| Author(s): |
Santosh B. Rahane; Ryan M. Hensarling; Bradley J. Sparks; Christopher M. Stafford; Derek L. Patton; |
| Title: |
Synthesis of Multifunctional Polymer Brushes via Sequential and Orthogonal Thiol-Click Reactions |
| Published: |
November 14, 2011 |
| Abstract: |
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 α-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. |
| Citation: |
Journal of Materials Chemistry |
| Volume: |
22 |
| Issue: |
3 |
| Pages: |
pp. 932 - 943 |
| Keywords: |
polymer brushes; surfaces; functionalization; click chemistry; surface modification |
| Research Areas: |
Polymers, Chemistry, Materials Science |
