Strict In-Plane Alignment Control of Block-Copolymer-Templated Mesostructured Silica Films Using an Alignment-Controlling Agent

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• 作者：Wataru Kubo ; Masahiko Takahashi ; Kohei Okamoto ; Shin Kitamura ; Hirokatsu Miyata
• 刊名：Langmuir
• 出版年：2013
• 出版时间：July 2, 2013
• 年：2013
• 卷：29
• 期：26
• 页码：8193-8196
• 全文大小：257K
• 年卷期：v.29,no.26(July 2, 2013)
• ISSN：1520-5827

文摘

An alkoxysilane with an alkyl chain is introduced as an alignment-controlling agent of a block-copolymer-templated mesostructured silica film. Use of the alkylalkoxysilane achieves the alignment of the mesochannels of a triblock-copolymer-templated film by an intermolecular interaction with a rubbing-treated polyimide film. Co-use of an alkoxysilane with a hydroxymethyl group as a hydrophobicity reducing agent improves the alignment close to that of the film prepared using an alkyl surfactant. This concept widens the range of the structural period of aligned mesoporous films and thus widens the useful range of the anisotropic optical properties.