Ion Correlation Effects in Salt-Doped Block Copolymers

Jonathan R. Brown, Youngmi Seo, and Lisa M. Hall
Phys. Rev. Lett. 120, 127801 – Published 22 March 2018
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Abstract

We apply classical density functional theory to study how salt changes the microphase morphology of diblock copolymers. Polymers are freely jointed and one monomer type favorably interacts with ions, to account for the selective solvation that arises from different dielectric constants of the microphases. By including correlations from liquid state theory of an unbound reference fluid, the theory can treat chain behavior, microphase separation, ion correlations, and preferential solvation, at the same coarse-grained level. We show good agreement with molecular dynamics simulations.

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  • Received 5 July 2017
  • Revised 12 December 2017

DOI:https://doi.org/10.1103/PhysRevLett.120.127801

© 2018 American Physical Society

Physics Subject Headings (PhySH)

Polymers & Soft Matter

Authors & Affiliations

Jonathan R. Brown*, Youngmi Seo, and Lisa M. Hall

  • William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 West Woodruff Avenue, Columbus, Ohio 43210, USA

  • *brown.4972@osu.edu
  • hall.1004@osu.edu
  • Current address: LG Chem Research Park, LG Chem, Ltd., 188, Munji-ro, Yuseong-gu, Daejeon, Republic of Korea

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Issue

Vol. 120, Iss. 12 — 23 March 2018

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