Cited by 14Block Copolymer Self-AssemblyAdvanced Polymer Synthesis and CharacterizationSurfactants and Colloidal Systems

Structural analysis of bottlebrush block copolymer micelles using small-angle X-ray Scattering

Kim, Seyoung, Cho, Yunshik, Kim, Jee Hyun, Song, Sanghoon, Lim, Jeewoo, Choi, Soo-Hyung, Char, Kookheon·2020·ACS Macro Letters

Abstract

We present structural analysis of spherical diblock copolymer micelles where core blocks have bottlebrush architecture. The dependence of the core radius ( R core ) and the corona thickness ( L corona ) on the core block length ( N core ) is investigated using small-angle X-ray scattering (SAXS) and discussed in terms of the stiffness of a core-forming polymer posed by its long fluoroalkyl side chains. The conformation of the core block is strongly stretched, and the measured exponents α and β from power-law correlations, R core ∼ N core α and L corona ∼ N core β, respectively, are greater than those from any scaling predictions for block copolymer micelles with a flexible, linear core-block. Such deviations are attributed to the appreciable chain stiffness of the bottlebrush core block, and a simple model is suggested to understand how the core block stiffness influences both the dimensions of core and corona.

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Crossref · 10.1021/acsmacrolett.0c00442

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42 of 42 references verified0 citation errors · 0 not checkable

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Authors
Kim, S., Cho, Y., Kim, J. H., Song, S., Lim, J., Choi, S.-H., & Char, K.
Affiliations
  • Seoul National University (KR)
  • Kyung Hee University (KR)
  • Hongik University (KR)
Corresponding author
  • Choi, Soo-Hyung
  • Char, Kookheon
Venue
ACS Macro Letters
Published
2020-08-18
Volume
9
Issue
9
Pages
1261-1266
ISSN
2161-1653 (ISSN-L)
OpenAlex
W3059249628
Cited by
14
References
42
Citations by year
2026: 3 · 2024: 2 · 2023: 1 · 2022: 4 · 2021: 4
FWCI
0.88
Type
journal article
Language
en
Open access
closed
Locations
  • ACS Macro Letters (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Research Foundation of Korea (2010-0018290, 2016R1C1B3010402, 2017M2A2A6A01021244, 2017M3A9E4047246)
Topics
  • Physical Sciences › Materials Science › Materials Chemistry › Block Copolymer Self-Assembly
  • Physical Sciences › Chemistry › Organic Chemistry › Advanced Polymer Synthesis and Characterization
  • Physical Sciences › Chemistry › Organic Chemistry › Surfactants and Colloidal Systems
Keywords
bottlebrush block copolymers, diblock copolymer micelles, core radius, chain stiffness, power-law scaling, micelle structure

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