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首页> 外文会议>3rd International Mesostructured Materials Symposium Jul 8-11, 2002 Jeju, Korea >Mesostructured silica films with crystalline domains and structural features on multiple length scales
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Mesostructured silica films with crystalline domains and structural features on multiple length scales

机译：具有多个长度尺度的晶域和结构特征的介观二氧化硅膜

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The cooperative self-organization of surfactant molecules with reactive silicate species is a key factor in the synthesis of mesoporous materials. Mesostructured films can be produced by exploiting similar self-assembly phenomena at the surface of a solid substrate in contact with a liquid solution; however, in this approach, the properties of the resulting film are strongly influenced by chemical and physical properties of the solid. Alternately, films can be synthesized at vapor/liquid or liquid/liquid interfaces and then transferred to solid substrates. Confinement of the reaction environment to a fluid/ fluid interface provides an additional level of control over the structural evolution that occurs during the reaction, while avoiding undesired influences from a solid phase. This paper presents two examples of mesostructured silica films synthesized at fluid/liquid interfaces: 1) ultrathin films, produced at a gas/liquid interface, having highly regular stripes on two discrete length scales; 2) relatively thick mesoporous silica/collagen composite films, synthesized at a liquid/liquid interface, that are partially crystalline.
机译：表面活性剂分子与反应性硅酸盐物质的协同自组织是介孔材料合成中的关键因素。介观结构的薄膜可以通过在与液体溶液接触的固体基材表面上利用类似的自组装现象来生产。然而，在这种方法中，所得膜的性能受到固体化学和物理性能的强烈影响。或者，可以在气/液或液/液界面合成膜，然后将其转移到固体基质上。将反应环境限制在流体/流体界面上，可提供对反应期间发生的结构演变的额外控制，同时避免固相的不良影响。本文介绍了在流体/液体界面上合成的介孔结构二氧化硅膜的两个示例：1）在气/液界面上产生的超薄膜，在两个离散的长度尺度上具有高度规则的条纹； 2）在液/液界面合成的相对较厚的中孔二氧化硅/胶原复合膜，其为部分结晶。

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