【作者】 张明；

【导师】 杨永刚；

【作者基本信息】 苏州大学 ， 应用化学， 2011， 硕士

【摘要】 本文主要研究了以下三个方面的内容:(1)利用非手性阳离子表面活性剂的超分子自组装体为模板,以非手性的烷基醇为结构助剂在氢氧化钠的碱性条件下制备得到了一系列螺旋介孔二氧化硅纳米结构。烷基醇的加入有利于降低表面活性剂的临界胶束浓度,并且有利于表面裂开状的胶束的形成,同时还会使螺旋介孔二氧化硅纳米结构的表面发生相变。(2)手性小分子结构助剂的手性可以传递到超分子自组装体,并以另一种形式存在,如螺旋结构。本文当中,希望利用非手性阳离子表面活性剂为模板,加入手性小分子作为手性诱导剂,通过控制条件,希望得到具有单一手性的螺旋介孔二氧化硅纳米材料。(3)利用手性的11PyBr或者12PyBr作为模板,在酸性条件下,加入不同的硅源制备得到了亚乙基,亚甲基,亚乙烯基,苯基等有机基团桥键的各种有机-无机杂化二氧化硅纳米结构。更多还原

【Abstract】 We mainly discussed three aspects in this paper:First, phase transition on the surface of helical mesoporous silica nanofibers were prepared using the self-assembly of achiral cationic surfactants as supra molecular templates and achiral alcohol as co-structure-directing agent in the solution of NaOH. Critical micelle concentration of the surfactant can be reduced by the adding of achiral alcohol, and it was beneficial to formate cracking shape on the surface of micelle and phase transition.Second, the molecular chiral information can be transmitted to a supra molecular and showed in another form, such as helical structures. In this paper, we tried to get helical mesoporous silica nanofibers with single chirality by using the self-assembly of achiral cationic surfactants as templates and chiral molecule as chiral inducer.Third, Organic-inorganic hybird helical silicas containing different organic bridging groups (such as ethylidene, methylene, ethenylene, phenylene) were obtained in acid by using 11PyBr or 12PyBr as templates and kinds of silicon source.更多还原