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Correlations of nanoscale film morphologies and topological confinement of three-armed cage block copolymers

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Title: Correlations of nanoscale film morphologies and topological confinement of three-armed cage block copolymers
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: cage topology
synchrotron grazing incidence X-ray scattering
nanoscale film morphologies
structural parameters
domain spacing
structural orientation
topological confinement effect
Issue Date: 21-Jun-2021
Publisher: Royal Society of Chemistry
Journal Title: Polymer chemistry
Volume: 12
Issue: 23
Start Page: 3451
End Page: 3460
Publisher DOI: 10.1039/d1py00421b
Abstract: The nanoscale film morphologies of three-armed cage block copolymers showing three different variations (Cage-A, -B, and -C) have been investigated for the first time via synchrotron grazing incidence X-ray scattering. For all cage block copolymers, the individual block components revealed amorphous characteristics. Nevertheless, they all exhibited either cylindrical or lamellar phase-separated nanostructures. Key structural parameters such as domain spacing (d-spacing), structural ordering, and orientation varied depending on the cage topologies. In particular, the d-spacing of nanostructures ranged from 6.50 to 10.85 nm. Compared to their linear block copolymer analogues, the cage block copolymers achieved a 54.8-74.5% d-spacing reduction. Overall, structural parameters such as d-spacing, structural ordering, and orientation were found to be correlated with the topological confinement which originated from the molecular cage topology.
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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