期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 22, 期 3, 页码 932-943出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1jm14762e
关键词
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资金
- NSF [DMR-1056817]
- Office of Naval Research [N00014-07-1-1057]
- U.S. Department of Education [P200A090066]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1056817] Funding Source: National Science Foundation
- Div Of Industrial Innovation & Partnersh
- Directorate For Engineering [0917730] Funding Source: National Science Foundation
Fabrication of multifunctional surfaces with complexity approaching that found in nature requires the application of a modular approach to surface engineering. We describe a versatile post-polymerization modification strategy to synthesize multifunctional polymer brush surfaces via combination of surface-initiated photopolymerization (SIP) and orthogonal thiol-click reactions. Specifically, we demonstrate two routes to multifunctional brush surfaces: in the first approach, alkyne-functionalized homopolymer brushes are modified with multiple thiols via a statistical, radical-mediated thiol-yne co-click reaction; and in the second approach, statistical copolymer brushes carrying two distinctly-addressable reactive moieties are sequentially modified via orthogonal base-catalyzed thiol-X (where X represents an isocyanate, epoxy, or alpha-bromoester) and radical-mediated thiol-yne reactions. In both cases, we show that surface properties, in the form of wettability, can be easily tuned over a wide range by judicious choice of brush composition and thiol functionality.
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