Buckling Instabilities in Polymer Brush Surfaces via Postpolymerization Modification

Wei Guo; Cassandra M. Reese; Li Xiong; Phillip K. Logan; Brittany J. Thompson; Christopher M. Stafford; Anton V. Ievlev; Bradley S. Lokitz; Olga S. Ovchinnikova; Derek L. Patton

doi:10.1021/acs.macromol.7b01888

Buckling Instabilities in Polymer Brush Surfaces via Postpolymerization Modification

Wei Guo, Cassandra M. Reese, Li Xiong, Phillip K. Logan, Brittany J. Thompson, Christopher M. Stafford, Anton V. Ievlev, Bradley S. Lokitz, Olga S. Ovchinnikova, Derek L. Patton

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

16 Scopus citations

Abstract

We report a simple route to engineer ultrathin polymer brush surfaces with wrinkled morphologies using postpolymerization modification (PPM), where the length scale of the buckled features can be tuned from hundreds of nanometers to one micrometer using PPM reaction time. We show that partial cross-linking of the outer layer of the polymer brush under poor solvent conditions is critical to obtain wrinkled morphologies upon swelling. Characterization of the PPM kinetics and swelling behavior via ellipsometry and the through thickness composition profile via time-of-flight secondary ion mass spectroscopy (ToF-SIMS) provided key insight into parameters influencing the buckling behavior.

Original language	English
Pages (from-to)	8670-8677
Number of pages	8
Journal	Macromolecules
Volume	50
Issue number	21
DOIs	https://doi.org/10.1021/acs.macromol.7b01888
State	Published - Nov 14 2017

Funding

The authors acknowledge partial financial support from the National Science Foundation (NSF DMR-1056817) and the American Chemical Society Petroleum Research Fund (PRF# 55833-ND7). C.M.R. acknowledges support from the NSF Graduate Research Fellowship Program (DGE-1445151) and traineeship support from the NSF NRT program “Interface” (DGE-1449999). ToF-SIMS measurements were conducted at the Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility.

Funders	Funder number
National Science Foundation	1056817, DMR-1056817
American Chemical Society Petroleum Research Fund	PRF# 55833-ND7, DGE-1445151, DGE-1449999

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title = "Buckling Instabilities in Polymer Brush Surfaces via Postpolymerization Modification",

abstract = "We report a simple route to engineer ultrathin polymer brush surfaces with wrinkled morphologies using postpolymerization modification (PPM), where the length scale of the buckled features can be tuned from hundreds of nanometers to one micrometer using PPM reaction time. We show that partial cross-linking of the outer layer of the polymer brush under poor solvent conditions is critical to obtain wrinkled morphologies upon swelling. Characterization of the PPM kinetics and swelling behavior via ellipsometry and the through thickness composition profile via time-of-flight secondary ion mass spectroscopy (ToF-SIMS) provided key insight into parameters influencing the buckling behavior.",

author = "Wei Guo and Reese, {Cassandra M.} and Li Xiong and Logan, {Phillip K.} and Thompson, {Brittany J.} and Stafford, {Christopher M.} and Ievlev, {Anton V.} and Lokitz, {Bradley S.} and Ovchinnikova, {Olga S.} and Patton, {Derek L.}",

note = "Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

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doi = "10.1021/acs.macromol.7b01888",

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AU - Guo, Wei

AU - Reese, Cassandra M.

AU - Xiong, Li

AU - Logan, Phillip K.

AU - Thompson, Brittany J.

AU - Stafford, Christopher M.

AU - Ievlev, Anton V.

AU - Lokitz, Bradley S.

AU - Ovchinnikova, Olga S.

AU - Patton, Derek L.

PY - 2017/11/14

Y1 - 2017/11/14

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AB - We report a simple route to engineer ultrathin polymer brush surfaces with wrinkled morphologies using postpolymerization modification (PPM), where the length scale of the buckled features can be tuned from hundreds of nanometers to one micrometer using PPM reaction time. We show that partial cross-linking of the outer layer of the polymer brush under poor solvent conditions is critical to obtain wrinkled morphologies upon swelling. Characterization of the PPM kinetics and swelling behavior via ellipsometry and the through thickness composition profile via time-of-flight secondary ion mass spectroscopy (ToF-SIMS) provided key insight into parameters influencing the buckling behavior.

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Buckling Instabilities in Polymer Brush Surfaces via Postpolymerization Modification

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