Applications of Lanthanide Luminescence Spectroscopy to Studies of Natural Polyelectrolytes

稀土发光光谱在天然聚电解质研究中的应用

• 批准号: 9109396
• 负责人: Barbara Stout
• 金额: --
• 依托单位: University of Cincinnati Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-07-15 至 1993-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9109396&HistoricalAwards=false
• 关键词: Applications; Lanthanide; Luminescence; Spectroscopy; Studies

Dr. Stout will study the interaction of metal ions with natural polyelectrolytes. With the ultimate aim of characterizing metal ion-humic acid binding, she will initially examine some systems that are less complex. A carboxylate-substituted polysaccharide, alginic acid, will serve as the first model polyectrolyte since, it shares many of the properties of humic acid, but is structurally well-defined. The mode and extent of Eu3+ metal ion binding to alginic acid will be investigated using lanthanide luminescence spectroscopy. As a result of these studies, Dr. Stout will have a better understanding of the potential of lanthanide luminescence spectroscopy for use in subsequent work with humic acids as well as the limitations of the technique. %%% Research Planning Grants enable women who have not had prior independent Federal research support to develop a competitive research project. This project involves the use of ionic probes that luminesce to gain knowledge about the identity and nature of the binding site for metals thus revealing substantial information about the nature of polyelectrolytes such as humic acid. This project may have important consequences in environmental chemistry.

斯托特博士将研究金属离子与天然聚电解质的相互作用。以表征金属离子与腐植酸结合的最终目的，她将首先检查一些不太复杂的系统。一种羧酸取代的多糖，海藻酸，将作为第一个模型聚电解质，因为它具有腐植酸的许多特性，但结构明确。利用镧系发光光谱研究Eu3+金属离子与海藻酸结合的方式和程度。作为这些研究的结果，Stout博士将更好地了解镧系发光光谱在腐植酸后续工作中的潜力，以及该技术的局限性。研究计划补助金使以前没有获得独立联邦研究支持的妇女能够发展具有竞争力的研究项目。该项目涉及使用离子探针来获得有关金属结合位点的身份和性质的知识，从而揭示有关聚电解质（如腐植酸）性质的实质性信息。这个项目可能对环境化学有重要的影响。