Synthesis and Characterization of Novel Microporous and Ionomeric Materials

本提案涉及几个新材料家族的合成和表征。芳基凝胶是一种类似玻璃的物质，含有硬棒式有机间隔物，以一定的间隔插入到类似硅酸盐的网络中。所述材料可视为无机硅酸盐和有机网状聚合物的杂化物。它们的合成是由双（三烷氧基硅基）芳基单体和相关衍生物用溶胶-凝胶化学水解缩合实现的。它们制备的温和条件加上构建块的有机成分的结构多样性，为“工程”所得到的材料的形态提供了机会。提出的研究将检查单体或“构建块”结构与所得材料的形态之间的关系。这些材料在许多领域都有潜在的应用，包括光学器件、色谱支撑和分子筛。在相关研究中，将制备含有高价硅酸盐作为基本构建块的新型离子单体材料。这些材料在自然界中几乎没有已知的类似物。它们有望成为具有不同寻常的机械和离子导电性能的材料。本项目由材料研究部和化学部联合支持。

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.