Photodissociation Dynamics of Transient Species

瞬态物质的光解离动力学

• 批准号: 0209889
• 负责人: Hanna Reisler
• 金额: $ 57.86万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-07-01 至 2006-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0209889&HistoricalAwards=false
• 关键词: Photodissociation; Dynamics; Transient; Species

In this project, funded by the Experimental Physical Chemistry Program of the Chemistry Division, Reisler will undertake a detailed study of binary intermolecular interactions that range from weak covalent to van der Waals couplings. Systems to be studied include weakly bound dimers of free radicals, hydrogen-bonded dimers of ammonia with weak pi-acids, and adducts of strong Lewis acids and bases. Several techniques will be used: pair-correlated velocity and angular distributions of dissociation fragments and IR-UV excitation/detection; recently developed resolution and detection sensitivity schemes will be employed for images of the velocity and angular distributions of dissociation fragment; and REMPI and photoelectron spectroscopies will be applied to study the fragment properties. This project deals with the question of how molecules interact with one another. The results of such interactions depend on the strength of forces between the interaction partners. This research uses several experimental techniques to investigate the reaction dynamics for several select systems that exhibit different strengths of interactions. The research is directed to obtain detailed quantitative information of the behavior of interacting molecules and the results will bring about a better understanding of gas phase chemical reactions. The work will be conducted with students and postdoctoral research associates. An effective outreach program is part of this project.

在这个由化学部实验物理化学计划资助的项目中，Reisler将对从弱共价到货车德瓦尔斯耦合的二元分子间相互作用进行详细研究。 待研究的体系包括自由基的弱结合二聚体、氨与弱π酸的氢键二聚体以及强刘易斯酸和碱的加合物。将使用几种技术：成对相关的速度和角分布的解离碎片和红外-紫外激发/检测;最近开发的分辨率和检测灵敏度计划将用于图像的速度和角分布的解离碎片;和REMPI和光电子能谱将被应用于研究碎片的属性。这个项目涉及分子如何相互作用的问题。 这种相互作用的结果取决于相互作用伙伴之间的力的强度。 本研究使用几种实验技术来研究几个选择的系统，表现出不同的相互作用强度的反应动力学。 该研究旨在获得相互作用分子行为的详细定量信息，其结果将有助于更好地理解气相化学反应。 这项工作将与学生和博士后研究助理进行。 一个有效的推广计划是这个项目的一部分。