Lamellar Bridged Silsesquioxanes: Self-Assembly through a Combination of Hydrogen Bonding and Hydrophobic Interactions
作者:Joël J. E. Moreau、Luc Vellutini、Michel Wong Chi Man、Catherine Bied、Philippe Dieudonné、Jean-Louis Bantignies、Jean-Louis Sauvajol
DOI:10.1002/chem.200401012
日期:2005.2.18
self-organisation process. The structural features of these nanostructured organic/inorganic hybrids were analysed by several techniques: attenuated Fourier transformed infrared (ATR-FTIR), solid-state NMR spectroscopy (13C and 29Si), scanning and transmission electron microscopy (SEM and TEM) and powder X-ray diffraction (PXRD). The reaction conditions, the hydrophobic properties of the long alkylidene chains
能够自组装的四个双(三烷氧基甲硅烷基化)有机分子的合成-(EtO)3Si(CH2)3NHCONH-(CH2)n-NHCONH(CH2)3Si(OEt)3(n = 9-12)缔合描述了可变长度的脲官能团和亚烷基链。这些化合物起有机胶凝剂的作用,由于脲基团的分子间氢键作用,形成了超分子组装体。在化学计量的水存在下,乙醇中氟化物离子催化的水解会产生无定形杂化物,而在过量水中的酸催化的水解会通过自组织过程形成结晶层状杂化材料。这些纳米结构的有机/无机杂化体的结构特征通过几种技术进行了分析:衰减傅立叶变换红外(ATR-FTIR),固态NMR光谱(13C和29Si),扫描和透射电子显微镜(SEM和TEM)以及粉末X射线衍射(PXRD)。反应条件,长亚烷基链的疏水性质和脲基团的氢键性质是决定这些自组装纳米结构杂化二氧化硅形成的因素。