada-aki
Doitomi, Kazuki
Tummanapelli, Anil Kumar
Hirao, Hajime
Sakata, Yoko
Akine, Shigehisa
Mizuno, Motohiro
format Article
author Ogoshi, Tomoki
Sueto, Ryuta
Yagyu, Masafumi
Kojima, Ryosuke
Kakuta, Takahiro
Yamagishi, Tada-aki
Doitomi, Kazuki
Tummanapelli, Anil Kumar
Hirao, Hajime
Sakata, Yoko
Akine, Shigehisa
Mizuno, Motohiro
author_sort Ogoshi, Tomoki
title Molecular weight fractionation by confinement of polymer in one-dimensional pillar[5]arene channels
title_short Molecular weight fractionation by confinement of polymer in one-dimensional pillar[5]arene channels
title_full Molecular weight fractionation by confinement of polymer in one-dimensional pillar[5]arene channels
title_fullStr Molecular weight fractionation by confinement of polymer in one-dimensional pillar[5]arene channels
title_full_unstemmed Molecular weight fractionation by confinement of polymer in one-dimensional pillar[5]arene channels
title_sort molecular weight fractionation by confinement of polymer in one-dimensional pillar[5]arene channels
publishDate 2019
url https://hdl.handle.net/10356/89909
http://hdl.handle.net/10220/47746
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