Laser Studies of Equilibrium and Time Dependent Processes at Liquid Interfaces

液体界面平衡和时间相关过程的激光研究

• 批准号: 9612685
• 负责人: Kenneth Eisenthal
• 金额: $ 67.89万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-12-01 至 1999-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9612685&HistoricalAwards=false
• 关键词: Laser; Studies; Equilibrium; Time; Dependent

Kenneth Eisenthal of Columbia University is supported by the Experimental Physical Chemistry Program to continue his studies on chemical reaction dynamics and chemical equilibria at liquid interfaces. He will further develop and refine methods that will extend the ways in which interfaces can be investigated. The major focus of his research will be the use of second harmonic generation (SHG) and infrared plus visible (or ultraviolet) sum frequency generation (SFG) to investigate acid-base reactions/dynamics at air/water, oil/water, and solid/water interfaces. This research includes studies of ground electronic state acid-base equilibria and the photochemistry and photophysics of intermolecular proton transfer and excited electronic state acid-base equilibria. The significance of the proposed research derives from the inhomogeneous nature of the physical and biological world and thus the prevalence of interfaces separating the various phases and structures of matter. For this reason it is important to develop an understanding of interfaces at the microscopic level. There is also a significance that extends beyond fundamental science because of the major role interfaces play in technology (etching of computer chips, liquid phase catalysis and transfer), in the environment (air/water, soil/water, air/atmospheric aerosols, and air/stratospheric acidic ice surfaces), and in medicine (drug delivery in pharmacology, anesthesia and general membrane chemistry and photochemistry).

哥伦比亚大学的肯尼思·艾森塔尔 (Kenneth Eisenthal) 在实验物理化学项目的支持下继续进行化学反应动力学和液体界面化学平衡的研究。 他将进一步开发和完善方法，扩展界面研究的方式。 他的研究重点是利用二次谐波发生（SHG）和红外加可见光（或紫外线）和频发生（SFG）来研究空气/水、油/水和固体/水界面的酸碱反应/动力学。 本研究包括基态电子态酸碱平衡以及分子间质子转移和激发电子态酸碱平衡的光化学和光物理研究。 这项研究的意义源于物理和生物世界的不均匀性，以及因此分隔物质不同相和结构的界面的普遍存在。 因此，在微观层面上理解界面非常重要。 由于界面在技术（计算机芯片蚀刻、液相催化和转移）、环境（空气/水、土壤/水、空气/大气气溶胶和空气/平流层酸性冰表面）和医学（药理学、麻醉和一般膜化学和光化学中的药物输送）中发挥着重要作用，因此它的重要性超出了基础科学。