Stimuli-Responsive Polyelectrolyte Polymer Brushes Prepared via Atom-Transfer Radical Polymerization

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• 作者：Neil Ayres ; Stephen G. Boyes ; William J. Brittain
• 刊名：Langmuir
• 出版年：2007
• 出版时间：January 2, 2007
• 年：2007
• 卷：23
• 期：1
• 页码：182 - 189
• 全文大小：299K
• 年卷期：v.23,no.1(January 2, 2007)
• ISSN：1520-5827

文摘

We present an account of our research into polyelectrolyte polymer brushes that are capable of acting as stimuli-responsive films. We first detail the synthesis of poly(acrylic acid) polymer brushes using ATRP in a "grafting from"strategy. Significantly, we employed a chemical-free deprotection step that should leave the anchoring ester groupsintact. We have demonstrated how these polymer assemblies respond to stimuli such as pH and electrolyte concentration.We have used poly(acrylic acid) polymer brushes for the synthesis of metallic nanoparticles and review this work.We have used XPS, ATR-FTIR, and AFM spectroscopy to show the presence of silver and palladium nanoparticleswithin polymer brushes. Finally, we report the synthesis of AB diblock polyampholyte polymer brushes that representan extension of polyelectrolyte polymer brushes.