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Highly Ordered Nanoscale Film Morphologies of Block Copolymers Governed by Nonlinear Topologies

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Title: Highly Ordered Nanoscale Film Morphologies of Block Copolymers Governed by Nonlinear Topologies
Authors: Ree, Brian J. Browse this author
Satoh, Yusuke Browse this author
Isono, Takuya Browse this author
Satoh, Toshifumi Browse this author →KAKEN DB
Keywords: Nanostructures
Chemical structure
Mathematical methods
Issue Date: 20-Jul-2021
Publisher: American Chemical Society
Journal Title: ACS macro letters
Volume: 10
Issue: 7
Start Page: 811
End Page: 818
Publisher DOI: 10.1021/acsmacrolett.1c00204
Abstract: Among many properties of cyclic block copolymers, the notable domain spacing (d-spacing) reduction offers nonlinear topology as an effective tool for developing block copolymers for nanolithography. However, the current consensus regarding the topology-morphology correlation is ambiguous and in need of more studies. Here we present the morphological investigation on nanoscale films of cyclic and tadpole-shaped poly(n-decyl glycidyl ether-block-2-(2-(2-methoxyethoxy)ethoxy)-ethyl glycidyl ether)s and their linear counterpart via synchrotron grazing-incidence X-ray scattering. All copolymers form phase-separated nanostructures, in which only the nonlinear copolymers form highly ordered and unidirectional nanostructures. Additionally, d-spacings of cyclic and tadpole-shaped block copolymers are 49.3-53.7% and 25.0-32.5% shorter than that of their linear counterpart, respectively, exhibiting greater or comparable d-spacing reductions against the experimentally and theoretically achieved values from the literature. Overall, this study demonstrates that cyclic and tadpole topologies can be utilized in developing materials with miniaturized dimensions, high structural ordering, and unidirectional orientation for various nanotechnology applications.
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Macro Letters, copyright c American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 佐藤 敏文

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