Synthesis and aqueous self-assembly of ABCD bottlebrush block copolymers

Eman Ahmed; C. Tyler Womble; Marcus Weck

doi:10.1021/acs.macromol.0c01785

Synthesis and aqueous self-assembly of ABCD bottlebrush block copolymers

Eman Ahmed, C. Tyler Womble, Marcus Weck

Chemistry

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

Abstract

Tetrablock bottlebrush copolymers with three incompatible hydrophobic domains and one hydrophilic domain are prepared by a grafting-through approach using living ring-opening metathesis polymerization from norbornene end-functionalized hydrophilic, lipophilic, fluorophilic, and siliphilic macromonomers. The lipophilic and fluorophilic macromonomers are synthesized by the atom-transfer radical polymerization of styrene and pentafluorostyrene, respectively. The hydrophilic and siliphilic macromonomers are obtained by Steglich esterification of a norbornene-based carboxylic acid with monohydroxy-terminated poly(ethylene glycol) and poly(dimethylsiloxane), respectively. Bottlebrush copolymers are prepared with variations in the block sequence and block ratio and self-assembled in aqueous media. “Hamburger-like,” “worm-like,” and “trefoil-like” morphologies are observed through a cryogenic transmission electron microscope.

Original language	English (US)
Pages (from-to)	9018-9025
Number of pages	8
Journal	Macromolecules
Volume	53
Issue number	20
DOIs	https://doi.org/10.1021/acs.macromol.0c01785
State	Published - Oct 27 2020

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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title = "Synthesis and aqueous self-assembly of ABCD bottlebrush block copolymers",

abstract = "Tetrablock bottlebrush copolymers with three incompatible hydrophobic domains and one hydrophilic domain are prepared by a grafting-through approach using living ring-opening metathesis polymerization from norbornene end-functionalized hydrophilic, lipophilic, fluorophilic, and siliphilic macromonomers. The lipophilic and fluorophilic macromonomers are synthesized by the atom-transfer radical polymerization of styrene and pentafluorostyrene, respectively. The hydrophilic and siliphilic macromonomers are obtained by Steglich esterification of a norbornene-based carboxylic acid with monohydroxy-terminated poly(ethylene glycol) and poly(dimethylsiloxane), respectively. Bottlebrush copolymers are prepared with variations in the block sequence and block ratio and self-assembled in aqueous media. “Hamburger-like,” “worm-like,” and “trefoil-like” morphologies are observed through a cryogenic transmission electron microscope.",

author = "Eman Ahmed and {Tyler Womble}, C. and Marcus Weck",

note = "Funding Information: Funding provided by the U.S. Department of Energy, Office of Basic Energy Sciences, through Catalysis Science Contract DE-FG02-03ER15459, is gratefully acknowledged. The shared facilities at the University of Minnesota MRSEC program through MRFN, DMR-1420013 are acknowledged for carrying out the low-temperature DSC analyses of the samples. We thank Kristen Dancel-Manning from the OCS Microscopy Core at New York University Langone Medical Center for assistance with the Cryo-TEM imaging. We thank Veronica Grebe for writing the MATLAB code that was used to process the GPC data. Publisher Copyright: {\textcopyright} 2020 American Chemical Society.",

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doi = "10.1021/acs.macromol.0c01785",

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AU - Weck, Marcus

N1 - Funding Information: Funding provided by the U.S. Department of Energy, Office of Basic Energy Sciences, through Catalysis Science Contract DE-FG02-03ER15459, is gratefully acknowledged. The shared facilities at the University of Minnesota MRSEC program through MRFN, DMR-1420013 are acknowledged for carrying out the low-temperature DSC analyses of the samples. We thank Kristen Dancel-Manning from the OCS Microscopy Core at New York University Langone Medical Center for assistance with the Cryo-TEM imaging. We thank Veronica Grebe for writing the MATLAB code that was used to process the GPC data. Publisher Copyright: © 2020 American Chemical Society.

PY - 2020/10/27

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N2 - Tetrablock bottlebrush copolymers with three incompatible hydrophobic domains and one hydrophilic domain are prepared by a grafting-through approach using living ring-opening metathesis polymerization from norbornene end-functionalized hydrophilic, lipophilic, fluorophilic, and siliphilic macromonomers. The lipophilic and fluorophilic macromonomers are synthesized by the atom-transfer radical polymerization of styrene and pentafluorostyrene, respectively. The hydrophilic and siliphilic macromonomers are obtained by Steglich esterification of a norbornene-based carboxylic acid with monohydroxy-terminated poly(ethylene glycol) and poly(dimethylsiloxane), respectively. Bottlebrush copolymers are prepared with variations in the block sequence and block ratio and self-assembled in aqueous media. “Hamburger-like,” “worm-like,” and “trefoil-like” morphologies are observed through a cryogenic transmission electron microscope.

AB - Tetrablock bottlebrush copolymers with three incompatible hydrophobic domains and one hydrophilic domain are prepared by a grafting-through approach using living ring-opening metathesis polymerization from norbornene end-functionalized hydrophilic, lipophilic, fluorophilic, and siliphilic macromonomers. The lipophilic and fluorophilic macromonomers are synthesized by the atom-transfer radical polymerization of styrene and pentafluorostyrene, respectively. The hydrophilic and siliphilic macromonomers are obtained by Steglich esterification of a norbornene-based carboxylic acid with monohydroxy-terminated poly(ethylene glycol) and poly(dimethylsiloxane), respectively. Bottlebrush copolymers are prepared with variations in the block sequence and block ratio and self-assembled in aqueous media. “Hamburger-like,” “worm-like,” and “trefoil-like” morphologies are observed through a cryogenic transmission electron microscope.

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Synthesis and aqueous self-assembly of ABCD bottlebrush block copolymers

Abstract

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