Synthesis of Silica-Based Nanostructured Hybrid via Supramolecular Chemical Approaches

通过超分子化学方法合成二氧化硅基纳米结构杂化物

• 批准号: 16360334
• 负责人: KURODA Kazuyuki
• 金额: $ 9.02万
• 依托单位: Waseda University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16360334/
• 关键词: Inorganic-organic hybrid; Sol-gel method; Self-assembly; Ordered porous silica; オリゴマー

A variety of ordered hybrid materials have been obtained by self-assembly of designed amphiphilic silicon-based 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. 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. We also reported the synthesis of silica-based hybrids with lamellar and wormhole-like mesostructures using of 1-alkynyltrimethoxysilanes. The hybrids with wormhole-like mesostructures, prepared in the presence of TMOS, were converted into mesoporous silica either by chemical treatment or by calcination. Furthermore, we have demonstrated the formation of novel layered materials from alkoxy-derivatives of bis(trichlorosilanes) having methylene, ethylene, and phenylene bridges. On the other hand, we discovered a new class of cage-like oligomers which were selectively formed by hydrolysis and polycondensation of a methylene-bridged bistrialkoxysilane precursor in the presence of tetramethyl-ammonium hydroxide.

通过设计的两亲性硅基前驱体的自组装，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。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，从而提供了有序多孔二氧化硅的直接途径。我们还报道了使用1-炔基三甲氧基硅烷合成具有层状和虫洞状介观结构的硅基杂化物。在TMOS存在下制备的具有虫洞状介孔结构的杂化物通过化学处理或煅烧转化为介孔二氧化硅。此外，我们已经证明了从具有亚甲基、亚乙基和亚苯基桥的双（三氯硅烷）的烷氧基衍生物形成新型层状材料。另一方面，我们发现了一类新的笼状低聚物，其选择性地通过在四甲基氢氧化铵的存在下水解和缩聚亚甲基桥连的双三烷氧基硅烷前体而形成。

项目成果

Designed synthesis of nanostructured siloxane-organic hybrids from amphiphilic silicon-based precursors

• DOI: 10.1002/tcr.20073
• 发表时间: 2006-01-01
• 期刊: CHEMICAL RECORD
• 影响因子: 6.6
• 作者: Shimojima, A;Kuroda, K
• 通讯作者: Kuroda, K

Surfactant-Free Synthesis of Lamellar and Wormhole-Like Mesostructures using 1-Alkynyltrimethoxysilanes

使用 1-炔基三甲氧基硅烷无表面活性剂合成层状和虫孔状介观结构

• 发表时间: 2006
• 期刊: J. Mater. Chem. 16
• 作者: Y.Fujimoto;A.Shimojima;K.Kuroda
• 通讯作者: K.Kuroda

Sol-Gel Synthesis of a Nanostructured Hybrid Material from an Organosiloxane Oligomer with a Terminal Phenyl Group

由带有末端苯基的有机硅氧烷低聚物溶胶-凝胶合成纳米结构杂化材料

• 发表时间: 2006
• 期刊: J. Ceram. Soc. Jpn. 114
• 作者: A.Shimojima;N.Atsumi;N.Umeda;Y.Fujimoto;K.Kuroda
• 通讯作者: K.Kuroda

Selective formation of siloxane-based hybrid cages with methylene groups in the frameworks

• DOI: 10.1039/b411794h
• 发表时间: 2004-01-01
• 期刊: CHEMICAL COMMUNICATIONS
• 影响因子: 4.9
• 作者: Shimojima, A;Kuroda, K
• 通讯作者: Kuroda, K

Layered assembly of alkoxy-substituted bis(trichlorosilanes) containing various organic bridges via hydrolysis of Si–Cl groups

• DOI: 10.1039/b512482d
• 发表时间: 2005-12
• 期刊: Journal of Materials Chemistry
• 作者: Y. Fujimoto;Masaru Heishi;Atsushi Shimojima;K. Kuroda