Design of High-Density Helical Polymer Brush on Silica Nanoparticles for the Size Recognition of Fullerene Molecules

Masanao Sato; Tomoki Kato; Hitoshi Shimamoto; Kazutaka Kamitani; Noboru Ohta; Tomoyasu Hirai; Atsushi Takahara

doi:10.1021/acsmacrolett.7b00906

Design of High-Density Helical Polymer Brush on Silica Nanoparticles for the Size Recognition of Fullerene Molecules

Masanao Sato, Tomoki Kato, Hitoshi Shimamoto, Kazutaka Kamitani, Noboru Ohta, Tomoyasu Hirai, Atsushi Takahara

Department of Applied Molecular Chemistry

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

High-density syndiotactic poly(methyl methacrylate) (st-PMMA) brushes form a helical structure and encapsulate fullerene molecules in their helical cavities, leading to a PMMA brush/fullerene inclusion complex. The brushes recognize the size of guest molecules and spontaneously adapt their helical diameter to the guest molecules. Both polymer brush/C₆₀ and polymer brush/C₇₀ inclusion complex on the flat substrate were characterized on the basis of grazing incidence wide-angle X-ray diffraction (GIWAXD) measurements, and it is revealed that the main chains oriented perpendicular to the substrate. Moreover, high-density st-PMMA brushes grafted onto nanoparticles efficiently separate C₇₀ molecules from the mixture of C₆₀ and C₇₀ solution. Even after 5× repeating process, the selectivity for C₇₀ molecules remains at 99%.

Original language	English
Pages (from-to)	148-152
Number of pages	5
Journal	ACS Macro Letters
Volume	7
Issue number	2
DOIs	https://doi.org/10.1021/acsmacrolett.7b00906
Publication status	Published - Feb 20 2018

All Science Journal Classification (ASJC) codes

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/acsmacrolett.7b00906

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title = "Design of High-Density Helical Polymer Brush on Silica Nanoparticles for the Size Recognition of Fullerene Molecules",

abstract = "High-density syndiotactic poly(methyl methacrylate) (st-PMMA) brushes form a helical structure and encapsulate fullerene molecules in their helical cavities, leading to a PMMA brush/fullerene inclusion complex. The brushes recognize the size of guest molecules and spontaneously adapt their helical diameter to the guest molecules. Both polymer brush/C60 and polymer brush/C70 inclusion complex on the flat substrate were characterized on the basis of grazing incidence wide-angle X-ray diffraction (GIWAXD) measurements, and it is revealed that the main chains oriented perpendicular to the substrate. Moreover, high-density st-PMMA brushes grafted onto nanoparticles efficiently separate C70 molecules from the mixture of C60 and C70 solution. Even after 5× repeating process, the selectivity for C70 molecules remains at 99%.",

author = "Masanao Sato and Tomoki Kato and Hitoshi Shimamoto and Kazutaka Kamitani and Noboru Ohta and Tomoyasu Hirai and Atsushi Takahara",

note = "Funding Information: This work was supported by Photon and Quantum Basic Research Coordinated Development Program from the Ministry of Education, Culture, Sports, Science and Technology, Japan. We also acknowledge support from the World Premier International Research Center Initiative (WPI) MEXT, Japan and the Cooperative Research Program of “Network Joint Research Center for Materials and Devices”. Part of this work was supported by the Impulsing Paradigm Change through Disruptive Technologies (ImPACT) Program. The X-ray diffraction measurements were performed at the BL02B2 and BL40B2 beamlines of SPring-8 under proposal numbers 2013B1171, 2014A1228, 2014A1222, and 2014B1286. Publisher Copyright: {\textcopyright} 2018 American Chemical Society.",

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AU - Sato, Masanao

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AU - Kamitani, Kazutaka

AU - Ohta, Noboru

AU - Hirai, Tomoyasu

AU - Takahara, Atsushi

N1 - Funding Information: This work was supported by Photon and Quantum Basic Research Coordinated Development Program from the Ministry of Education, Culture, Sports, Science and Technology, Japan. We also acknowledge support from the World Premier International Research Center Initiative (WPI) MEXT, Japan and the Cooperative Research Program of “Network Joint Research Center for Materials and Devices”. Part of this work was supported by the Impulsing Paradigm Change through Disruptive Technologies (ImPACT) Program. The X-ray diffraction measurements were performed at the BL02B2 and BL40B2 beamlines of SPring-8 under proposal numbers 2013B1171, 2014A1228, 2014A1222, and 2014B1286. Publisher Copyright: © 2018 American Chemical Society.

PY - 2018/2/20

Y1 - 2018/2/20

N2 - High-density syndiotactic poly(methyl methacrylate) (st-PMMA) brushes form a helical structure and encapsulate fullerene molecules in their helical cavities, leading to a PMMA brush/fullerene inclusion complex. The brushes recognize the size of guest molecules and spontaneously adapt their helical diameter to the guest molecules. Both polymer brush/C60 and polymer brush/C70 inclusion complex on the flat substrate were characterized on the basis of grazing incidence wide-angle X-ray diffraction (GIWAXD) measurements, and it is revealed that the main chains oriented perpendicular to the substrate. Moreover, high-density st-PMMA brushes grafted onto nanoparticles efficiently separate C70 molecules from the mixture of C60 and C70 solution. Even after 5× repeating process, the selectivity for C70 molecules remains at 99%.

AB - High-density syndiotactic poly(methyl methacrylate) (st-PMMA) brushes form a helical structure and encapsulate fullerene molecules in their helical cavities, leading to a PMMA brush/fullerene inclusion complex. The brushes recognize the size of guest molecules and spontaneously adapt their helical diameter to the guest molecules. Both polymer brush/C60 and polymer brush/C70 inclusion complex on the flat substrate were characterized on the basis of grazing incidence wide-angle X-ray diffraction (GIWAXD) measurements, and it is revealed that the main chains oriented perpendicular to the substrate. Moreover, high-density st-PMMA brushes grafted onto nanoparticles efficiently separate C70 molecules from the mixture of C60 and C70 solution. Even after 5× repeating process, the selectivity for C70 molecules remains at 99%.

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Design of High-Density Helical Polymer Brush on Silica Nanoparticles for the Size Recognition of Fullerene Molecules

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