Fast and Simple Preparation of Patterned Surfaces with Hydrophilic Polymer Brushes by Micromolding in Capillaries

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• 作者：Benjamin Vonh枚ren ; Marcel Langer ; Doris Abt ; Christopher Barner-Kowollik ; Bart Jan Ravoo
• 刊名：Langmuir
• 出版年：2015
• 出版时间：December 22, 2015
• 年：2015
• 卷：31
• 期：50
• 页码：13625-13631
• 全文大小：443K
• ISSN：1520-5827

文摘

Micropatterns of hydrophilic polymer brushes were prepared by micromolding in capillaries (MIMIC). The polymers are covalently bound to the surfaces by a rapid hetero Diels鈥揂lder reaction, constituting the first example of polymers grafted to surfaces in a defined pattern by MIMIC. The polymers [poly(acrylic acid), poly(hydroxyethyl acrylate), and poly(tetraethylene glycol acrylate) ranging in molecular weight from 1500 to 6000 g mol^鈥?] were prepared with narrow dispersities via the reversible addition鈥揻ragmentation chain transfer (RAFT) process using a highly electron deficient RAFT agent that can react with surface-anchored dienes such as cyclopentadiene. We demonstrate that the anchoring method is facile to perform and highly suitable for preparing patterned surfaces that are passivated against biological impact in well-defined areas.