A15, σ, and a Quasicrystal: Access to Complex Particle Packings via Bidisperse Diblock Copolymer Blends

Aaron P. Lindsay; Ronald M. Lewis; Bongjoon Lee; Austin J. Peterson; Timothy P. Lodge; Frank S. Bates

doi:10.1021/acsmacrolett.9b01026

A15, σ, and a Quasicrystal: Access to Complex Particle Packings via Bidisperse Diblock Copolymer Blends

Aaron P. Lindsay, Ronald M. Lewis, Bongjoon Lee, Austin J. Peterson, Timothy P. Lodge, Frank S. Bates

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

68 Scopus citations

Abstract

A renewed focus on the phase behavior of nominally single-component, compositionally asymmetric diblock copolymers has revealed a host of previously unanticipated Frank-Kasper (FK) and quasicrystalline phases. However, these periodic and aperiodic particle packings have thus far only been reported in low molecular weight, highly conformationally asymmetric diblock copolymers, leaving researchers with a relatively small library of polymers in which these phases can be studied. In this work, we report on a simple approach to access these morphologies: blending two diblock copolymers with the same corona block length and varied core block lengths. Compositionally symmetric and asymmetric polystyrene-b-1,4-polybutadiene (SB) diblock copolymers with constant corona block lengths were blended together and shown via small-angle X-ray scattering and transmission electron microscopy to order into the FK A15 and σ phases, as well as a dodecagonal quasicrystal, providing a route to various particle packings in high molecular weight diblock copolymer melts.

Original language	English (US)
Pages (from-to)	197-203
Number of pages	7
Journal	ACS Macro Letters
Volume	9
Issue number	2
DOIs	https://doi.org/10.1021/acsmacrolett.9b01026
State	Published - Feb 18 2020

Bibliographical note

Funding Information:
Support for this work was provided by the National Science Foundation under Grant No. DMR-1801993 as well as the National Science Foundation Graduate Research Fellowship under Grant No. 00039202. SAXS experiments were conducted at the Advanced Photon Source (APS), Sector 5 (DuPont-Northwestern-Dow Collaborative Access Team, DND-CAT). DND-CAT is supported by E.I. DuPont de Nemours & Co., The Dow Chemical Company, and Northwestern University. Use of the APS, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science by Argonne National Laboratory, was supported by the U.S. DOE under Contract No. DE-AC02-06CH11357. SAXS data was collected using an instrument funded by the National Science Foundation under Grant No. 0960140. Parts of this work were carried out in the Characterization Facility at the University of Minnesota, which receives partial support from the NSF through the MRSEC program (DMR-1420013).

Publisher Copyright:
© 2020 American Chemical Society.

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abstract = "A renewed focus on the phase behavior of nominally single-component, compositionally asymmetric diblock copolymers has revealed a host of previously unanticipated Frank-Kasper (FK) and quasicrystalline phases. However, these periodic and aperiodic particle packings have thus far only been reported in low molecular weight, highly conformationally asymmetric diblock copolymers, leaving researchers with a relatively small library of polymers in which these phases can be studied. In this work, we report on a simple approach to access these morphologies: blending two diblock copolymers with the same corona block length and varied core block lengths. Compositionally symmetric and asymmetric polystyrene-b-1,4-polybutadiene (SB) diblock copolymers with constant corona block lengths were blended together and shown via small-angle X-ray scattering and transmission electron microscopy to order into the FK A15 and σ phases, as well as a dodecagonal quasicrystal, providing a route to various particle packings in high molecular weight diblock copolymer melts.",

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A15, σ, and a Quasicrystal: Access to Complex Particle Packings via Bidisperse Diblock Copolymer Blends

Abstract

Bibliographical note

How much support was provided by MRSEC?

Reporting period for MRSEC

Access

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MRSEC IRG-3: Hierarchical Multifunctional Macromolecular Materials

University of Minnesota MRSEC (DMR-1420013)

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A15, σ, and a Quasicrystal: Access to Complex Particle Packings via Bidisperse Diblock Copolymer Blends

Abstract

Bibliographical note

How much support was provided by MRSEC?

Reporting period for MRSEC

Access

OpenUrl availability

Other files and links

Fingerprint

Projects

MRSEC IRG-3: Hierarchical Multifunctional Macromolecular Materials

University of Minnesota MRSEC (DMR-1420013)

Cite this