Take a sneak peek at the new NIST.gov and let us know what you think!
(Please note: some content may not be complete on the beta site.).
NIST Authors in Bold
|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|
|Pages:||pp. 932 - 943|
|Keywords:||polymer brushes, surfaces, functionalization, click chemistry, surface modification|
|Research Areas:||Polymers, Chemistry, Materials Science|