Structured and Gradient Polymer Brushes from Biphenylthiol Self-Assembled Monolayers by Self-Initiated Photografting and Photopolymerization (SIPGP)
详细信息 查看全文
- 作者：Marin Steenackers ; Alexander Kller ; Svetlana Stoycheva ; Michael Grunze ; Rainer Jordan
- 刊名：Langmuir
- 出版年：2009
- 出版时间：February 17, 2009
- 年：2009
- 卷：25
- 期：4
- 页码：2225-2231
- 全文大小：237K
- 年卷期：v.25,no.4(February 17, 2009)
- ISSN：1520-5827
文摘
The self-initiated photografting and photopolymerization (SIPGP) of styrene, methyl methacrylate, and tert-butyl methacrylate on structured self-assembled monolayers (SAMs) of electron beam cross-linked ω-functionalized biphenylthiols SAMs on gold was investigated. Polymer brushes with defined thickness can be prepared on cross-linked benzyl-, phenyl-, hydroxyl-, and amino-functionalized SAMs, whereas non-cross-linked SAM regions desorb from the surface during the SIPGP process. By the preparation of brush gradients on different functionalized SAMs, it was demonstrated that the resulting polymer brush layer thickness is determined by the locally applied electron beam dosage. Defined micro-nanostructured polymer brush patterns can be prepared down to a size of 50 nm. Finally, it was shown that polymer brushes obtained by the SIPGP process have a branched architecture.