Analytical Spectroscopy Methods for Colloids and Colloid-derived Materials

胶体和胶体衍生材料的分析光谱方法

• 批准号: 0137569
• 负责人: Joel Harris
• 金额: $ 49.1万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-03-01 至 2008-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0137569&HistoricalAwards=false
• 关键词: Analytical; Spectroscopy; Methods; Colloids; Colloid

Professor Joel Harris of the University of Utah is funded by the Analytical and Surface Chemistry Program to study single molecule fluorescence imaging and optical trapping techniques for the study of colloids and colloid-derived materials (e.g. silica). Single molecule fluorescence imaging spectroscopy will be used to determine distributions of dye labels, to count reactive surface sites, and to determine particle volume and areas. Optical trapping will provide long residence times to observe Raman scattering and determine chemical composition of individual particles and kinetics of surface reactions. A wide variety of chemical materials and industrial processes depend on the dispersion of finely divided solid materials in liquids, and probing the chemistry of these particles is a challenge for chemical analysis. The combination of single molecule spectroscopy and optical trapping is being used by others, especially in biological chemistry, but the proposal to use these on colloidal particles is unique.

犹他大学的Joel Harris教授由分析和表面化学计划资助，研究用于胶体和胶体衍生材料(如二氧化硅)研究的单分子荧光成像和光学捕获技术。单分子荧光成像光谱学将用于确定染料标记的分布，计算活性表面位置，以及确定颗粒体积和面积。光学捕获将提供较长的停留时间来观察拉曼散射，并确定单个粒子的化学组成和表面反应动力学。各种化学材料和工业过程都依赖于分散在液体中的精细固体物质，而探索这些颗粒的化学是化学分析的一个挑战。单分子光谱学和光学捕获的结合正在被其他人使用，特别是在生物化学中，但将其用于胶体颗粒的提议是独一无二的。