A Pyrrole-Containing Surfactant as a Tecton for Nanocomposite SiO2 Films

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• 作者：Helena Kaper ; Danielle Franke ; Bernd M. Smarsly ; Charl F. J. Faul
• 刊名：Langmuir
• 出版年：2007
• 出版时间：October 23, 2007
• 年：2007
• 卷：23
• 期：22
• 页码：11273 - 11280
• 全文大小：652K
• 年卷期：v.23,no.22(October 23, 2007)
• ISSN：1520-5827

文摘

A surfactant featuring a polymerizable pyrrole head group (dodecyl-dimethyl-(2-pyrrol-1-yl-ethyl)-ammoniumbromide, DDPABr) was synthesized. The thermotropic behavior of the surfactant was investigated by differentialscanning calorimetry (DSC) and X-ray scattering techniques, with small-angle X-ray scattering (SAXS) analysisrevealing a highly ordered lamellar bilayer structure. After full characterization, DDPABr was used in the preparationof mesostructured SiO₂ nanocomposite thin films via evaporation-induced self-assembly (EISA). Resulting thin SiO₂-DDPABr films were studied by 1D and 2D small-angle X-ray scattering (SAXS) techniques, indicating a lamellarnanocomposite structure. Suitable theoretical SAXS models were applied to fit the experimental 1D SAXS data. Thesurfactant could be chemically polymerized within the lamellar domains.