Designed synthesis of nanostructured siloxane-organic hybrids from amphiphilic silicon-based precursors
Designed synthesis of nanostructured siloxane-organic hybrids from amphiphilic silicon-based precursors
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DOI：
10.1002/tcr.20073
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发表时间：
2006-01-01
期刊：
影响因子：
6.6
通讯作者：
Kuroda, K
中科院分区：
文献类型：
--
作者：
Shimojima, A;Kuroda, K
本文综述了近年来基于两亲性硅基前驱体自组装合成纳米结构双烷-有机杂化物的研究进展。通过对前驱体的分子设计，已经获得了多种有序杂化材料。具有共价连接的疏水有机尾部的烷氧基硅烷和氯硅烷被水解以形成含有硅烷醇基团的两亲性分子，导致形成层状（层状）结构。在四烷氧基硅烷的存在下，通过反应制备了透明且取向的层状杂化物薄膜。此外，具有烷基链和大的低聚硅氧烷头的分子的设计导致形成由圆柱形组件组成的中间相，提供了一个直接的途径有序的多孔二氧化硅。这些混合介观结构的合成，结构特征和形成过程进行了讨论。(C)2006年日本化学杂志论坛和威利期刊公司。
This paper reports on recent progress in the synthesis of nanostructured siloxane-organic hybrids based on the self-assembly of amphiphilic silicon-based precursors. A variety of ordered hybrid materials have been obtained by molecular design of the precursors. Alkoxysilanes and chlorosilanes with covalently attached hydrophobic organic tails are hydrolyzed to form amphiphilic molecules containing silanol groups, leading to the formation of layered (lamellar) structures. Transparent and oriented thin films of lamellar hybrids were prepared by the reaction in the presence of tetraalkoxysilane. In addition, the design of molecules having alkyl chains and large oligosiloxane heads led to the formation of mesophases consisting of cylindrical assemblies, providing a direct pathway to ordered porous silica. The synthesis, structural features, and formation processes of these hybrid mesostructures are discussed. (C) 2006 The Japan Chemical journal Forum and Wiley Periodicals, Inc.