NSF Young Investigator: Solvation and Chemical Dynamics at Immiscible Liquid Interfaces

NSF 青年研究员：不混溶液体界面的溶剂化和化学动力学

• 批准号: 9457700
• 负责人: Nancy Levinger
• 金额: $ 36.96万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-08-01 至 2000-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9457700&HistoricalAwards=false
• 关键词: NSF; Young; Investigator; Solvation; Chemical

Nancy E. Levinger is supported by an NSF Young Investigator Grant from the Theoretical and Computational Chemistry Program to perform experimental studies of polar solvation and chemical reactions at the interface between immiscible liquids. She will use surface second harmonic generation (SSHG) to perform initial studies on coumarin 153, a classic probe of solvation dynamics, at the liquid/liquid interface. SSHG is an ideal technique for studying interfacial chemistry because the signals arise solely from the interface without interference from the bulk medium. Information regarding molecular rotational reorientation and electron transfer reactions at interfaces can be examined by this method. A variety of liquid/liquid interfaces will be probed including the octanol/water interface which is an important model system for drug modeling of membrane solubility. Electron transfer and isomerization reactions will be studied at the liquid/liquid interface in a variety of immiscible liquid solvent systems including real membrane bound biologically important proteins. A wide range of chemistry occurs at interfacial boundaries. Examples range from biological and medicinal interfacial problems, such as chemistry of anesthesia, to industrial scale separations of metal ores across interfaces, to the relatively new investigations into self assembled monolayers and Langmuir-Blodgett films for nanoelectronics and nonlinear optical materials. These problems are based not only on structure and composition of the interface but also on kinetic processes that occur at interfaces. As such, there is considerable interest in chemical dynamics at interfaces. Levinger has developed a tool to directly probe the chemical dynamics occurring at such interfaces, and will apply this technique to a variety of important and technologically relevant problems.

南希·E Levinger得到了来自美国国家科学基金会（NSF）青年研究者资助的支持 理论与计算化学课程 极性溶剂化和化学反应的实验研究 不混溶液体之间的界面。 她将使用表面第二 谐波发生（SSHG）进行初步研究香豆素153， 溶剂化动力学的经典探针，在液体/液体界面。 SSHG是研究界面化学的理想技术，因为 信号仅从接口产生，而不受 散装介质。 关于分子旋转重定向的信息 界面处的电子转移反应可以通过这种方法来检查。 法 将探测各种液体/液体界面，包括 正辛醇/水界面是药物重要模型体系 膜溶解度的建模。 电子转移和异构化 反应将在各种液体/液体界面进行研究， 包括真实的膜结合的不混溶液体溶剂体系 重要的生物蛋白质。 在界面边界处发生广泛的化学反应。 示例 从生物和医学界面问题，如 麻醉化学，用于工业规模的金属矿石分离 跨界面，到相对较新的自我研究， 组装单分子膜和Langmuir-Blodgett膜用于纳米电子学， 非线性光学材料 这些问题不仅基于 结构和组成的界面，而且对动力学过程 发生在接口处。 因此，有相当大的兴趣， 界面化学动力学 Levinger开发了一种工具， 直接探测在这些界面处发生的化学动力学，以及 将把这种技术应用于各种重要的技术领域， 相关问题。