Synthesis and Characterization of Novel Microporous and Ionomeric Materials

该建议涉及几个合成和表征 新的材料家族。 芳基凝胶是玻璃状物质 含有以规则间隔插入的刚性棒有机间隔物 在类似硅酸盐的网络中。 这些材料可以被认为是 无机硅酸盐和有机网络聚合物的混合物。 他们的 合成是通过水解缩合， 双（三烷氧基甲硅烷基）芳基单体和相关衍生物， 溶胶-凝胶化学 温和的制备条件 再加上有机成分的结构多样性， 积木提供了一个机会，“工程”， 所得材料的形态。 拟议的研究将 研究单体或“积木”之间的关系 结构和所得材料的形态。 这些 材料在许多领域都有潜在的应用 包括光学装置、色谱支持物， 分子筛 在一项相关的研究中， 含有高价硅酸盐作为基本结构单元， 做好准备 这些材料在生物化学中几乎没有已知的类似物。 自然 它们作为具有不寻常的机械性能和 离子传导性能。 该项目得到了材料司的共同支持， 研究和化学部门。

This proposal involves synthesis and characterization of several new families of materials. Aryl gels are glass-like substances containing rigid-rod organic spacers inserted at regular intervals in a silicate-like network. The materials may be considered a hybrid of inorganic silicates and organic network polymers. Their synthesis is achieved by hydrolytic condensation of bis(trialkoxysilyl) aryl monomers and related derivatives using sol-gel chemistry. The mild conditions for their preparation coupled with the structural diversity of the organic component of the building block provides an opportunity for"engineering" the morphology of the resulting material. The proposed research will examine the relationship between monomer or "building block" structure and the morphology of the resulting material. These materials have potential applications in a diversity of areas including optical devices, chromatographic supports, and as molecular sieves. In a related study, new ionomeric materials containing hypervalent siliconates as the basic building block will be prepared. These materials have virtually no known analogues in nature. They hold promise as materials with unusual mechanical and ion conducting properties. This project is supported jointly by the Division of Materials Research, and the Chemistry Division.