Enhancing the Performance and Applications of Sol-Gel Derived Materials via Template Based Strategies

通过基于模板的策略增强溶胶-凝胶衍生材料的性能和应用

• 批准号: 0618220
• 负责人: Maryanne Collinson
• 金额: $ 37万
• 依托单位: Virginia Commonwealth University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-08-01 至 2009-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0618220&HistoricalAwards=false
• 关键词: Enhancing; Performance; Applications; Sol; Gel

Professor Maryanne Collinson of Kansas State University is supported by the Analytical and Surface Chemistry program to investigate templating silicate thin films. The PI has detected specific molecules by first using them as a template in a sol gel on an electrode. The molecule is removed, leaving a negative image of the species. On exposure to a solution of the molecule, the electrochemical responses is enhanced over the response to other similarly shaped species. In the present work, this team is using bacteria as the template species to make a bacteria-specific surface. The bacteria will yield rods and corkscrew shaped pores. In addition to use as biosensors, the cavities also may serve as microreactors and templates to form metal and oxide nanoparticles. In another part of the project, the molecule-templated films are being developed as electrochemical luminescent sensors, for example for glucose. Titanium dioxide is being investigated as a sol gel matrix. The anticipated applications of these materials include new nanostructured materials and chemical sensors. The ability to create microcompartments in materials will be useful as microreactors and micro-reservoirs of chemicals that can be used as needed, for example, in drug delivery. As methods become more sophisticated through fundamental projects such as this, it is possible that we will have hierarchically ordered porous materials for applications such as pharmacy and biosensing. The work connects chemistry, microbiology, materials science and engineering. The majority of the PI's students come from groups that are under-represented in the sciences, so, if this trend continues, the research will help society by increasing diversity in the scientific workforce.

堪萨斯州立大学的Maryanne Collinson教授得到了分析和表面化学项目的支持，以研究硅酸盐薄膜的模板化。PI通过首先将特定分子用作电极上的溶胶凝胶的模板来检测它们。该分子被移除，留下了该物种的负面形象。当暴露在分子的溶液中时，电化学反应比对其他类似形状的物种的反应更强。在目前的工作中，该团队正在使用细菌作为模板物种，以制造细菌特有的表面。细菌会产生杆状和开塞螺丝状的毛孔。除了用作生物传感器外，这些空腔还可以用作微反应器和模板，以形成金属和氧化物纳米颗粒。在该项目的另一部分中，分子模板膜正在被开发为电化学发光传感器，例如葡萄糖。人们正在研究二氧化钛作为溶胶-凝胶基质。这些材料的预期应用包括新型纳米结构材料和化学传感器。在材料中创建微格的能力将被用作微反应器和微化学物质储存库，可在需要时使用，例如，在药物输送中。随着这类基础项目的方法变得更加复杂，我们有可能拥有用于制药和生物传感等应用的分级有序的多孔材料。这项工作将化学、微生物学、材料科学和工程学联系在一起。PI的大多数学生来自科学界代表性不足的群体，因此，如果这种趋势继续下去，这项研究将通过增加科学劳动力的多样性来帮助社会。